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 0xbcd1a114856d2b6c7d2fb5f05b8c230205f6608898579e19174b6558eb97fda3. 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/66b8bd90-9c8c-4f41-bdb9-fa03bc8f2a37.json and https://artists.proofprofile.net/proofs/artist/66b8bd90-9c8c-4f41-bdb9-fa03bc8f2a37.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 0x5e923df6ce3a4051d326e661c7b3aafd8b39bbaa2fa58f2cc622331641136f09. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/EGA1K1827487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcadbdf580abb9975a8299edad7f02bbbf937d4949ae8fb6266558c05bdf995. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/FR6V82041627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0021daa23f6c11aaec8f7d7fdc2b827f4bf13d0a84c5d805a1bc1bd3ae7f7ca1. 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/EGA1K1827527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f9d0178e702f4cea9791ed93ea81a44aaf7d6d48fb2a3f4d7b449d14897c22. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/EGA1K1827532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cd875f16701921da63ae1bccd595418c8666fdc988b351392fa794c84aad2f. 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/FR6V82041656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e02f0b1aa7313e66dc22167a92229e8a3c5ff91d2d364e35907fd2668493bea. 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/FR6V82041652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb178051ab76cb985971e1d924ca5e416ac2a7f1f4194b560ff580c4cc5252633. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:43:28Z), 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/EGA1K1827530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc68689dda874b893a0acd41640def1a443f4181b86f7c1f9fdcd309bd01747. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:24Z), 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/EGA1K1827535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f42e44cc061e3e290672b4809a2b291f6f34704b1ee9360b09216944ea8c8a. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:30:45Z), 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/FR6V82041614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c1880324bb8e40617e0c8ee2d088be23df220ea9e986c9b97bc126ad8a86ef. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:44:38Z), 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/EGA1K1827481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb69eaa7a8ba5bae8472a972ce9a35fd37c72329a4a1fa4e6e6f33a520ceedb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/EGA1K1827508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4414c72ca62b587210a11871507b0c50176d028c2d6b4ced6c8ecfbed74b2d3. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/FR6V82041644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ab2af6b0c9d852ec114134b8a6dafb15a69643c4c2d1a2590d170d31cb7b41. 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/EGA1K1827509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451ddb68b3112a4021b887b4585780a06bd03f58db1d7030726f89fdb49a6d48. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR6V82041643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c321051f9e7be948974fe8e6344088d2d605c92b8437c2b6ddc1a815a1fe03. 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/EGA1K1827495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7378cdf9929d7b2dc3ebfa23d065002964ac38c9fcbfc2de5636caf89a0085b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/EGA1K1827497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e590089c5779622b68c0d69d9189c053bb8f6ae174ed718dcdd0d79e9293ee7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/EGA1K1827494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f60fbbb38c16619c1cacc21eeb8d0087df539881a07cba7c608cb77b76ebef9. 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/FR6V82041649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3066033c24fffcf479a6b355ac082212cf79f8ce62023f08a65cb781b4015474. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR6V82041651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71232d5f146fa07fd8fb35da8743237a4bf92cdcaf5afa0555d4a62e526a0647. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:39:48Z), 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/EGA251612925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cf9a3f7c628fca94379bd79a55c3acf18afcc8ddfd07fa446f736426c5ef85. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/FR6V82041648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6296adcff67c97eab50c0c05246b068034a3469c98e8a72f0fd4ba68ff6365. 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/FR6V82041646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed8ab69542a9e7bb21929516b66d59753c34a501f540d59c6a26825ad8cf372. 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/EGA252008923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf070c55215d8b193708a45af4ef3eae10829ab95f240185fbe0d752fa1e21e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/EGA1K1840884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efe6d0588da00e62b41bb60e3304db84833a335feccba93d522b7b93b69ce2b. 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/EGA1K1840879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b2d7e15bb71a0a14a0e3bef9a480343a07565cceda663468887fef4e86a70a. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/EGA252010398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eacaeab331ece25ae2255be65f5b53083c8d6ca924c1c81659df5c3082bab27. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/EGA252010381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1b9d31544efdb857529ad7c7de25bf4fefef265ff3bc5b3831432072cf2a64. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/EGA252010013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81562ad6eb90a8b347e88a4cc2806017766f04f0e67e2bf36951bcc381b4476a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/EGA252009403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a27d2255ce6b48fffb4845fa23402ed308dede363565b4e87b51bc152ddd0a. 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/EGA1K2203053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9845fe7928883db19ca86b786cfde5fda0d088891f968f4e839fc9177b0cdc5b. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:00Z), 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/EGA1K2203554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc07743b610034f78d6af4ff39a7fe0409c0cb68f425f619cbe6a48df072cb5e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/EGA1K2301410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981fc0146bc6e948324caf7ac9f7791c6cd6b410520e4d2ef200b4319570a751. 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/EGA1K2301878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0626e16dff9a2cf087a8c15b1d3fe815fd0888cd204994fc108c2ce001fc7bc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/EGA1K2402470.