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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa752bc66794aabbee3d177867172ce7cbc7173726a9784a54e21ddc68d9ec534. 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/6b075809-938e-492c-b10c-2f3fda4c4df9.json and https://artists.proofprofile.net/proofs/artist/6b075809-938e-492c-b10c-2f3fda4c4df9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Himmelskonig, sei willkommen, BWV 182: Sonata
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76d26eb127d695b3e168a988bcc0cdfff7b61e7cf0684851ea4a615afbd20bc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEU921078306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615c61f18fad149989cf4aa7e298bcfd5c38b706207f4708a0272d89f5eb2ff9. 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/DEU921078307.
Himmelskonig, sei willkommen, BWV 182: Recitative: Siehe, ich komme (Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df3acc5a0c970eee54b8cde61e96516067d7e17c22e326fc45d6981750645e4. 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/DEU921078308.
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
Himmelskonig, sei willkommen, BWV 182: Aria: Starkes Lieben (Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1e299d6da9c9625c625722db7aeedef4f963d63d7231100fd2e9e9e7065f95. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DEU921078309.
Himmelskonig, sei willkommen, BWV 182: Aria: Leget euch dem Heiland unter (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7993bc6ed0c01fe9e8def2cf37e4567402540a86729d353080577a1d8177748a. 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/DEU921078310.
Himmelskonig, sei willkommen, BWV 182: Aria: Jesu, lass durch Wohl und Weh (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd941df8bc72df35ff6ff837dc803aee8977709067aad9b54438e6cea54ccae0f. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/DEU921078311.
Himmelskonig, sei willkommen, BWV 182: Chorale: Jesu, deine Passion (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026557d49397fad503ae9eac45f3ef661f783aa0183b8822314cb28a00cbbd71. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEU921078312.
Himmelskonig, sei willkommen, BWV 182: So lasset uns gehen in Salem der Freuden (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660ac4532c13a1ecbfaef3a3c636711af12b1501bb31e4ccb92830c67f0b582d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEU921078313.