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 0xff748b05ca968354bf1d21924ac286cafc7630cea4ef2bf00fd1ff299cf2f4dd. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d24b5bf-2692-4c5d-b8e6-53f34755bf20.json and https://artists.proofprofile.net/proofs/artist/5d24b5bf-2692-4c5d-b8e6-53f34755bf20.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 0x0b15c265eac8f2408d718ddc2388b930f2ae8f46f99617621dec6018129713fe. 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/DEG931911247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda69873412c8ba7de0cc0fd240d61ae2c5634eb49ef38a17dee332efcc2a4467. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBFKY1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee25624273c1a98f649f5aebb8ee38c014422d28cfc3f8913c7ee5fc263108a. 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/GBCEJ2400246.
Misery Remember Me - Shiny Toy Guns Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5d6426da1fc0990baed07327fd0fd44b8516041fd74b968a14b8eecfcb2e80. 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/GBCEJ2400247.
Flight from Angkor - Jamie Myerson Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74eb3f71363fecb3b3b9d53bef2a0541ec68c289473f8cdecd493f51ff337ef. 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/GBCEJ2400248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a12c03b4792b265a3e62893b087b1be6ea706c4e196187e6e57a603d810bae4. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:11:13Z), 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/GBCEJ2400249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fabbc0cf368a6511f4cd09066db391fb6e92398c497b2c52ba3a01889b99db. 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/GBCEJ2400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e8b9451c51421080feb90a585539d43da369921a9f4ec47bb117e5ba2bcab4. 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/GBCEJ2400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ee633f40fa1a05e4890d63ec3aadbecf9b08b495107f04cb70ad248e518d76. 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/GBCEJ2400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecafd42df9234ba3ad59a5e9ef2c320fb036bfa2a9c814ffac7366c5c110492. 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/GBCEJ2400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dce0194d7838d0e88e3943272c60c87f40749dbe0c8bd3464330ed47dc2ac7. 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/GBCEJ2400255.
We Never Went Away - DJ Slow Nyc1980 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9de7b1b30e36fafb2eee750150224b3cd93fbdce4f0d4d27e0301045c446a4. 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/GBCEJ2400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c523d02197128e4f4859debff07e28011810063e512014d9346a97124c7d57. 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/GBKPL1816348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5baf3b63a086ef81caf7bfc3e56fc3adce76dd3c4e8c27cd9fc8ba4076caf41. 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/GBKPL2025683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d1600be21d8928837d63964804ac3e9ff17bbad3cc85dca11fab098c218566. 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/BK4DA2301872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0510ae0b011a4d094c8489a6c1e9a054cacc499406df1be2207ab338b69917. 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/QMBZ91901685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4092d7cf7c0288de4b638f365f6f094b2e7796d384e93002d652f784d5b5f9d0. 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/US7VG1766936.
DJ World Music Conference 20 Años, Vol. 2 (Mexico Old School)