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 0x2ad98fcc7dcb913760b581042d3f171d00897397bcafb3b962505308bf7f1b2c. 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/26886d69-8a3c-4175-8b3c-a6319f86c69a.json and https://artists.proofprofile.net/proofs/artist/26886d69-8a3c-4175-8b3c-a6319f86c69a.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 0xfe865da6d2466713b416c311c6ed6e9106ec9bcb8d5a7f8aa308a47331ae3753. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZBDSY2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d115b4536591ae62343ce28c1bb73a7e0e3e1b91cd299b8f751b1617e1c8880. 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/ZBDSY2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f2611c824e57d23b8cff539be66dd8316872ad5d7c9616e726a8e6c18a5701. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZBDSY2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb554b3e3ea51723fe59615372a19e6770a78e59115a5d630dabcec2207cb5d7f. 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/ZBDSY2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1034bdd8e84d933e89a3eb727441cce895fc57f02f219f645aa71dcb95d0a0fb. 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/ZBDSY2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d09d88a0e1b09eded69c38191187e66345e29d42c63d7225fdbac97f49f96db. 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/ZBDSY2300028.
4 Rivers of eden (feat. Horid The Messiah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7c821e2d0772e65f266ffba4b665af9c282e1e3b465ed7a98e0a078f9ba534. 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/ZBDSY2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df6a9da5d4899839cc011091288e3da1854db61c2d4cf20bd199cf182a5c3ea. 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/ZBDSY2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c087933c322264a3dbc95851b577f84f524356c1ce4c23180e61196d003a47b. 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/ZBDSY2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96991c90349be6b41e0c05511a0c7ae2ccf2d6b8d5e90352e5d45aacf9674262. 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/ZBDSY2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4568878b1a1577772511fe2068a3fb22ce448cce93424a3f7fb0889912e097f. 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/ZBDSY2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf18f872d8219872681b5b3be413d5ba55e8d6837b273799cd69e33f9317f093. 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/ZBDSY2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526ac3bbefeacd7031b6514fb8b5d222a0d1a1afa17520fc9aa660f30694ad32. 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/ZBDSY2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe865da6d2466713b416c311c6ed6e9106ec9bcb8d5a7f8aa308a47331ae3753. 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/ZBDSY2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7518e4b78042dd8b3116527513f138ffa3803a754c2dee768ed980ad0b406acf. 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/UKXN22383869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb554b3e3ea51723fe59615372a19e6770a78e59115a5d630dabcec2207cb5d7f. 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/ZBDSY2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5600cb3ca38849ad519891e85db45a47a9a47138521e8cc2d555b95823f5b8f4. 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/DEY472278514.
TARZAN (feat. Master A Flat, Herc Cut The Lights & Kindlynxsh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e5afaf8c843719013c4e813280edb71115b19cc86ccf564b74feb8ae901d01. 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/CACWV2080751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e38496edbc138359613ab69342cd13e21eee0f504beedacaea123ff22a480bf. 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/ZBN1K2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae4c24fa91e938aba9fef58d6c80d931e5109053173169e96830f97cda8cf63. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZK6L2157074.