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 0x419071c76d0c9bd67fb2c5203b21f485f4cb172e5fea176727cbb6c18c23ea50. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e274b124-ad66-4aac-b006-065c255c6e4c.json and https://artists.proofprofile.net/proofs/artist/e274b124-ad66-4aac-b006-065c255c6e4c.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 0x963c3d1bb2f436e948008ab4570998e35077a47d72b35198832e95b673bdde20. 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/AEA2W2357949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5557d112387f8a17373656fc5d89e1bea6a7a47f6fa56220ebc84386a2b76f6. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T00:59:27Z), 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/AEA2W2357950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e1c1664bda86cac1314bb5c7e03b079c238acc09b592ebf74d89b31255473a. 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/AEA2W2357951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29346e996de3dc8a7387373622ce7a417ad725ad0b1f841e14818c482f9ced5c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:00:31Z), 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/AEA2W2357952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a76234528c70a7ab05d1521668c4143f0d82a26f252026985a695a5fae80b8. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:19:05Z), 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/AEA2W2357954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4fcb3a2e813177b8644ac75f48925e3c66e1bf797808962314c51a7b5f8439. 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/AEA2W2357955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d3dd4670f086e763163d808e75c8b6a6a10dafe3ab6ef7ac74eb76307a8936. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/AEA2W2357958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bbbc9eb43caf127118fd7e79028e303909d8640b9e82e5496209cb7304ad13. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:44:37Z), 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/AEA2W2357960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5178e271be09b1acad5ad211321ab87af46ee6e386d1be62fd3ec8bdb053980e. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:19:26Z), 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/AEA2W2357963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60c9e679ed8d97510f290520188d1572b3789f508ba27eeb6de136544ada450. 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/AEA2W2357964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52db3043edb555a90af1cef0b1f1981d61fbf920c58501697a37379a8a34731f. 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/AEA2W2357965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1786a831b0ad49d7572630563915fe2d7492211af4fabdbc350c9efb85c1c9ac. 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/AEA2W2354998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1c2078e13cf6f48975de583fb63e3cce31ec15d11c49ed0b6ae79a3e9a887f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/AEA2W2355001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3da7f1860d1689d31fabbaa5ff112ed253a8987afc7fbae77548d3ea3508c6a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/AEA2W2355016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c9962f9d2b8e431230fbddbc9ddc39bc79dcef8983b242236c22d5be15e5bd. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/AEA2W2360580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0998c4db0d7648454d18ba4a340b0974c05c72fedff113edcb936aae2f8d438d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:03:54Z), 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/AEA2W2360581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4737f103bb8008ff391cab570b9249369b028ea949563a570672e0d72f9b138c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/AEA2W2360584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc5d229d22ed36aa5a734a916505f18862d9c2dbe37cc26a91b86a3d1e235ac. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/AEA2W2360586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0fb3399f726d2caeec71677d48879b4cb0d93b5241ac3f47b706f7e1d17563. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/AEA2W2360587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58415e4699d1193761b169ba473ffba363c683117d0aecc9186d4ae6df599533. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/AEA2W2360588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad36f569a8edb3ebe65c18fc59ed260aa0a0aee8c311710b62a77871371d56a4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AEA2W2360589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba91a3f59e915d5e427f5cfe446929875858a307c271f4b5998b2557932084e3. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/AEA2W2360590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aaa49252949866aba534af3694c7a741e1f47d1956c94558521d7ac39b4e4e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:53:33Z), 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/AEA2W2360591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11804852a3869149d893e542430959cbc581738f9d14cb2b8bda154f699b9cc0. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:01:55Z), 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/AEA2W2360592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57d4f7d1ec1831945913dde7de3b1671bf15fa3352c4e994bdaa9f9d08964e4. 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/AEA2W2360593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faa56ae1944d101729153b1c07963e4994c28304d8dd6ddcd167de2933e3568. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/AEA2W2360594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70fc649f3ead5b316134b99c083dc733178b135c6a1c01c79df1fece45ead5a. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:24:22Z), 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/AEA2W2360596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049d544fef444aa5a8377e9d9cf534e5a04f24f3c370c0053d7530f911c7fef9. 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/AEA2W2360597.