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 0x22035f366f0a4442e95773230cdfcedd3915e4af60eb78940c29d14858ba9239. 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/0f2cb8a0-0e9c-4578-b4cb-9dfe661c12a4.json and https://artists.proofprofile.net/proofs/artist/0f2cb8a0-0e9c-4578-b4cb-9dfe661c12a4.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 0x16e9a2b05f063c8ed34c6a7f2b15192fc0c6ce10d50665a3df9d0c30f1260533. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZHN72561109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3e0e845877a5a029f1b154e8662a811ef6eb06e7c1f6bd0afb74236602e7ec. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZHN72561110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5991d83114642355f1addfa3ad4b1d396eaddd7537c14d5fdde14e2479abba1e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:31:26Z), 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/QZHN72561114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ab4c4647c5d6b92f78ed3aac889814decdcf722f389607e781a581105177c7. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZHN72561124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38267a165b47f57dd2bfb80987d6ac4a3f08bb4d0d3df7ca36d6e4713a63a8fb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZHN72561112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbad6a369fa0e6b6df97c4cb477aa067697e4c27ae86cb03ff264bd577b2e5f6. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZHN82596026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1afab99bf796b50da6e28040f338cb9f924e63ce5718c80ebb56b5ae5efa67b. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZHN82596016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f04594f24d8b92e758be8c2fbfc0d1f0db1d7df952edb2090f087b397d8e6d. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:44:24Z), 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/QZHN82596023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59496aca1fe461c120366b55e2e1dde9da81ebc62f9578e37fe8ed571f812c8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:47Z), 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/QZHN82593394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f8a6d23459e75061d32e5635bd5ec8b98080ba4cebb290672eb5b16d8cb086. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNA2558048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039858959f782a8b93541b860170a93dacf90b510147ec16e749993d2763f280. 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/QZHNA2556541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e6904650e42d5aefa8f0b78191546541ddb2cfe0d7b437138babf212968bde. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHNA2558043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11c073197c310a529e3a8bb46e939d88764a9390edf62fe2953557288117b2e. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZHNA2556611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ad270a8f81cc63b64f00d7778463c0113bdf4b2922ccfd0be9ef6b283c2017. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:33:38Z), 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/QZHNA2558041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab949ac9bbe41ee8743745ae16a9e710b0761c4322a469ad9307c7e23a7ab024. 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/QZHNB2567909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56652af8956ce2c801a2dc607d8d2281d9e670a1ba04fd6dc61c5571bafc7a5b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNB2584304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f1dffb64a3b4050c9b9973b365d6cd897bdf4b3cd7c4d18f2be4b4796cf981. 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/QZHNB2567916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fd2ac4cc69b64e4ea77214cf33ff712d12ac0185834ff86d72ff5aca2b295f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHNB2566294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f52c755b4dea769277f05b1d3db1ca6987d8424d3a920beaf6abb09ca9aca7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:15Z), 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/QZHNB2567896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbad7c7a945b7c92b1cc54e486442b4b20e6784ab9d9916aced4388a5983b067. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHNC2586600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4137b333299d51387c7261f2b5a313158ec3bca3c27d3d56139174215aeaf8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:16:11Z), 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/QZHNC2588438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8e75bff08d1570925761165a02d536ac4a42929a722998defa0527531c4ae4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZHNC2586555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582812f65d5034785b184e120daec994280bf1e37e9b1007499818578e1f8a98. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:00:21Z), 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/QZHNC2588455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0811784d07eaf86222f517228f060f523a83ae6a8680aa2e44e29e6eff7d7ef. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHNC2588457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dbf1c9169b4ea80d4f2e61cd48c680b597b38ffe7334fd735cdf235cac8a22. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6Q2558361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9fd428960c61d1cc4c3fc858ba37f6c918fa33b82c8de3115c8f0b9d60f17e. 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/QZK6Q2558359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0449e5c1332d0ab2ac856d5c521593b8ef1656fb200461465ca12b9ce69918b3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6Q2556212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4315aa0c639ae0b36110f18b1ff65a6bd3c466edec2d42fa12c5ad5c4b161533. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6Q2558363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf033876ad65b89f6be1901395c27b0829449e10523559bc7ccc86c4283a34cf. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZK6Q2556464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382bc5c4a79c024c71504eef517037e7edd639a0cd08a54a4c992a7cf741e068. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZK6N2521396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c34a1b0a2918de04460e0c5d3a752ee202854088b76c214cb60550c71a95d6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:27:49Z), 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/QZK6N2519586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a2fa9eacaab9e1808c04f7a4bdd83d0d68629c446e67fc49d590e957f9bd2e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZK6N2521398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d5b4f54c48b9f94e4ef52f81624c9cc77fe0e701cc66b5b9c55b36bbb86dfd. 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/QZK6N2521414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60240e6bd5d6a5b1e2da4af0319df91e29dc35a8dd9f0e0aea087382dbef3b80. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZK6M2543413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f0c68cfb76a0025979d86df7680b88c71dce5debb4babb51741be6a32dfc6a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZK6M2543409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239a3eb1327e92e80b2fd9ac92295fc5969819156bad723cac01c67af0e2fa7b. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZK6M2543411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f3ff188837b724976bf29b47a94a15174d7d80a89dc8272aa671473d79698f. 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/QZK6M2543410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6781d0cc804e0a8e5de37396ebd9bd28dc56dca57736be3a48e11d2b1166d0. 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/QZK6M2542257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cf306ac2bc3f6e496c46f9d7a3c55d0e49adcfbcf617afcd9a839e4fc5506f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:36:16Z), 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/QZK6L2517629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a7dd386733a3500826ea40ea9a840847f27bff086461da2e2b49a4b3a29a01. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:48Z), 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/QZK6L2517640.