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 0x0d9797eb83ec762c81f5a56ee470af594ec0c1ac93abb8174ec87a0a84257ab2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78808731-2c95-4755-8f56-46ba6d433c27.json and https://artists.proofprofile.net/proofs/artist/78808731-2c95-4755-8f56-46ba6d433c27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xed054a135fbc583e97e9fc80c23fcbd000e0f0b39a5660c732a29b0090bd41fd. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/FRDBL1900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938c00ae48f584bdb53c81b73279b84ce56d096cf1b06d65790afa3528402cb7. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/FRDBL1900180.
Avec toi (feat. Lola Le Lann) [Live Session at la Boule Noire, Paris]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fec603e16c39d8f3ffc39974aea60a570cd668d2fff30ecd59ec40cff1508f. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FRDBL1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b59bc5d76ec4e8453f18cf4b97fcd21a155b806349526666ed1c0a5937fdc1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRDBL1900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e3498dbe2eb753fde3a2f245f662e16d712675250010b1a0ec643b6dd47b72. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRDBL1900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149871d28aa011f8ddf4a62e082130c6a3662ed2c2991b5b1ca0edee6053dd9f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRDBL1900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4470c0be9e507302fa7a3d5d5aaa87db8c772889a40f8bacb3f5e1e5505b5223. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/FRDBL1900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931e7df1621bffd207be6d421b71b4006e6d85ca36e6c5f1e5cc6b6b4076a1bf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRDBL1900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff33e4e4960225a5ebae262acb08a1e8ca9f2d9b0c19f1f4b5f3393f2bbee47. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRDBL1900250.
Avec toi (feat. Lola Le Lann) [Montmartre Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea7be348b3c34c1eebf5b8f9b2cd87840c1d599272db8af77360529f018cc29. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FRDBL1900310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9e1db1b4118357024f2a5db4e552f026c2280a8c0fe0ca4fe1731b412a269f. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FRDBL1900350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b2e8226256c9e31738ad9317c84ed362ab3b0c553245ed059fad66a5836b54. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRDBL1900380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3313350702f2d6ef542b5823e8b8bd03ba2acb6eac4f6fd7012691b7c61da18a. 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/FRDBL1900370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b2e8226256c9e31738ad9317c84ed362ab3b0c553245ed059fad66a5836b54. 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/FRDBL1900380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa9f3845a2d87f458959ac870c30bdbae120ad109562feace02fee468cdeeb4. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/FRDBL1900390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6d2e81490972570a913ddd6773243be6dd1a3d4bf63c4126c0b1c2d118fe60. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/FRDBL1900400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5f06f1bb11feefb1e3578b6306a9b7036287b3d6edd9afd5b072bf27a1ffb2. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRDBL1900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4cf46932bbbd570c110477821001ab88eff3a73a71a571e2fb010c5c37329c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/FRDBL1900430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2219f03b2ef2aea849e1dfa3940e159bd62922675cffef855f2216d6946e055. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FRDBL1900520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0a3fe3278b19261b6ffbb78b6ee687c92730fa03d392ba3596befa9ef4e902. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRDBL1900530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb8e27da2b6353fe6d418ccfa7c6448b99cd14ea70f23cc3ad84ecc9c2e9928. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FRDBL1900540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150764883507e8f4957bcda681a1986d3207fc02a9f93ef7d811a9987ed98e84. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRDBL1900550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cc69713bd46bd1ca822ffb5e8aa15af5bb8bc2e8ca799541c312b618f5b80a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FRDBL1900580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d60a587b5e221fbbc8ecb273974fac4b3c7326ae1437b872f391dbaaeebc8f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/FRDBL1900640.