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 0xeb56f6fc8874091eda625422b2b30096c0c3dbc98b952d4074aa68418669bf76. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e7316ce-9f29-4fbd-9c81-a2aae0d6e617.json and https://artists.proofprofile.net/proofs/artist/5e7316ce-9f29-4fbd-9c81-a2aae0d6e617.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Moon River, Over The Rainbow, L-O-V-E - Galway Pub Live ver
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 0xb891569ae27e4f0ceab2c5d19f6375aa1cc0cdf074f7f70cdd033c694f8d795b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:43:59Z), 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/KRB471700955.
Knockin' On Heaven's Door - The last busking in Galway ver
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9c4579966768906865ea1332adec02a29cc9f3bdcbe7d944f6e4c93602f2aa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRB471701000.
To Find You - The last busking in Galway ver
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32df77b1056ba07b06acabf360a3d8a00fd01d3829a7bdc9dd8e7eba38bad632. 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/KRB471700999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd8ec96b3ba6175b346a4477f7fd7d3901878c83a42014795ff9e9b311c84bb. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/KRB471701074.
To you who do not love me - Liverpool Busking ver
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc004395f23c1087a359208df3f0aedad4ef41fbd2aa8cdebddaea7358e9b190f. 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/KRB471701073.
Don't Look Back In Anger – Manchester Busking ver
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b89d9902e062791ee5517023a62d2ce529f625f07b8b8d68cd6a27015ad7bfa. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:36:30Z), 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/KRB471701118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d84da4ab1548f509b2e989025cbf6586282be7a8901859a636197791f7bd075. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:35:38Z), 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/KRB471701119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bc430628e38b5ec53a32f20596a08e0de7e1f680e90d8eaab9f99288003cd9. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/KRB471701145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c52a72ffb8e49b317441b3023c44cbc9e49cba2c1ab43f80227fe1b4f66f1b1. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/KRB471701253.