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 0x044d6abc9d0ba9e7d0864251881b9cd81353c7b5283b503ef65bdd90f478e341. 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/0fa57d68-5d8f-44cc-b8a1-efe2618bc0e3.json and https://artists.proofprofile.net/proofs/artist/0fa57d68-5d8f-44cc-b8a1-efe2618bc0e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Je te laisserai des mots (Piano Version)
Je te laisserai des mots (Piano Slowed & Rain)
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 0x6a271626c4d25962783e7e2702f2cd8a3ae4b78ec1e9f7a1f8cbd27890e9e27c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTB82383411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6943f7ead63f20670752f0fe0245ccd22b151d333b652845a9fa906e56cc0664. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZWFN2394209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5469820a18dfe51a5e746ecc52f3bd2ffb4c16803538db2da5bccd37404a5a3. 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/QZWFN2394210.
Je te laisserai des mots - Piano Slowed & Rain Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bde51772ac134554774fd29c0c1890fce63869123d1927ad3a7a9d49e5759b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZTB72301472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc1aa1a8f59316e03c281db26dd64a9b5430e5f8abc803f4696828e1db1ad74. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ62406613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839c3a306d473151b5805d736709a315b6540411b49b448ae79abef5198ebed4. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZMEM2427338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c3cb90bf9809fa86f638469b21254ff908a950b1fe076d8ba1877b57845a50. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QZNWW2494046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d658a5b9a43976534d0aa203495c0c8ed609c332396f8d9236f742fd4cf393f. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QZWFR2471314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd646e3ad94529735f6e1ba792908af03cc6999f3d1ca8bdf29b0f2499175b4bc. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZWFR2472192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dccb461d68c4ea906fdf3494c3b156cc4c84e853c2e28725711a1b14071e5b. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZFZ32518928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b7073b78fadc8011ec03a8e7913688ed73b1b3c38c28cb3b75ab0570394193. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZES62583485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12761b4e63e5727d4fc48140c94be778f8a5c13a68e0099ad8f5427c7a030ff. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZDA72538942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3c28b18f889e13318624cedf9c2d3d47435cb27de843179ac2989ea37d962e. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZES92507545.
Je te laisserai des mots (Sped Up Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ecf16986db6ea0d6d4befbea96b020907e67e65389d6f9bff3d8b152a3a94e. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QZES92552675.
Mia & Sebastian's Theme (Slowed + Reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1302ddc7edfe26def55e1fdde8e5415bd5e87aab2ab7329e49149be7579f3a. 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/QZZ7N2505016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893c02a95eb22094fc5fc64ae6f167c2d195782e2937fbbb74515918e17640c9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFW2596534.