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 0xf4f35d914509b3d01b19632272a43d81f1f0404f23f4c04dd467553c5e63d407. 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/f733a7a3-f4f5-4870-bac2-1d98c169b8c4.json and https://artists.proofprofile.net/proofs/artist/f733a7a3-f4f5-4870-bac2-1d98c169b8c4.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 0x034540344738a0cb392828f3581d967e0ee2d96a7629c1342674f54d9f642bee. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBKQU2437617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff9b443a93f18486ec42673ee47adfb669ecf708fe34dc76ea506c02db48936. 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/GXCM22400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088747e0c6be36e1f27d345242e341e1ad6593d331741c7fbbcfbc45c31bda29. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GXCM22400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92da4c7e815d1dd9241c70f0e3cbd7e43ae13dceb0f3b29719443df2594a190. 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/GXCM22400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff9b443a93f18486ec42673ee47adfb669ecf708fe34dc76ea506c02db48936. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXCM22400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1b0359425694f8fd9feb9446ba69a93f20d809a3da761ea0f03474367b4e18. 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/BEHP42400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85689e20696705c544513f6316e64b9da7ea6bd95c3a8176c021b10cf412781c. 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/CA5KR2444142.
Kama Yeah - Samm (BE), MAXI MERAKI, Marlin (BE) Remix - Mixed - November 2023
Get Physical Radio - November 2023 (mixed by Samantha Loveridge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c546f7d5e851ad6620f77282525692efb8265f61f4c2b532b28b6a8a85e056. 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/DEBE72300868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6897a577f9c2ee2b0b69c1529376fa1d6a28ab9fe7ab551b9e1a141f5351dee8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBLV62318021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbef3de30d68bc5af824cab0df6adcb44b066bc457b18d882fa4870c3b647468. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBKQU2488356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9c79ff7a6ad9ef1b98b2066381de2054f8aed89c67e5ba29c1a66c73243fd8. 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/QMFME2380774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9c79ff7a6ad9ef1b98b2066381de2054f8aed89c67e5ba29c1a66c73243fd8. 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/QMFME2380774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020900b8dbaabfbe0e8c30ea6b5af52dfb5517d09565e0a5dc5a7ea764f67956. 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/BENN12500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e92a7f88b5df6e1c153ea87377738a240268c38d81449d801bd2c0926168cc0. 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/USRE12500094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43311eff78ffedd10cbfe0b7dc6f36e419aed54608f2617966175eb03893a289. 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/USRE12500157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd6e31e6e43f14679753bdf6faa76bc7d9ec77ad0a00232549db03c05ca802a. 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/BX0BA2300048.