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 0xebd6ad28bffc6d9f03c570e932f4bf7a77db1b775eb3749948ae09ad9c52cb54. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48d58031-0937-48be-902d-369f9ba250ab.json and https://artists.proofprofile.net/proofs/artist/48d58031-0937-48be-902d-369f9ba250ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Divine Mischief: Concerto for Clarinet: I. A stranger and a game
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 0x3efe11fa7397ba5079ea08f29522f3c2292215a614e6f41033f3b1d7ef0bff11. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/GBLLH2486001.
Divine Mischief: Concerto for Clarinet: II. Disappointment, regret, regression: a waltz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a4c5f1bc63f53e203c39ba5c95bac611d42ce24f0c671c35d4652e55cdcacc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBLLH2486002.
Divine Mischief: Concerto for Clarinet: III. Spellbound
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6814ab64c0bb6067332fb106b6f6e4abd2bb27523b93d038c1863a9478503a0d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLLH2486003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167b3cf8d824a09dd7fd51db0173bbf2022b9260f78aa9e8694ca0bed9b7364c. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBLLH2486008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85551a93c115c484f697a01bb640e1766e51d609d3829dee5abce94df13a3030. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBLLH2486009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72217daa14810b19b55c764b3fb0fdbebe17fece58e9f54dab46bd692a83014. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBLLH2486010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58e6a52b051b2ec0a836aa790de5ea0f9e7ece9dde2af3ac26957a023662e63. 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/GBLLH2486011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6814ab64c0bb6067332fb106b6f6e4abd2bb27523b93d038c1863a9478503a0d. 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/GBLLH2486003.
2018 American Bandmasters Association (ABA): Baylor Wind Ensemble [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa017a73f6d70e3f817cf6c3d73fbc5f3d3b39f0ce2048ebf5e1a6900a2d3fea6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USVZX1819513.