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 0xa6307148dc94cd3265362f90d3c10bf1bf1f0def71cac03cd2c4e2d5be217536. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd40b619-ea69-49e7-ad0d-ca369d1de60c.json and https://artists.proofprofile.net/proofs/artist/bd40b619-ea69-49e7-ad0d-ca369d1de60c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Deitatis Majestatem: I. Deitatis Majestatem
Lalande: Majesté (Collection Château de Versailles)
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 0xd2e0ba05ac0aab7af211559137222ba276e75722e9d21c80a4a4275888b4c607. 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/FR50X1796801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6064a6452b96b736bc1baf60ddf22e660e2f159718be753ae1fb40c4f14a3e5c. 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/FR50X1796805.
Deitatis Majestatem: VI. O mentis jubilatio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281db4db20481d0449804e4070385712adbc28b54a3698a56cba921b56a0c725. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR50X1796806.
Deitatis Majestatem: VIII. O bonitatis prodigium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90858d5265c9c056f22c1d99cb4cec675e21523c87002e2a954985393bbe7678. 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/FR50X1796808.
Ecce Nunc Benedicite, S.8: I. Ecce nunc benedicite Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108bd333e4c5bbbe949747be7876979222e965139d798a2487469faa8a25fe21. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR50X1796809.
Ecce Nunc Benedicite, S.8: II. In noctibus extollite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7f98679fd648b98d0190ff16cf7925baa6e7e713251da495bb8ca288fa5900. 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/FR50X1796810.
Ecce Nunc Benedicite, S.8: III. Benedicat te Dominus ex Sion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfb791f59e99a92124f2b7858e0cbcf509200903848a19342d0b8355f55288d. 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/FR50X1796811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d8ad46293032d9a1ce4586ed33493545de8c51934c4674af98afc1cf4df4c5. 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/FR50X1796814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b8350d5a5b45761ca01a2855786411f3ac418facb4225117ad9822bf7189b1. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR50X1796828.