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 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 0xa84f95dd98ae37215c265c972b7a9e4cb24bd608966a4686f975694669556f6c. 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/62c11737-53d1-48c1-96f1-b794902a169c.json and https://artists.proofprofile.net/proofs/artist/62c11737-53d1-48c1-96f1-b794902a169c.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 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 0x7f711b406ad045cdce7c7e29140e104469ba063fcf9228d6c827b63906cf7ff8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES7841515401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d770db2c1ff6eeed2e8b221277effc34d505d96c0c43e57572c4507af5bd27. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ES7841720302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5993b47d7b690db33d9eb2a9139748c18c8ac422a2164daa48b5e1cc2418545. 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/GBJAJ1800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0f79a44e910a0fa748e5880762562698df15ebaa55dfe88b1c1e28756285c1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES7841823802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6730fbb6ddfd78b5d18da348dc8e93b6eee4b7f4b81da495abea018b54063d71. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ES7841823803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe1f49262cb146dfafbea95098b691c0233aa9ce518b1456fec1acbd84dd3e1. 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/GBKQU2013189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdfa326b97b1331b869a95f9b0890c75b9b3b5fba7ff19edd2effcd547d01ee. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:23:41Z), 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/GBK6Y2057901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa40ed868e0a044134ae93ef02cbfed2628feddabe7a55db3ac8f9b8379af5d0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEX042000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa120fe1a165812d06437e0de3389cee85f528827a2d0471423bfd534676e2547. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBJAJ2101078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd71bd9fabcdc6372f97e900e928a50cd1cb26b829580b5b00b3b06267e19b2c. 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/GBJAJ2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc9ca54ebfdd78d7fce7f055cb33f4bf89fb464255b3dcf68f753373154a331. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBKQU2203315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e806cbd08c9846187c4c95a21b43f97092a3dd4cf1665e2933e64f83227df30. 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/GBKQU2343766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6001f9f96c1bb3c42aecda8944832d3fbf6c18eb4f1d0f373a1eae50aed2d1. 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/DEX042300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c086f44e12950068ee8b2eb5effd9108b1c09d83f41593ee442cc362b3d78b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBKQU2403663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce1fa7d34999c105ec336296cd069432e92bf5e30db3c81028044fa4fce5024. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBKQU2421466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2940f147f20633f55e8f60c00afd361a2c32f0144b022e3462bde35f7910f4b5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UK74K1400812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c75c4eeae61b5a62c80c56002989bd8187aff111b6e1fe9e4df9f9abe086a1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBKQU2483889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f79efd8f307f6509fd5a9afd630549516e75a7442508108f0cbf6035794d8e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBLV62402777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd094864d3c984d8679c85a5ad1a10bdb50fe82cc607d8641ff34a00eec941398. 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/GBKQU2575877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f676600e4d89c80ff94fe4beff88aae3bd92e42ce7270687f14b659fd85c254. 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/GBKQU2575878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513fed882c30c4ef5677576a06779985356e1e295ad69666f894a18faf43afc1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBKQU2575879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6e0281f3745335f7074085b5416fe250889e29582cb24a9dfd2fced8b35005. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBKQU2575881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b857615f6004b07aa36aedcc66379878b7bcc0b890faa7850318ebedc25757. 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/ES84B1900130.
Ibiza 2017 (Compiled by Chus & Ceballos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad8077b49b06e09fcfeb9442edea37d3a7d0c6240245d0e3c493fb219c9c3e7. 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/ES7841721201.