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 0xcb623b912707c3a72866fe4b63db392d93f52884781b18e2691c80e770ca063f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82d87d99-58d3-4fd3-9440-94b5ede19c08.json and https://artists.proofprofile.net/proofs/artist/82d87d99-58d3-4fd3-9440-94b5ede19c08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
French Songs for Flute & Harp: Debussy, Ravel, Fauré
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 0xc824f3d4065a1e814ca8716687b99c0d754f662a3913915acf89c9e434664851. 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/NLY332000775.
5 Mélodies Populaires Grecques: I. Chanson De La Mariée
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be2df830dc4d8d5e0c0f04733e2a74cdda3341df781db52213b738393c8f873. 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/NLY332000776.
5 Mélodies Populaires Grecques: II. Là-Bas, Vers L'église
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfc55851d0b23f1881bf569906411e2c4ede84f40769d6eff787cf49d4e006d. 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/NLY332000777.
5 Mélodies Populaires Grecques: V Tout Gai!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c66387bbc18598ce9bfb5ce9ce651f96ba0e9e766f5d27612329e2ebfdcf17. 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/NLY332000780.
2 Mélodies Hébraïques: II. L'énigme Éternelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ba494d623c49fd0c84fc0219eb4c6fdbad6762ceb11947ea1e31d7c535d66d. 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/NLY332000782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeed338b52a2612c069aaca92ee5fa3087cd9f5e6b3c716dc6db24e096c252e0. 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/NLY332000783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7626dffdce170e62ebdc6f4aa2fe43835ea926886cedf8b00cd7f318e8804880. 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/NLY332000786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a1ccc0e70dc18e64ad46c6ca2ec535b216352b0d1723d226b8ea57586b23d8. 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/NLY332000787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf624144c211b27d67323725df3b58fce14150a9634b7a841a29222591c49953c. 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/NLY332000788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f22f500a5747247789ac8f479d16955e59303afe3abab57216a41f7d00eca1c. 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/NLY332000789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94886793f08e9604f8c5fb07e59d5b174c6c85a47d38d50554cb803759f52a95. 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/NLY332000770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d488d4ebd697fe5412be1e2f2bf6dcd629638b1ff53f9f47a53ab483c48e61. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/NLY332000771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0774be62836fb51524f385b8a1f846fe8ae114d484a53ab5b80f760a8e7e45a3. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLY332000772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9124c170ed1960506ed3f159b9f5f7d49246fc47c07deabd7ffab528a3fd4190. 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/NLY332000773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff73da3d5d13f1e44ca351212da856dbe3aadc069f8eff58bcc6a6ba911fd7bb. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLY332000774.
5 Mélodies Populaires Grecques: III. Quel Galant M'est Comparable
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab0bb5fcd9d690910ed970b11084fd31c9de8ec5db41fdf185370926fbd38e9. 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/NLY332000778.
5 Mélodies Populaires Grecques: IV Chanson Des Cueilleuses De Lentisques
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6dcb5c2134037f4aa7891a5cc0706c2a44635e006765f02eda8c71cce33e50. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLY332000779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2a0f4e23fea260f71637c82e55fcf185a5b31b373f39f6e86c697ae2c7ac01. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLY332000781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8effef809eec114de451ed4fe08fce69ba3f8479e6bb1b2ae965c5314b67c5. 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/NLY332000784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea60841b8b62128190149ed22b7323e18dac55b896ec8fd7bd17f0142d1dc54. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLY332000785.
Sonate pour piano n. 10 en Ut majeur, K. 330 - Allegro Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95599178d25e7429a649bd24a36ce2f4d0840987a07dd81fb2b4681c214c6e74. 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/GBMEZ2456035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a74692b0fc03a1ad199c53e6b51c86707ee0a1c269b83e2f545e7930912aec1. 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/GBMEZ2456037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacb1b1e901b129ce452752f31836b1f29c607cfbfb307d263fb1c760a095362. 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/GBMEZ2456012.
5 Mélodies populaires Grecques : II. Là-bas, vers l’église
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7a48e5f75dd361291bde0e66872cc37e461970d6c6a013923ed86b2807a065. 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/GBMEZ2456038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1dc57fa6ae7495532b580ad72bd4bf834e1bb58f45e1288db501a7ba8d0cff. 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/GBMEZ2456039.