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 0xb3be8b450d0b3e082626a5507fdae504c871a42cc60991bd488512a1f73bf522. 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/988363e7-bfd4-4acf-b42f-1efcd655bebb.json and https://artists.proofprofile.net/proofs/artist/988363e7-bfd4-4acf-b42f-1efcd655bebb.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 0x4eba744bf4905b2066b56392596df25d4ae38de02513641b7dcd4b8d56b7aef0. 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/USDHM1722963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e27ab86d0f1e09866bae9e2cc62f056bbee5f1d29d08331db05dcf4db655c7. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:04:52Z), 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/TCAFF2031981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10d18707485049059f804b9e76b8a44913f3ab20e8d737f62a7895f64fac8d9. 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/TCAFL2177568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc128ff5464c868e90abe61c3cad7ba048e79584562265b23ee459c2e37e6c984. 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/TCAFN2108288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3837eb1240b3c1e0027cbdde3ccb86dbcb6ac2d035019c1ced05d96a46c33ea. 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/TCAFN2108291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f87f22241b208047f7d133e8ad493fc48e91f5d5b9046e55ccbaa8dfa38939. 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/TCAFN2189740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3256ee3ac66e27a837e0ae24c1f59ab010066fa398efa29f3f9c0ec0c6eb8982. 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/TCAFS2162907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3256ee3ac66e27a837e0ae24c1f59ab010066fa398efa29f3f9c0ec0c6eb8982. 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/TCAFS2162907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e3b3c1d6fe047c434de58b344d9188d7a8dbd767c6bbd96ee645d1d405034e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:23Z), 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/TCAGA2210997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1805d835048333376353440041a70bac111d263f96f0a28bd28def13b88fb6. 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/TCAHB2319586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2173cf73284992ee45ca631d9ec8e44e53b63c5781df7c79693b587199118f. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAGU2392889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779182def3f472e028366a382de5f1689a027daf37b84538600aaea18ca716ae. 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/TCAGX2353953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d7344369c1f25c9b2208c5d4c71f7828b7f6dcaca5c759619f6c78aa4f2178. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAHM2302867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19ebe3850aafe3ab907b155b5aef63edc513c3ce0804d672c655c8cd96970b8. 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/TLVEM2460726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4f9cd56b3fe6ca625556d28ed366e770243a106a87aed42cadd498b42b0ed1. 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/TLVEM2460727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837c0400bf3746488f7cb265e5541d5b93cf640e8de5b6d52a33919f843e2d7e. 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/QT2VB2445183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb72ddf7d7ada9342763c3e5419790fa686a3727722d1525e3aa4689c1b5b37c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIX2488375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff53819ce4ffcca76ca52e2c68aad4460e06c1f6565090bfc5e870baa1ef084. 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/QZVEM1821665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9630c4d6efc0903f310bfeaec56bd9a6722afb8c2f841ee668d9760a6385b25f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:59:37Z), 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/QZPEW2546079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e78d384a911bbaa58a6bd8ab5784f83fc16e4fe8cecaaf69781e4dd3816d844. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJJ2553528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f3dbbdc1a95a87935820c82f0eb057a7116cbe6943ee51cad9fb7b7c332cb7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAJN2500627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3256ee3ac66e27a837e0ae24c1f59ab010066fa398efa29f3f9c0ec0c6eb8982. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAFS2162907.