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 0x4a6d213f390e25516044a86b7763b31283b79953ddbacb89d72b981424d79382. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9dc8fdb-a207-4dea-89eb-f38bfad6b857.json and https://artists.proofprofile.net/proofs/artist/b9dc8fdb-a207-4dea-89eb-f38bfad6b857.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 0xbd4e15ba77a624e15fcf6081a3cf2bd403e86bb0c9be5f91958f5239f4deeb6b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTAU2366577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe584f77a5189a82e8afe9d608c2999b74fc604e5a55988fd0653b9ed16f831f5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTAS2427231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18677de2de3e49e83db06c53f1b753f9e333fd6048f2f408c2917587647f6468. 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/QZZ7K2459483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0386ce950a6ae69de5c52ad92f34fbb86ee6461bff29ec462be1ca11929ad4b6. 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/QZZ7K2459484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996c3483931b4b53ccceea7ae32c6b1955e931d0e966d2dfde2ba735dff282ad. 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/QZZ7K2459485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5ad8d877d524e6b827047abbe6fd786f74aeac462264c8404e6b218d04d8e3. 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/QZZ7K2459486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcb362d1239c87178f18d0c623f4727ea91137101d773b19f692e9501bff0a5. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ7K2459487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fe117495d782edd3114cff806e0a7ea5b03ecca61b355d4c74c1a9fd09f2bc. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/QZZ7K2459489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbf7445d552baf13e9d19d89917f82cfe0ced3e01c0d886cf458f7b4b464d6f. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QT3EZ2484071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce21ccbe0070a6467b2bed51a4dbb44ada48b5dc14d3f964812af00659ccc24. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6H2528372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e405a5072c3ad363f41733a1dd1ec56365c94d6f2899d5f7128aec232cbeb7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZK6H2528373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319b1708ea77167043e51995d8d460d8cf2b2994f8ed234254da81ed9be348d0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:45:18Z), 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/QZK6H2528374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754d07397b8ca876dba69db6cb827239df7ce8234f2fb6521aec0f201e2d2a7b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6H2528375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabefbca67c7122e5da4e6e83ed905aead85de5f8312dbd5b818c0b2579122b8b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6H2528376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee67eace0229e7dd837b819554d36553a6088d733c1ffc2595e1f2fdb170ce8. 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/QZK6H2528377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c43d238dfcb8ce7cc45ea03608557e93cbaeca37a3a8601fb4c0e3a6b6731d. 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/QZK6H2528378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d101d9d54ff4495d24250af972c8eca7d55fc2a5225e334dd47c76d9f48fe8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6H2528380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4c7883766d29186e89b7e111e4c0829c7659b2b894cc280bc2c37ca6a5d641. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNWX2591618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2979391976e683ea36a0b84878e49cb7d4b5d6796398aed80a4e5067d9c8cad. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:39:35Z), 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/QZWFV2519028.