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 0x9ce8015d7a4291e7e75246a8743912fcfbe06214ddaebbaf04e68ef1d1d691a5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b6ac9b4-c6ed-4b18-880c-f254faa1b9dc.json and https://artists.proofprofile.net/proofs/artist/8b6ac9b4-c6ed-4b18-880c-f254faa1b9dc.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 0x6eaca6633706c5e865e4ac4cb6f0e6832459b89b2b382b599725854c23834aad. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GRM019500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d05d85ff60448e6954d21df7d295fd71d450bc54177ab92e5c896086098cd0e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRM019700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e41558eba41430ca2829b5a860efdc91996734be55f410d908a2a59fa1301b. 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/GRM019800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660b454b62f282ce3992363d9230c12ee34ae3bdc96a36b0057735cd6d7b0f49. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GRM019800157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9721c53be2d2bbec55e16b2c1c206881aa22c8e13b896deaad7eb2160f656b. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GRM019800158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fa4b242ab1ce16d2103c2ffa0735b54becb8b2c5a4ea4aead933b35f2a909d. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GRM019800161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55276b08cb791f6e0c7e678ae8a33653e847d384cea44f75fc670b3e6fbd7c61. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/GRUN10400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d0bba36850788a92a1bdb43b3ded580cc3a3a35d3b1cf8008352e52c21e0a4. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:15:16Z), 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/GRUM70801815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fa69c6c54e4b262dfcbfbad71895d161428dab1e4a552ee6bd286a73e3b4c9. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/GRM019400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f14fe0b0bbdc96d6179135617a7ca2b0c0b006a72a9777258e71ecac7e29ff1. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GRUM71102515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ac4bcda63b5e23128b2e5760b136ebb0e6c801e1c8d0e9d7517ccc87056ed8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRE011300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55276b08cb791f6e0c7e678ae8a33653e847d384cea44f75fc670b3e6fbd7c61. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GRUN10400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c6245ca6f32c24d9de9dfac17fccd329641f25c3009ecab382dfdecfa2d553. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GRPT11400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a21e4c99f06bfb41e68bd0042906885a105a0ec19c3fe971cec4ed48965a85. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/GRPT11700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb920123f09afd879e10b7fe445d669feafe72a155283dcbba0431838982869. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GRPT11900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f55a01233564e1d7bd6f2349c75dc40d709d0ce9f70d7d0ad187f2c40d98984. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:31Z), 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/GRPT12000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fa69c6c54e4b262dfcbfbad71895d161428dab1e4a552ee6bd286a73e3b4c9. 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/GRM019400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc267515afeee456d3cea68b43a4940aa908c550d12381442cc163a8a9dce25. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GRM019900307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288e63ffbb466dd0d34e55615b9507b4237222cc9a9ca59d475f1b6303bb4a17. 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/GRUM72100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fe0048048bf54196eb051db1a9b805d420308664d21c1f6af066e458d190f6. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GRPT12100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267ad523abb4eba9405ca3791c44eaa72de03de055ee811175c17e32bb234ba1. 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/GRPT12100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76b02ed85af2148b758ba2d76ccb6fc481843aa3574493de3c05ca465f4746f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/GRPT12100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf32c862e74cbffe33a8bfe7686d8471fc615748a94df78f6f5176fe5dc8f5c6. 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/GRPT12100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a76f2614222ea07733061294033e2432f89571110dc6d8dd21adba72199e86. 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/GRPT12100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ec149fa5da97fff5d1fa5bc32c8db237a5635fc21571900625354cb81545a. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:17:35Z), 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/GRHV12500431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3933150b3fcfa14ed44eaa37891405c4e99d64e5d1ce28cc291833b4d10ff878. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GRHV12500457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3933150b3fcfa14ed44eaa37891405c4e99d64e5d1ce28cc291833b4d10ff878. 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/GRHV12500457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48af35c0b3ec5e227d53f78f62921655034425ea45668ed5759ea058da3f6313. 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/GRHV12500446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ec149fa5da97fff5d1fa5bc32c8db237a5635fc21571900625354cb81545a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:56Z), 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/GRHV12500431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8e1a02f33e6e5ae05a6f9a36f8e37f88f211572972543f3acaae0e557fbbf5. 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/GRHV12500478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3933150b3fcfa14ed44eaa37891405c4e99d64e5d1ce28cc291833b4d10ff878. 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/GRHV12500457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48af35c0b3ec5e227d53f78f62921655034425ea45668ed5759ea058da3f6313. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GRHV12500446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ec149fa5da97fff5d1fa5bc32c8db237a5635fc21571900625354cb81545a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:39:34Z), 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/GRHV12500431.