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 0x1634c5470734538c23c699933f466782152b18db3fcf0943d4dcc35423e9f69c. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff6a600f-0162-4490-9d46-00662e9fd2c2.json and https://artists.proofprofile.net/proofs/artist/ff6a600f-0162-4490-9d46-00662e9fd2c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lalande: Majesté (Collection Château de Versailles)
Deitatis Majestatem: I. Deitatis Majestatem
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 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.
Deitatis Majestatem: IV. O caro Christi vera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da98e5c6acc6f07a57a49e5dfda3bf2fc6c44daceb9c509e5cfb993c8080c12. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR50X1796804.
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: VII. Quam dulcis est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd88b05592fcb5b5210ff5c7572f03a2cb33eac40e83ae9d8b503e9bedae65d. 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/FR50X1796807.
Ecce Nunc Benedicite, S.8: II. In noctibus extollite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7f98679fd648b98d0190ff16cf7925baa6e7e713251da495bb8ca288fa5900. 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/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 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/FR50X1796811.
Te Deum, S.32: X. Tu ad dexteram Dei sedes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9bd375d65cff463776e7bcf2adc94efc201072a697cfb72f9ec80314179b8a. 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/FR50X1796821.
Te Deum, S.32: XVIII. In te, Domine, speravi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160a09915cf2edf266010e18c668a126f133e7ed3a83b968fd750782b413e5e5. 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/FR50X1796829.
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.
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
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa448cff8b7d40836f8a2e5b71f53a77a01ae0bb17be98247f7dda2b40e7074b4. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FR50X1796813.
Te Deum, S.32: IV. Sanctus, Sanctus, Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bcd0ee0da2b9310e1a116206ca29c87a09c1a073366422a20c8625a76ea9bd. 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/FR50X1796815.
Te Deum, S.32: V. Te gloriosus Apostolorum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4233bb56b0ef9616f2a7ac0efb97701e4237cb8e90bf03da2285177e81a1f82. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR50X1796816.
Te Deum, S.32: VI. Te per orbem terrarum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153e386a71efcc504e599563e3055d15b92e629c9dd09b65499c3f3801d106ab. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FR50X1796817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66faabc4cbdf546f04117100b6d7491a5251ef0622dad72555d9df83aec0ac3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR50X1796822.
Te Deum, S.32: XV. Per singulos dies benedicimus te
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb619ef72dbb87f93dfdbc8436e18872d51186d84df8fece19f2a321d329c5618. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR50X1796826.
Poulenc: Stabat Mater, Litanies à la Vierge noire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840c6c1a9fa05afc8ce78c72ebcfeb50f69648c29cf766be4c535b84f4687bc1. 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/FROV62232302.
Stabat Mater, FP 148: III. O quam tristis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd998004fac1f6b23ae7de77303bdda8d14e554ac667a8ce7e93ace404f314f14. 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/FROV62232305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8974c38fe6043c9ddf0ba651216c564c43f2c3032837f2ee20252b2b85cc4267. 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/FROV62232306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a164cc3d3a88dd50c4abcf9f6f449b99c4dc65681a4dc83e692e5fa5c339d1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FROV62232301.
Stabat Mater, FP 148: I. Stabat Mater dolorosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc802d425e44a161638d58555ef15ef7110e0d77fa27853f64d5087bc99485ec. 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/FROV62232303.
Stabat Mater, FP 148: II. Cujus animam gementem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf0df8cf4bde84e51fc4eca896e6e6c452336784fc74f1b8cad4f077b550fd2. 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/FROV62232304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adafeb1d39c17bf682ce4b0c0d966fb517b2c7398fafab579bfc5de078bf823. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FROV62232307.