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 0xbafdaa884fac7e0981cd3d7cff2739d70352fb4f8fea7a2f61f8fac3f2130051. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f15c622-7fe1-4226-9584-f578ba042659.json and https://artists.proofprofile.net/proofs/artist/9f15c622-7fe1-4226-9584-f578ba042659.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ich hab in Gottes Herz und Sinn, Bwv 92: Recitative and Chorale. Ei nun, mein Gott, so fall ich dir (Bass, Tenor, Alto, Soprano)
Bach, J.S.: Cantatas, Vol. 33 - Bwv 41, 92, 130
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 0xc716971b262cd4827e25d5416ad2f2136bde28223a43f7b356fe56ee93009eac. 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/SEAEP0641130.
Ich hab in Gottes Herz und Sinn, Bwv 92: Aria. Meinem Hirten bleib ich treu (Soprano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbf0d1a86e87c7eb93e24aeba52f1c13901cc439238f3abcbdf533669e4bafc. 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/SEAEP0641140.
Ich hab in Gottes Herz und Sinn, Bwv 92: Ich hab in Gottes Herz und Sinn (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153ceec8d6369b87b3851b5651c33d45ce8d7577e9547b610f7e741cfc7774b6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEAEP0641070.
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
Ich hab in Gottes Herz und Sinn, Bwv 92: Recitative and Chorale. Es kann mir fehlen nimmermehr (Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33d3257e4ded703191b36e0780b954546ce4dd5406878e2f7029185d3e29c71. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/SEAEP0641080.
Ich hab in Gottes Herz und Sinn, Bwv 92: Aria. Seht, seht! Wie reisst, wie bricht, wie fallt (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18c6bd7f97ff5f29ce77cdeb5e4fcf19a8b5ffe73bfa1003e97333b7c43d288. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/SEAEP0641090.
Ich hab in Gottes Herz und Sinn, Bwv 92: Chorale. Zudem ist Weisheit und Verstand (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7439e16d4a265ba00c09c666b7b09f7fc93fa3fa44ee37c4283d9f82597da342. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/SEAEP0641100.
Ich hab in Gottes Herz und Sinn, Bwv 92: Recitative. Wir wollen nun nicht langer zagen (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cfa56a9356ce07efa53f53fae866bab23b1d7455602ddcccb3948d0c7d7aa9. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/SEAEP0641110.
Ich hab in Gottes Herz und Sinn, Bwv 92: Aria. Das Sturmen von den rauhen Winden (Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddd8c0b2a73c335c85ae13edb7ef8a1caf3ff724f9394feb637bc843fd330d0. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/SEAEP0641120.
Ich hab in Gottes Herz und Sinn, Bwv 92: Chorale. Soll ich denn auch des Todes Weg (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8a32b7ebbd2b1b361d7efcd47b8297dba57f465f95396c28d73d33fde10050. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SEAEP0641150.