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 0x44fb3c7c296f816d2a1c3e14fc79e9de3b5c87f9cbf3b71290648dbd50e18a8c. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5093d1e5-0a4e-48c8-8ce2-7896fe293875.json and https://artists.proofprofile.net/proofs/artist/5093d1e5-0a4e-48c8-8ce2-7896fe293875.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 0xdda6e75c7496be9a9a46c2e1155cf512c57cec0b8a4c91c603a2b0d078ccb99e. 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/FRX202100787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93d116e11fea08bee62bcf76a2876572e62b6ddfbcb742829e2eadf8fbfd975. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRX202236536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5572d15d82f4aa300707b37d8a2901e8ad0f01071025e8cb9d23a7f6e0ab16. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FRX202100788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e01fe5cb527293358bf8b8f698cc7635288cd769ebd985cc3dab1282005158c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FRX202236537.
Ouverture facile (Sardines à l'huile aux pruneaux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cf17e5cec09e39e0f406ee67101f93c914601314262671f0e2127841918990. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX282055221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe241ee631df25e5763f47ae416d77c193cb6cebfe5b4b5360c8e5be50b9cdfef. 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/FRX282055222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ab550704e52d55e2447f8b12575bd9d8cc719345b243a54a2866237fb5e93e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX282055224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c62fe2fe040f996b9c774894e7fc0f3cef480492c8194e6d3a62093d35701e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX282055225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b839c17b308ecef4dfd87933276be301ad152c49674870181d2829109bde47. 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/FRX282055226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4823d6e8d946052f6b365af1f09de212072b21ba781b0e18b97e1cb2acaf0422. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FRX282055223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0602aff746dd27169fff5938ab3f0eb3cbfe835d5521a8f35fe368940d5d0305. 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/FR59R1825505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aae517ddbe576abb762367923c9e566bf665d47bb2910bcaf4728c13d6d7fed. 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/FR59R1825507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee0ce324a544d4ac178eeeec93038de9a8b09db3be13324fd78c19ede03d3b9. 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/FR59R1825509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727f22ce59e8973419e1971798cdc34d24bdf0ee0f6bfbe35941a943ba0edcb3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR59R1825511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40672d0a9ed90485842d375cc9b674519e45199a99630986a4aee7b001582a4. 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/FR59R1825513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41e5028c29387afc54186aa4115555b794bbf745e5f59314acb9697f4fae3c3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR59R1825514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada199b77b7e7692dc3aa4231e7d4da013e1bb9e1497f04d08e982875b298079. 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/FR59R1825504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb165d75524c61db8c1dc0bfb83c96b8e600000cb124775d1ae48106181d8bf05. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/FR59R1825506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe948a9c94dc1d8b6682f24db363477a9fd132841eaa57738e9a72c0853ba27dc. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FR59R1825508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6a117119827383ee0d970f642f2c7ea5e2105d22c429cb4923c529945272ac. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR59R1825510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116840654a8a47f18af3de4ad6fb8c665ceb3b11f71402f45ff1490809227aa3. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR59R1825512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d10e2b1b1bf026563e0839f973c735d93e31c586f944de86d52f65983848d70. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FR59R1825515.