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 0x8f8d6da13e2d4c2d2c17e4a34352e70733e086ea360e197458d37594c0fdbda7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0e62571-1d50-46b0-ae0e-8f629259d80c.json and https://artists.proofprofile.net/proofs/artist/c0e62571-1d50-46b0-ae0e-8f629259d80c.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 0xef2c27a8924e91723782b3f364a0ffe3301b9386bc8f4aabd76f60f0d65f78c3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/VNA0M1847548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2c27a8924e91723782b3f364a0ffe3301b9386bc8f4aabd76f60f0d65f78c3. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/VNA0M1847548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa2f985e05a945e7234422067530adb350db2a64b07825db9b4c87d938652b5. Chain 2 (Bitcoin): anchored in block 957561 (2026-07-11T11:41:29Z), 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/FR2X42086278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4276681ceb60815a12b4234feb75686be15169dde5f0fb7c04e4564ffa1802. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:13Z), 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/FR2X42086281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2446d88a19535f25cf747902195bf3f8f903eebb659b0e6a5095d488710fa30d. 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/FR2X42086283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65dfdfbccb9f18330ae0d8938a5af363be48ce8f92f3809e0d472b4f1171f16. 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/VNA1M2000648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06cb7bba69e1640c202ae160400a30a07edf05c331a0c9d5c872de709ff7040. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/VNA0M1816748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09268ac08d65dc1e0eba3e2c57c9ad6ada5e634d92676a0d89458e3ee62a85e5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:41:49Z), 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/FR2X42086299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b08ab031dc24edfdc5552602d99f088b7f52d8c1521e9ca74a512d5f94e44ee. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FR2X42086300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb773c46e712b42069b1004e26be85aea71cfae1ff01e98ba8b259bc51b26ea. 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/FR2X42086301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b97a118093c63f65fa5d8ec034b0e15b73fd6fc2d70915c835158dfbfef72c6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR2X42086303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c38c950b2ca35d613dd871acc53b802de648c9314789732a2f0e320fe8b54fd. 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/VNA0M1847546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ab7ee159f0fc543348015fd9fa085ef6db0c3f8d742637ef3eec534d03668a. 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/VNA0M1847547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964bfd0695bab2b9a083491fcb648bac2d042b48f7499df10edd614d5804751e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:11:09Z), 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/VNA0M1847530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4adc377630e88e876de069bfb8e2df4fabc4a02c4b96866cc36826e8ca18f9. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/FR2X42086292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49156872c869edadfd0709532f1132def2c5cb67576b6fbcb46f0bbe68923e2. 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/FR2X42086294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdeaac794ddcb731c2b655413ad6fc95c816a77baab93cb4da36837c4cd9ddf9. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/FR2X42086295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc273824cd4f518e980f666fa886a1aeaea493f1f9490abaf2c6ae870bd4827. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:55:10Z), 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/FR2X42086296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0673597200a3b55c962324b8866e32c2474894dbdc94e30944057ab6369af1f6. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/FR2X42086297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b501204e90c8c838824f5f8402eaed8f096662bd370989c9303b9c1b247bd9. 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/FR2X42086298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396a9779a641c890bb19224593b486bbc1b179d95263540cecac7d036c5945fd. 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/VNA1M2000696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ed2d85a64ae7757862d43676a60a208129ab0c979dcb8968732345ff1a825f. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/VNA1M2103453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b28bf0deeb013ec9e8104c6ad8037885ca389cef116b04f2213a2583e25d9e9. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/VNA1M2103586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d754d8fd01e2c0622991de9f27864619bc75ef1b8da0a0d637db0bfe24035fb. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/VNA1M2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde78241b034a72d75e103de2748d5b48159b45b69f956f03afc6aa5b39b0e8c7. 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/VNA1M2201021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a143b24caa23d5d2b3c36d00f015a81771dc93d7a0a4b8f75dda633efa6e26. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/VNA1M2404636.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c19967dbe29304f43cb0d65b532b667fa2d0ca5f63c3073708279db17a857c. 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/VNA1M2404638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c8a87d9b593ee9b7ed94b165bb82e0ac7cf3b388e31645f69dee833ada1c1b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/VNA1M2107190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a164b4ee6ac6d4677c4acd6ae1a61a59b67de4a12204db1dcaa1a79781e86e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SGUM72000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d754d8fd01e2c0622991de9f27864619bc75ef1b8da0a0d637db0bfe24035fb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/VNA1M2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45b11dc9b5da719bdc3ed88b232c72aafedcb98c9acd49bff527ca96a44128e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4DW1881340.