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 0xf3bcf4d7d6472d943297ed4d605052dcd9ab32adcbd8de152b2409047c124935. 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/9ebdc74a-27de-4aeb-8565-27373511af0a.json and https://artists.proofprofile.net/proofs/artist/9ebdc74a-27de-4aeb-8565-27373511af0a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Création, Hob. XXI:2, Pt. 1 : Récitatif. "Und Gott sah das Licht"
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 0x1fe945db598c9abe3b02b44a9351c40affcc96c5c1ac921fe65949e6040f8db2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX211501002.
La Création, Hob. XXI:2, Pt. 1 : Aria. "Nun schwanden vor dem heiligen Strahle"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710d2b23d72c6630a9d2c89e45241cb095b0bb84842f732aea7e4cad3e8419d9. 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/FRX211501003.
La Création, Hob. XXI:2, Pt. 1 : Mit Staunen sieht das Wunderwerk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f6b0974151a603772d1bb4249df3d5d2a06973ae2e12569aacaaf531fc772e. 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/FRX211501005.
La Création, Hob. XXI:2, Pt. 2 : In holder Anmut stehn & No. 19, Der Herr ist gross in seiner Macht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc12a34e527384d984cc661e701e108ee5b1011798dda35c65983c1fbcaaa0c6. 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/FRX211501019.
La Création, Hob. XXI:2, Pt. 2 : "Vollendet ist das grosse Werk", No. 27, "Zu dir, o Herr, blickt alles auf" & No. 28, "Vollendet ist das grosse Werk"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1d64a7def7d2f981b84058ecbb12235fedb068e70c87022ee1069e8d7d1aab. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX211501026.
La Création, Hob. XXI:2, Pt. 3 : "Singt dem Herren alle Stimmen!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90b337be5c46c2180ee66b44a31affbebdda9a0cb4ae95aa0c31f8e41aa1e6a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX211501032.
La Création, Hob. XXI:2, Pt. 1 : Choeur. "Stimmt an die Saiten"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ce624fc33537ff87909196af3199777926fc69c820c558be32dcef3cf16b4e. 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/FRX211501011.
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
La Création, Hob. XXI:2, Pt. 1 : "Die Himmel erzählen die Ehre Gottes"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75950726fc7220da1f4391bd68fdc483e5d1da2def3cafd62be662e51b6a2af3. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FRX211501014.
La Création, Hob. XXI:2, Pt. 3 : "Von deiner Güt, o Herr und Gott"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83871bde156cfd88e5ef4ca1f0e6dbd0307cf642f49bb09f9cf9b74841dcd89. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FRX211501028.