1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa5471b28e9480696aec718867f7e6404022d10462d87d28d3ee31d584b3451e2. 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/4dc31d45-e969-4b38-8a7b-7253c9d68b47.json and https://artists.proofprofile.net/proofs/artist/4dc31d45-e969-4b38-8a7b-7253c9d68b47.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 → block OTSBitcoinBlock must exist at that height 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 0x130c8692ddec83f7b8f8993798441fff0041fa58476b4df1c634c173ef542958. 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/QZES72464365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650788489442e5eef9c8fa3ff5200ba3d3127044f49f572a79e3e097a261e806. 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/QZES72464368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab1abcc3419e16aa5b5fd309865a2c1794c9779cf816eaa94ea3ce4ff98cf7b. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:57:01Z), 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/QZES72464370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc767948de9cd97ebf1e4a2cb207edac0502ea8b91440b4ae38665f2d02f63810. 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/QZES72464372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf799630b3e5b3a8cf51791b458d887f45facfdf6fe449665d9ed9d53d14b82. 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/QZES92438981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38ac5f70815fc1f84640e9f02997fbd91a85d8c4491af2425e2604f699a3781. 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/QZES92438985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884d6dddd837323dacfb029b39d795a07d9ffa3dd98e102ba8151c8ff9157247. 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/QZES92438986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9c13d7634995387a7a8cad669d05b90136903bf96f04d9d27f35a2a527dddb. 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/QZES92438988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a56218d706cddb387d105053c74a483bdb6ca2b3873e27d1683dcf5f28b6ded. 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/QZES92439524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58abadb8579a3c501ab48af5b86c58373202790922ec74bac099dab6901337fb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZES92439525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ed3bd85a5e9b8c63a9dfaae4bce8974b7e76244605277adae7fca68215007d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZES92439526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f66ff4d8f675e958ecd30dda7a80fcb4d043c0ef337f981a6c1f8ed7a620167. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:26Z), 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/QZES92439527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7812bafd6c63e1613ed0a095e2d1045f1dbb1f3ba5f03b782bbbb5127bc28a20. 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/QZES92439528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2936eece525d2d34014631aa85609d874b7733c2c08a26528b786cb6ae63e82. 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/QZES92439530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb2d939c80a2e5135090bd654b30c1eec6ccffcb3910eadfa426e503f5b7c0f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZES92439531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54fd49f6e20ad95226e6ca33eef879ece02cfd281f34cdc0fc4f1ae58d332a9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6G2577634.