1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed2ac6bf2001bdf4b95012ed690a7d9732a0eecd478429dfbc733d4ce6675a3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1ccfb7d-5826-409b-b836-98c78e5d79b9.json and https://artists.proofprofile.net/proofs/artist/a1ccfb7d-5826-409b-b836-98c78e5d79b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82cc9a29a53be78f9c24e9d9cb6c1b5b12e3ca56171bfb7a6fac374b0170999. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2049047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cf4b77e1d9f6af40ea43529d571c427b72a8a7a782d629828ed5d32763184a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71352947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f92bdcbde43fd9fe2b0df2884df55e13017455ac8d3c91319a3aed84f9a045. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71352951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d08d191ea49fdff1ea43ea763006f5d30ea06eaf4dff71b27f5c682aa35c9a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71352952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2746a37402f12322cfc19262116f97e907f9c9067de6c60a9c3169300d95e69f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71352953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc576efd1de5172676b2e01e72f84f67a27bafb025c86036e7f12bbb2afceafb0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71352955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b9ba9a5e59b76f053517a1ae7554509b5feb77b22db15f0d3dabfa485e2154. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71352974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dbe8eb8d0e263ed122c64294ad97e4c5793b481eb5f14a81742355a39d105a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71353050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744fd89dcac82419e16ad80b69b5e48ae49e10d17f26462ab7b1bc93123d9c3e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71353054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f4117bbb9d41454861409ba1fa5c4eeb291a370baebc178966f0fe632ae3e2. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71353056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7272cd7504ac399393942dd2919e42d362fb43226e48a63a49a853cfb52968ad. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71353060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d3ad7370e9e2894d52d2deb129cf9825e93f20213fb829b5fdd1dcd4e1e72d. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA71353061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a8c4f3aeedf34c6f84d6c25a1d6f6f5ce47a4e3c6dc1cf335fbb5e15b95c2f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c2f58517e9e365995e75a267a686af56398e5176342b042ca49810faf6eaea. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6256a1a38e4bbb8eeafce5cde329f5002eeff743fbc60702dbd38d59f6cfdaa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710789.
Poppurri: Prenda Del Alma/La Cosecha/Las Copetonas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc86e9fec7513c463214532b92290435f7287b38148837b7a5a2f5218e3a33b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10598337ae3c1c23d02614ddf01399e44dfb1c75961fc2489f36c75f668502d5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200e555c6d68967c92465fe6d42e1b917a2220d2a8452dfc6c203e05d910df77. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ac52bf13a147e49b6f7fec452391d8ff43e20e1b864cd6a3be17e2d549cc96. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e1deb1d4c5a2ac785350b8595fe024624ca890ca1cda8cb954f9612f268693. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b3d55e32a8526b4b9aa94a00facffe45f0611ab1c7fc2c9f9b3e37e8228318. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95a05e50453c48d2f0a0edad5ee4ff34e457ac4ba8945728d827b1bea133a59. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21e3cc8592d8ef760580f7308e33d487faf8f097ebabca1f9c6ba3d24ea9eab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7b2c264cd75d7cbe07afe29a79250cf8a18b71747febe024bc93490f6a765e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acdfa65402a14d4fc4701104a169bbf4fa84aed685a420b0ffa84ff60018f40. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:24:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41da1cd0aa43b1f7edf9604801b06e13be0cf71bd7b3e609a648c5ba24d603b9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b881a5a3fee29d847ed16f7e273a9985c5e4d36d753f03d0c18c28819a1ccb. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00111c2487529e0903f14cfa2b00ccb7d336b14c1f4f9ed5b490c6613758ce10. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde485cbb679492e8eba3c7eed16c111c8f451d12b75758cae8c2c7557cb2d3a6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1503883.
Popurrí/Una Carta/Cielo Azul/Los Patines
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3c813f50e49b5dd174bbe24b19ab399a6413a9fedcaaf47e452c74cf952c2f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de0c56e3bc2bd8f3a49ca209fbc9dadaa2561be7dfdca3d0a327b772eab78d9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:52:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a970511ee2fd240369081db99958ac83347ac01e5ae9cd5508050b358a3952. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbdf74b5fe7f443c7671c697fb815436e8a369ef424cf0f65f3142c6c6f74a2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2519cddd1e701ea490aed43ee152276f2510bc0ce6df909284412d4fae0877. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23063768bf5cb81b3b9a16855395b0f21b4d23c7ba676ac64f9a7572295bf26d. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:28:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dea62aa7f92417cd0d96a3e732fec83421751b711d6792916da326682a17ef2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1010269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0590bb14b41fcf8f03887b8a5ac34576eef6bbf5a9df0f06cb10ac01f133a25. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:09:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1010271.
Los Garcia Bros. Coleccion de Oro Tejano: Sabes Amor, Dos Carnales, El Pachuco, A Puro Dolor, Popurri Ranchero, Lobo Herido, Y Mas Exitos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebaba6cebf8544f87afff6860345e687a7f8c73e8e93d1872b339b6be0d8174. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:25:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaae9f278363af0e8a43bcc8fd015e995e9949b880e08d533888963d129acfd2. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:55:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2be3f0a9b50e0763df5f5a71ace7ad393809b96d30008e9c8de14f37d04cbf. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a970511ee2fd240369081db99958ac83347ac01e5ae9cd5508050b358a3952. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6536ccbfaf7c8d6695219bf8615a2c76c844a3c40df3fbafdfb2021dbb70bb7d. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95a05e50453c48d2f0a0edad5ee4ff34e457ac4ba8945728d827b1bea133a59. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4259163dbd78fede770caf08ab97d4da810649f006532d7fae34ebd8604b29. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58fa3bbda1f0499a810d052d7336a5a224f2523198d4db27f51d8f8980e6829. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21e3cc8592d8ef760580f7308e33d487faf8f097ebabca1f9c6ba3d24ea9eab. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe877e9bc72acc8fe4da30b3dfbe4972845c0d9ea8558e9d4175ea14db2999a5d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36220ed98029792d5816aa827faef37f0b64c88afc21e119266bfd403120956. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acdfa65402a14d4fc4701104a169bbf4fa84aed685a420b0ffa84ff60018f40. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025cdcc3e4021e406c789e12282ec303a8af68eacdb1ae1f0da1f9079c2ac218. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c3fd8f7438cc44fd949d03847455b2659cadd2e98fb75f5fe15865633118c4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fb65876db30dda88f9f7c356066d305a1f167b34cbfaba89219866cc1e6b1b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1010267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fb11bf4a99c541a52032b96688c9c49b405b088fae8e6333449e64cafea62a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab9387e962dee85726e996cbf62529b62936dbd7521234d5b4ef22ddeba83a2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0710761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245ad843af7ce408a6ec3768f51482ac64a79de1174299baaa8f6533daf3bba7. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae3197dcf3c8edaacac1dc7ef9ac24f217e40b422b9eebf5751941335e94322. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMXB2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c82dd7047df7ee428bcd8342431f2e88ca9c7da5069ff2ecff7ff2f090e00c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMXB2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b0f3258c829d617c461939eb7ec19e688f711383f5788b50ef2ea01747e699. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6822210446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc04861c7d4cf47f932e55b39e2d82fd2698749da3c334d95a6392f1bd835d1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MX2971601237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77edad06f3149e2d7a9fd0930821d537d610a5da1ca8d0eaaa9b5be6ac41e8f6. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MX2972001989.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch