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 0xd030366683ce1146b7baab22f2dedb2a3e37467bce8e1cdf2c22346a25491f6d. 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/443a1fe9-bc8b-4ff4-9d38-28222a11020e.json and https://artists.proofprofile.net/proofs/artist/443a1fe9-bc8b-4ff4-9d38-28222a11020e.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 0x0991061b51631447185c350f2c5270a49b234dcd5024b659d5a4f0cbcdef7cba. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BE27E0201130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbb30dc3f1307a810922189d328687fe7dcc640e71a544129a486d866df45e4. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:34Z), 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/BE27E0201170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ce835cfd3b01d306edc7dbc8d07421765ec0a0a7612b8ee73d04b114a8b89b. 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/BE27E0201220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517ff916eac66dd7edbe6307034a0c13bdfeb77057b6aabddf415a62a9ace090. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BE27E0201240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d0968041189368d99c20bb3876ccfa06bd299c7c58a4e23b5d9a17ede5eac8. 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/BE27E0201250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a303b364e70459206bd3370777bb8096821a901eb9557888927f6d6674787a0. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T03:24:35Z), 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/BE27E0500410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf507baa862ef27c124597d39a7b043a9de16c88afbe8942bb7e29e2457a92d62. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BE27E1200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7a7fef37ea2432a8cfb935a2cc687916fac810a95eb675ab0d7dc92a9718c1. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/BE27E1200420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe139dfe27f0a9d4e70c8033e0bf4fc0f1a938a10e8b0e4a82fac386daa41c6ae. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/BEO321400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c75ec5542dee01e2b9625626dd437847dbdbbcfac8bff320682b5743363fc8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BEO321400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0713ff833e30c5e34c8bbe0fbb9915b6c439971a66e6a9059bf3e3080d29be2. 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/BEO321400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbfd5a0c5216ac9d5056e0880b13c0bc056f846aca4872c4655be7310dd8b74. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BEO321400007.
Bonjour tout va bien (Le meilleur des demenageurs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0da9b7832c288895dff8b459195b29a4c1657bd0b976677e224acdc9706edba. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BE27E0201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d6fbe6dddc5e86d6a590c21b18c5aad3e8e28fab0eb89b5f36a0e78bc79287. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BE27E0500470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960791de4f441e1eb12a14c98667213685ab1a42fb42f0d5a7a890331b1cd4ab. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BE27E1200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3de714e73adce8854e0d9d47db35c75ca667631aceb1c25e4d73f7e81c654f5. 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/BEO320800001.