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 0xa7d6eb52d4f03c1def2c8c550b46f0ddb2767899c7555d8fafeef2a8b69d2e6d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a3f7192-deb0-4f19-8803-2f41d18a015c.json and https://artists.proofprofile.net/proofs/artist/9a3f7192-deb0-4f19-8803-2f41d18a015c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c026d6bbd3fb275bfb1cfd8f9c193a94619b2134da18dc781f5ad159878ab5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR6V80864980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0991fc7f7971ddcbd6a675a89bf82270a1fc5fccbc92e3d51e75fa4875f856b5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR6V80864982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb516f35521f4b9f6fc6a426fbec6870e9e15b6447dbd8e2e2ebb1d0a0dedd2. 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/FR6V80864983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea7e6f36dba2df878419c69ee2996085b2e8b2b7dc683f720274ce9b3e68cd4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR6V80864985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1426e238c82e5d93c553e78280ef03f63db9bea77a68b7b41764ff35be7720. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR6V80864990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc681a97a8608272987b874733dd3e270c2836b06573ea7ea5d4b00d66a61efd1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:44:59Z), 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/FR6V81889035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23115b6788c7006a23593464f90ae4662ccdf5ed5194182edc025de5e9a3ea40. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:06Z), 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/FR0U91204814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f46b4adeeae40c6e0ea502664413b79ea98a64dc9cd24afe50b0a24e701111a. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:50:46Z), 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/FR0U91204819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc392815587d227d99f108d25fbcf12c6c767154e60dc86773d6c61a57ae01425. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:19:33Z), 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/FR0U91204825.
Carnet de voyage d'un solda lanmou (Chapitre 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03aeb92c1fd548c618a6d847c89cd3b1889591aba42149840e0cb272ffed516. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR96X1697699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bccfd7df4514b5e855a9fc61ee9d858b233fe8edc8a373fb5b13ed8de30ab5. 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/FR59R1743096.
Carnet de voyage d'un solda lanmou (Chapitre 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43a21e2832ecddf1fd6bd6f11002376b3893e8a7037ae7bd7408fbd744d1905. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FRX281700375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99469f36aa081e2a47afb9e5662e2a4d2c783f7767c4ad64bc248d1c1e69e7dd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX281700378.
Carnet de voyage d'un solda lanmou (Chapitres 3 et 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7386225036663b220a1b6c8ce34ee861fb5bf5acc6e93966498791bbac3aec15. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR9W12317756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4280c1d802bd7ba0c15a80aa21613f2f7d6d4a065bc40c3143f2b5925a3e9aab. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR9W12317755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d008c0508c56d82f5bc72fddef6e2e36f52c35c926b96fd3235a00e38951a2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:49Z), 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/FR9W12317765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ab0863d0bab01c58914786ae4a39e244d30e3653b9c6d9dec7085a5a0e143f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR2X41533769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b44581ebc73e6d321d80701539f84dab296aafa1d88efff918832ea1dd6d0e. 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/FR6V80498944.
Zouk duo : Les plus belles combinaisons du zouk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3d2a78cc8f2befa5ce29b8d6627ed8c7b23a43fe531d124a156d5f2bba8f25. 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/GBGYQ1500036.
Le Grand Méchant Zouk : Sonjé PSE (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb5cb9f9fdb41be6db94c3d4d88b5b9ccf88626ee1a0b5140eea9da205f2458. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/FRXZI2000350.
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 0x4e2382680452212ea45b4fc29e294967a2d3b6e9a442aa83ec8a272d7b0a9d1c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/FRXZI2000470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2017ad4422375b0d89d5cb5f7af3d36b575e5bb5ad4b1ac8aa599c0bb3b35e53. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FRXZI2000240.
Caribbean Soul Session (La nouvelle scène créole)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5dd3be7d5b0734ba320766af7ceb630bdc5171791c541174487e753c1b9477d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FR6V81586633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f49f797a0d37a59907821d8f11b87dfd1347d2b83a11212a59b0a5893b79f7e. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FRW511500001.