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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb346281473bed4dd75e8c38d55ba3632f0bdd77f80cb98441dc8b372ee6e91a5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c76704a8-ef75-49af-84e1-39b7129ae6f0.json and https://artists.proofprofile.net/proofs/artist/c76704a8-ef75-49af-84e1-39b7129ae6f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rambo Bars (feat. Conway the Machine, Chris Crack & Nolan the Ninja)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719687535dcd928eadb204c1db3caacd185814575fb96f61038f9c93a80deb93. 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/QZFZ22059495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3e673bb791dcc79348a3f90930752638a55480e5c24745006a33fd51b471fc. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZFZ22059490.
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 0x2c287d54180a63e263eac0a3a08b3bb9016ab85f23da752054fa8c0842bb436a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZFZ22059493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708c62be91e70ba3375f39774806de130756576502378aa828ad181078523301. 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/QZFZ22059501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53afcec6401d22106f9d31e280e97c4cddd2639f166779cd68f5168d34989438. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/DEQ022283000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55df0fa811990144df284dd61a70c7689cf4d54779e34dd9f74e306c83d95839. 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/NL3TU2200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c15883a1e16b265ae37ca84390fdeded9a0918a40c9521c9048506f50dacd7d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NL3TU2200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b1722d4031e27a08f4404f32b3ce652972c7e3944658a7a28a5d3b1b0a00a0. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:11:49Z), 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/DEQ022381657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf584db919bf7880e212c16d2170a7702def9fac9a57c0d779aea7cdbf4ed791a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE5752425039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0363a2ea32cf8a26047c35e3bcc74bc802368fa74f639bf97bb51687c1bc0933. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:01:19Z), 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/DGA072420738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859266f58c4c0eeaca84f9adc853df2d37219288ec398dffa58125509fcbffcd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DGA072420739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a85815479ce8d5e6e473965add21f023277c004911bf8f0f12c4dc590dde01. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DGA072420745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbd7e922ec6ff0494449764aa65be8ada178b6a23243f59ea3909eb4c1b6ca2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:19:50Z), 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/TCACH1587570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b55234d1e613de66da8df63ad26d50c8f973bea12523cab6df274fa1b3ac784. Chain 2 (Bitcoin): anchored in block 957523 (2026-07-11T04:55:40Z), 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/TCACH1587572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a455ee80aaf9a282d39a453001287cc0343b315d562b910d4276b81215da6e8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCACH1587574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54601d94d374f0e9436b03753b254669ba59bb97bc983faf05084f6e60a1bfb. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/TCACH1587575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5f8ef090d82fa480da2fef6ae381e8d260557bf03082e8086a09fc83cefbcd. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCACH1587579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc382ef104552e71b1cf1885cade6c77eb799902956b69d3dc42a5dce0abf7bbd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:41:51Z), 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/TCACH1587580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe304f4800b17794c4b26a265987c42c76bbfd067365296b89d58e5a92e716df1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCACH1587581.