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 0x1c92098e66cc9e70fca01a8a8d1212fb17be9a409fc8c2d204e2f3e175f434b7. 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/fbc0bbc5-8ee3-4cb9-8cc1-7a664f87ec6e.json and https://artists.proofprofile.net/proofs/artist/fbc0bbc5-8ee3-4cb9-8cc1-7a664f87ec6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Special Louange, Vol. 1 (Christian African Music)
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 0x424eaff34edb2cbc92fdb2d53fb3f1fa869589481c4b1239ea6c0ab39d4b5a5d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR6V81378585.
Special Adoration, Vol. 1 (Christian African Music)
Special Adoration, Vol. 2 (Christian African Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f30a1ae50a9792a3ce1c5da2be1dfc950ec4ef03f28ba6ab70bf935b1358fcf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR6V81377045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b35be0c9309c792231f68b606f8c12155ed410a7a75e46226a662ed09f9168. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FR6V81377046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190cad850d06fd39b122523ece828546d840be78062d40068058a3c387cbda20. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR6V81377047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dbcb8f319bae293854a27da043e219219347f28b4a7399d8717239fc049ff8. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/FR6V81377053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa870d15e405292bbe7bcb694b9f87ca05d237afcc363e808d465eeb0b2f86487. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/FR6V81377054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b9c460a10d285be17e296c196c328dc09e1e82a13279a5e0fc8f3f3c4f17a7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FR6V81377056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaed99c5e55f2392303d98b26c06893c7c3345d3cfe50ca265387c75101d12f4. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR6V81377057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bbe34528a3882a1b9e9ce121ed2dba45d1b907cea9440ec6880ab49e6834e0. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/FR6V81377066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98e3074038cc8c0baa2632589ffa703e09eceea63cfc4904590df889f164e7d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR6V81377075.
Special Louange, Vol. 2 (Christian African Music)