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 0x1479dd1103599a05c075af4acb97df76b468f2fa1f4ad2aa6c6b26e89d5bef5e. 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/e65bb995-1ef1-4746-93bf-bd174df3b55c.json and https://artists.proofprofile.net/proofs/artist/e65bb995-1ef1-4746-93bf-bd174df3b55c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Alors, on danse ? (Transcr. for Three Marimbas)
Suite pour trois violes: II. Allemande - Transcr. for Three Marimbas
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 0x397bbf3e11a94313e9dcca0796b3a169aa1b937f42f1c019552b5658b07a1e99. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FR7KS1701001.
Gavotta in D Minor, K. 64 - Transcr. for Three Marimbas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb56dbf2684f5011ae67566499d02befe0022740a182461ca95102da118dbd9a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR7KS1701003.
Vingt pièces pour clavier: No. 13, Menuet - Transcr. for Three Marimbas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff59e30db3725aa668d60e440a035d9b0daef95101849f0f55ea8b66ea2dbbab. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FR7KS1701006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36695ef61cbd0fd7d35551603c5aa012d914a97c9ef72ef6c28d637d5917611c. 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/FR7KS2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfde20e0b61c53f11ebea90b28d19fafd658cb938806f64be4e53073336f469. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:52:09Z), 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/FR7KS2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d375ad59160402064982529c14359053349af9fc4dcfb69853836d58308c9e1. 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/FR7KS2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0303251e40badda5d78a771d691c2d2f15b338c186d91899c84d3c3456ca7424. 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/FR7KS2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7023865fdfb558cdacf1a7c83d30f385e7b20b60353902201e36adf9ffbfb355. 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/FR7KS2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36695ef61cbd0fd7d35551603c5aa012d914a97c9ef72ef6c28d637d5917611c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR7KS2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfde20e0b61c53f11ebea90b28d19fafd658cb938806f64be4e53073336f469. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR7KS2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173ddf759777260ccaad3fbe3928b28f79cc01c98bbccaa4c39c732ae3ed99c8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR7KS2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a91cffbce5ef07d41a6bb972e0dd16eb5b3137f7af158ebac8b353cbd7e3800. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR7KS2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0303251e40badda5d78a771d691c2d2f15b338c186d91899c84d3c3456ca7424. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR7KS2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7023865fdfb558cdacf1a7c83d30f385e7b20b60353902201e36adf9ffbfb355. 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/FR7KS2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bd0869f9a34e94cc0cf3f779ae4b43bba1eea5fd3e643db815a07b56fc5f02. 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/FR7KS2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22b9250f1532055ff722a11084c381c7ac1edf744301ca48dc8b7aba8666b85. 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/FR7KS2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135ad1a5edcb49eea0c5131f9f1b7ddfb43c8998c35a2068292e04452f9b253d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR7KS2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039ef8da22dc995c263d05d7504d71621f958affb0b859752383f3adead6aea0. 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/FR7KS2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4432a6ba80acbafed9ece532cc5accda4e06fe77236f992aca7ede65a9a07195. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12434786.