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 0x0c7ad0fa9f0d7f3f1b0756eaf62750ac7e36c8fb4dee8b2dac230173abdae53f. 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/9e89cfe6-84a4-492a-8964-0ceed2c5c41c.json and https://artists.proofprofile.net/proofs/artist/9e89cfe6-84a4-492a-8964-0ceed2c5c41c.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 0x03f6f8d501152c03b05db9e1cacaa829ccc5d5fad0dd48c2be5e77879c6f0b9b. 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/GX3Q92090670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f6f8d501152c03b05db9e1cacaa829ccc5d5fad0dd48c2be5e77879c6f0b9b. 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/GX3Q92090670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bea922cb5f7b2266b2a820907d46cff0e0d77ef0b7513cd479f4c62299e0109. 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/QZNJV2177387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853eb37ed423b38779dfdc3db8047814e2f11d6c130b9cbc2e31d334bf8f0033. 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/QZ5AB2293288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3638fb4461d1e878b898d0dabcabbf63ac67c6bf25c0385b9c0e47256b6b62c. 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/QZHZ52276776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe937511345b923ad30025b1282c16a5777e9dd3f9d5c2f65e6a38b34f206dd99. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZNJX2236141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d51bb46ec7e42cb750c2133253a2f1da33904794ad9d9a9063e38d20c9c5ec. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/US7VG2228507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2339a47b2155511d143557e297975ed012a864c7c93ee0978e0041a043dbbf. 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/QZW9L2262216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49903df82998a8654804e1b0cc7dfbe0cb125d2d16133470ecd2e844b1a4743. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZNJV2440875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16dbf7f2f741d30849965de0962f917c757ce862dff813ecc2573c07c706fd9. 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/QZNJV2440876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf356ddaf679cd06528ef32425176e1e96bb8d0276015014a7a8c62316eb1a211. 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/QMRTJ2401188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab3c5a79032628a99b2a28538feb5547f5d851b458f61ecf9e1f37976d0e4df. 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/QZW9L2453413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fde67df7bfb5cc6e804b5d2baec3f6ee1a7064129568332f601319ac6fec08. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QMRTJ2401271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef31f54ae5c11bef0547b7219cf9f35fc8928d5be7f23415b4b891628d3f9d64. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZW9L2496269.
The Greatest Bend over [Afro House Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4601123e89522bae5836012a1591b51b21e9b1d1de169fe73d7c19f807746f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/QZW9K2534621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036fc3b6d0aca91b1c18e00ae63722619962034f6bb38cd0b2bd8fd6574cbcd9. 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/QZTRX2376757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532d42db08b66eaed63fc85565c696fe79a19467b8377dc8896f271517d6af5e. 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/UKK2R2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288bed1b61e9aa87be483280b29cfe4e1fc608a7db1e17e8a586e216b2a874ba. 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/UKKSX1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61ea838ed20bcb871f58e42f5cba14e31e07791c05612f0c14f86db41078941. 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/QZ5FN2438863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61ea838ed20bcb871f58e42f5cba14e31e07791c05612f0c14f86db41078941. 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/QZ5FN2438863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700e2ca648f44220ed70c89b9cd7588d25a755787fb6103f25679926208ce920. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QMRTJ2201247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0938f849a44c98674e21c3983c3c95d65fddfbac719a738d3f8402592ec119c5. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZ5FN2429432.