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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6d3cfc9c47b97cd513d601da24bed5ede8f80ca791329262d0a2734117b63f. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/162ad7e3-e719-45ba-a572-da4e13e1033f.json and https://artists.proofprofile.net/proofs/artist/162ad7e3-e719-45ba-a572-da4e13e1033f.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cee4924d6872162e0cbad2101a708832a6e39bc03d71821ac5c96d6edf0d2be. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKN6K2000638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98c1b537d8b1520852cece54b3bc3affbe65b6d39a70fba2b51cabac032278f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKN6K2000639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc863bad9a99fb89c039cb86d7ea290812f6d738efc0c4f74db8fa0361e1e1f23. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBGNS2200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1e911a9e9829c9c429fd1f3c5a1759626ffd4bd408eb5ca5346a9934037c6c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBGNS2200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7107aa76a65970fe428352fd376a5360e9148f4b10ed6b97a0138438924d82e7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBGNS2200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e082e88aac9e0e3b5fd425b9d70a10cdef2efa759791fa67de229bbea644501. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2205096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f772d8a6a57ec7c0223df8ac3c84ff3681d665e1aa319abaf8324653c24656a. 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/QZH9R2000009.
Never Seen You Dance - Massimiliano Pagliara Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e255358af6f7d992be2d001ed2fec2d364c0cb60637dc41019c8ab7edf639a6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDA72338979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ef12ae1e682dc57b5540f56d48f9e481fdab903d1ffb05f3c246a7b5d4cfbc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2205097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870313782e632948927b45dd01b17f4162e12c5cf03856d986c4e0c74e5d71cd. 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/QZH9R2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a82e03273a97a6873319cc40638cd595588ed30d83e8d0b93b3cd60185911e1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2205093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa720537468d9ef482ccf08593c5b815646250f5055de72f709ebc135a28d1d13. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZH9R2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b686e39fd51d7d00bb565970a6d799c434c80d45b7ac9cfbbbff2bb5bdb3b8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX2329444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a73e23fdb9b8b9615ee28f1279e53ed19524d75d6d05dcb9e751050f0e723f8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2205099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98869b3dc6e70e4d22d1426da5b58b3280b1068466bf3c0925c91fa5df5eb1c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZH9R2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a2134abb742b28f2853b2380766a4c85b4b4254adf425b46dcb00d8096d31. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2205100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c60990f1dac02b57c72223fd6cd1dbb45eeb7c9715d3d6b4b432e77a484452. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMDA62336038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382756da7c42c9c7ff9131e573635d839f4f89b65925381ca1ac2e90b23e869d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2205101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef859204b88df1b66fb17382021f3245d53049213aed35574ad6fa2d6c78ec91. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2205102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9d898911957e9301f47227e394e802f051d220664268a36cc2578af82cb10b. 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/QM4TW2398488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bde6379ba942ada577615685709c73518f5186bfffc1d8d1ef216c61845b93. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX2205103.
Never Seen You Dance - Demi Riquísimo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e9ecca732c2603b55f927e1ac472e3ad20bc7f4a24e35c1bdf93a938bccd24. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFMF2203848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ebeab00f5c849510298e01afa4cfe04b5b9eaaf410bce1ea50d991d3743cb3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2205104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11797b836941ecc58bb6ab7e3e1969c85ef591cc79e538112af81957366ed9d3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX2205105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47372e0a6e02358fb69cb910442b6d1bd7216ad0bee19135a24f21c40abc19a5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX2205106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939b6f73b8c491faab409a10c4c794eb9a5b06320e7326c87750de02df7dd092. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2205107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb0b0ecdc28c7a67b6bb3b44f16d9c000ec2f1bab1f92de1a850c362b83a97c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX2205108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66227feaf52a1ccf48544bdf8bab14b98505d5131678fb62fc9f2f82c31693aa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX2205109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96776cff79f45dccc1933324c7af0c16ca74f60d445ab8da17a04adb86c48c48. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM4TX2205110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f77c3beb4c1f87dcef219c945595720e5818fa71e8d08f3c95c1bef34171b0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:02:44Z), 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/QM4TX2205111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a5470370f7d6bd9b4df4a106e125d6f718056827f8a810e21ab849af9c8dbb. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:58:34Z), 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/QM4TX2205112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a2cf1ab6cbdbcc7e76b732e30dc2de1378dee281cddf078502c4dedeef8d9f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBHAD1600192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601fa92a2d733a6da1acb488cdd33e1012f3df1ed6a5a94da85c00067242fcee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBHAD1600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de764bfde600b0bf89ba7d812f862fc07ab0eb9668e01a111befad79171b996. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBHAD1600197.