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 0x484f0676c8ef079468dce8c287fe1b3df9f689ee773c6de803957b35ed006f53. 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/872e3538-0e3c-4d3c-9519-b67ddc5ede94.json and https://artists.proofprofile.net/proofs/artist/872e3538-0e3c-4d3c-9519-b67ddc5ede94.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 0xed57f6bbd70b8f97ac7da18fa6dc0f47c97fe3157eba8d27c07e67d97af980cb. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ZBFOP2100001.
Never Ride (feat. Sjava, 25K, LucasRaps, Wordz, Thato Saul, Saudi, Maglera Doe Boy, Buzzi Lee, Roii, YoungstaCPT, Anzo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f22e4123088daf684528641338720a9de5e786db61f4e7e8e3e5f3a18be36c. 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/ZA56E2201078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f22e4123088daf684528641338720a9de5e786db61f4e7e8e3e5f3a18be36c. 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/ZA56E2201078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547f3d8b4bd2652119775d52ab5caa590bafffb10d083c3a1af3f8ae075ebe31. 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/ZABY02100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb4b06f2be1a502c8bfabdbba89f014d01be6099707874f47354d2f936b4722. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCAHN2364365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0e5ef5442d59f27c75b2e4740912cbeecffec9addd318fd80ba2b2ee0ea345. 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/TCAIJ2450477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a75b4602d3bd976417ed4661aae0dab8dfb12edd6150490341c3d4101322f1b. 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/SE6SA2487321.
Sho Boy (feat. Riky Rick, Junior Taurus, Buzzi Lee, Yanga Chief, Beast RSA, Focalistic, Blxckie & 25K)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f643ad15ab939203925aef602d576d176236f4a146de6137697da98bc6d65f. 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/ZAA012100232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547f3d8b4bd2652119775d52ab5caa590bafffb10d083c3a1af3f8ae075ebe31. 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/ZABY02100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377c121c28774d957c8983b9b07e3b550479eb2a59a691fb3aea7ff70f9359a0. 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/DEY472278307.