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 0x53264d54f385d7283dee89a28e1a90875bc5594b77d937e4e21eb7d67ea45dea. 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/f29d8e7d-365a-4f55-b67a-5c11a4782a02.json and https://artists.proofprofile.net/proofs/artist/f29d8e7d-365a-4f55-b67a-5c11a4782a02.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 0xeb5359ec7d8e1170c56abb4119a06b454d5535168d5ae3982936d3b2c9b72e22. 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/DGA062408565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b37f167963836a8d3737c4bfb1a03153697acdfb26c781c1a147289a35a5a1a. 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/FR59R2467658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa806c42f79d4c65eee961a8d950ef4839e42b5e371f55f4017f97009b69a6c00. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA092493120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2d730aaba6e7f61e87020e93a674201187d1c19fa4c9d0ecf64ba5f55ed995. 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/DGA092493121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9066565c98c010ec63d1f5e48189be138efdde33855841dc542ab8f17c659fc3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA082478110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8705701ecb71bd23df4087aae46b1b5458aec69662360502956d0e9b319099ed. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA092493122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed15942ec63e61d17771adbcf207f53c7d890a5c6571a2c6d5c31e68a7fa31c2. 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/DGA092493123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92fc0788d1902e4f44496aa8122754ac41e338198e51e59a493a64f1871e6b9. 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/DGA092493124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05a2c1837619e938fcbf244f7664e45cf0e3e52bec06a68873ca13403f5e628. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA092493125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb6bb446081f994dd9b6483b9d313bf67fbd52592fa0256bc57851222b260dd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA092493126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d25f3be5f3b3a717296882a90c24c43ce2c8f520dd1a6b317065aa3f3e82559. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA092493127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5610fbc986994ab77c0ea608dcb4d613d49fcdcf073d9323086a4e7693f43272. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA092493128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0698ab06a238c76b32cf721d5d67c47be35adb4c52acc4bf7174817f562198. 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/DGA092493129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2166a63a3abc61f27b7dd43bcdc8aca76ed0a939408938d0a5c3274265262ad2. 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/DGA092493130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b37f167963836a8d3737c4bfb1a03153697acdfb26c781c1a147289a35a5a1a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R2467658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd33f4fe58c937fc356c863cd3db9b4ad8fc178f2846457c76334c0d9be73d92. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2305042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5359ec7d8e1170c56abb4119a06b454d5535168d5ae3982936d3b2c9b72e22. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA062408565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2369cdc16ed7ca60223558e446ff534aef9b30cf30621ed9d8a5132b3af108b. 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/DGA0P2385283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6aa85cbf9fd6360aca0d4fa632ef02468f593cfd0bdb22f5d86b214cdb3ac8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0P2385284.