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 0xa3b23fb96f47bfdad07f5638e0310bc0efc6e5aea634e612e41f96c2f6e13b30. 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/01eca4a5-8cc2-4cf8-bbb8-4b2418b7a04a.json and https://artists.proofprofile.net/proofs/artist/01eca4a5-8cc2-4cf8-bbb8-4b2418b7a04a.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 0x6352b24a2493fe1de9951dcfa85bcd508f67fd4924d63147dcc84193f55d4681. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAJE2451676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403948e343a06607b27f8665c0409e79327dc0e7a323b64546536346ced000e5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DELO20911902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c2304708bf6c09a814fa2045d1d77f3a6091e7f76f85526d491b874a754104. 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/USUYG1143034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12326d0c12681885929208b48b3b60e7355f7fef58f53e0aa2212b4c0b865c72. 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/USUYG1124269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363786471fde4f5d04cf9ee2d826a63cb9a48310e88191dcea6696b649133197. 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/USUM71603747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd3f00758f76282477f2c47911e5fa02afea751cb68b931429a2ed4e8029d9. 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/USUM71414117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e386fa6c7892c1c294b72689d837ad09464aff79dfffd7270d36b58e3bdb1d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUM71312346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f22f4ad80d93f9fbc65f8167e70dda9883835ccb52e6c5159b4398bd0f4eee0. 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/USUM71319306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9be1f61382557e45a64025682b5fa585bac3c479a9d2d4d9887cfa7a8f62b97. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDJ20400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dba6339d28ca6dc94141dff0933b2253e325accef7c4aaa152d76e501885e5e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USDJ20500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd3f00758f76282477f2c47911e5fa02afea751cb68b931429a2ed4e8029d9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USUM71414117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4aa164f5668d0a111da746f476cbe51cca733ec3dab24479f92e6c32494cc8. 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/USUR10301221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa803060fb2ce98e4922c0757802f5e61cd97ad1a97485aa82732fc53fd39c28b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USDJ20010250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8685973eff571a14b157e003ff99912cc5a93838f76de6f24d03ce6c776a419. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBUM70908662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608b84843911a31d8461d56e77859a279cb35f9aadec561a32509baa45833c40. 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/USMC19752489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6334c3f378ce6e645ebb42ebb0a7813ea5e788fdcc30db5c1b88a4e1f569c1. 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/USUM71317975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fc114c1c371ee2276260955d87bc0d012e8b0687a7cdcd04f835ef77cc89ff. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USUM71517405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7a1e7d22cad599662b0844cf6ad33054e8818e973657a2fc4a0c16973b7045. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZ85M2036651.
Les plus beaux slows de l'île Maurice, vol. 1