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 0x30c0ee4d7e7b690149cc72a6ec5dae243a5ac87a5478e3ac5211f02fc403e62d. 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/36bf5d82-688c-4e48-977c-7ed2ca2fcf64.json and https://artists.proofprofile.net/proofs/artist/36bf5d82-688c-4e48-977c-7ed2ca2fcf64.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 0x429fd4d3d58ff7a214850708d4e7a4fab2ba18c398c07b7aea2fec141869dcea. 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/DEG932100974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668f21bfafdb89d5b111f1a3a015e6c64558ec6d3f5f78a7f4f0b3e82dc3eff9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AULLW2300197.
Pleasure - Bambounou Here to Please Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed1109318a59f7a5047781c500719e753b74fe2447c3f44e67cdd098434e114. 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/AULLW2400215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bf5f9e4e06db75e82b51329cd7c0e549c258547d1b9caf59b9bf3a02393601. 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/AULLW2400216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e5790f33e097ed77d8d8399e4af742db5c23b193310c8cbe389567aa754241. 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/AULLW2400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4c4f26fc7f659a956305ce844c3814c256b5ac9ab2ecda893fdca40f2979e1. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/AULLW2400218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea9c876a7f4f7072e3d3dcf2b02b3fa08472261b90f4b5d08da364521389de3. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEG932100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429fd4d3d58ff7a214850708d4e7a4fab2ba18c398c07b7aea2fec141869dcea. 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/DEG932100974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edd075da8cdab960cf8440fb616eb79e03762bde03905260063a3fb6ae978c2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUWA02201860.
back 2 front (she just keeps going) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2b06e4b6fe703d4aefe1be63648c6009b88330090bd59b62ae560bb62c563a. 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/DEG932402209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39c6cd1eb20d5d76096e218e2ddce18f8b4e88b80f5c3d871d68082f3ca6773. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QM4TW2492853.