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 0xed6d23a3f255fbc7cabf12d8a50370686e7bac0eb340665d3ee3ef7470eef774. 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/3a580f80-02ba-48a0-b9bf-31ba3381f3b2.json and https://artists.proofprofile.net/proofs/artist/3a580f80-02ba-48a0-b9bf-31ba3381f3b2.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 0x356cb99b12f48a8b04d82cf251f8d60f62a1a853825c21fc94e69bbc75f864e5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR9DT1900260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbfac5a78b5bcdd380a3f32371367356e50d71ebc682d753b0f74e1175a8249. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR9DT2000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47065af3648fd695e298e83df18869d38a7aadb187d3ef59c873fac03f5ded66. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FR9DT2000410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbfe03fb998c909c04b6cb7c72c5cad5bba677f320a4ddeed8756df12790919. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FR9DT2000540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe0996b18936dada1cd9dd378d609eaa98764bc6cff74f0cdb2825371459afd. 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/FR9DT2000550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d37b166d7177d5a5acdb7155a511d8e75aa2f08d8b2fc9a83fc6d2df0f53c2. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FR9DT2100430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927061f243a68482a47e8e1317c24471c462bc3582d744a0e45030e95cbc88d6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRDT22000180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf8388efe2d2559fc02bf5f66c15d957476b36e0b56dbe495db53c9431a9b0e. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR9DT2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df254bb6f59974f15e8e159d22d11abb7a40b7aeb71b430b08cc409cc18ca7e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9DT2200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1dc97891b95c783124c2eda0e7552e2d9827d7fd630ea08c1acb22c244f173. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR9DT2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec4b4cfc17dfb0be34e2f47929227fda463c229e4b926f7b72572211a1f8d40. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/FR9DT2200130.
PAS LA PEINE (Version du film "Respire")
PAS LA PEINE - Version du film "Respire"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64cede53149098c6bc1902f797ac5b71f039c8a2a2a81c031ec5f1619d673dc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR9DT2300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900ee3b3fc619e1faead123e1eca3437effd4374d06b775803e76f79fcf7ca10. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/FR9DT2300560.