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 0x06ac0d5192571ffd419ef825222b142699ea7c3d537139432f1e9e969d2d691d. 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/09ebb8f9-c976-403d-8509-3f22016f3736.json and https://artists.proofprofile.net/proofs/artist/09ebb8f9-c976-403d-8509-3f22016f3736.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 0xdf0ab0e68b96754c9a53e79c04d1e536eb89e2cd2b8143f967396714f9ec15fd. 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/DEXN82331398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa28984c52316ef6fb669e9e2bbb58a0ca6eaeea7abb139aa29822e21b73c8f6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ESA122487945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776b507552185c39367a94c31b76c87a7f9d2958ea8e87b2cad89d827649c9d1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ATR981329630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d879ba76401decf1af5c6ba498d19669070e1431d4fe0a9007d1cb29679953. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ATR981332227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff58712374dbfeb454cad593c2ef28f6710ef2e7a7e9cbc1084217decdef5f6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ATR981334570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336376b469dbeee7e24570ec5ead2ac8585b9daffb8e86a46e9c47e94d75dab6. 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/ATR981336003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe804d91cda4d5229b0a04a4ca146d2931a5c47354c0b635a6d0bf73af7182f00. 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/ATR981338273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea5de69e1e915caaefdba38af2de1a7253bbc93ee67e8a4ad95372aebd72698. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ATR981338274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf623f801bfe50985ba28992e84a99b3f6b5921413ccc03d9c642b07edd6661c0. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/ATR981341161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24420e485772b5a3fb3a0049b809bbbf49b82c4ccd0c1b14cb4c78b74b7b2b12. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:01:54Z), 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/ATR981341597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236e7e4618ac1e461b6bff71c39fcec41a36f5b69dbfac76e2290e6d04aab469. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ATR981342085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe949b1a4b66d91e808929cead302eb52ba6e1907ee4810336e6e3858c61feadc. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ATR981342396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a34dbb7a841cee636079ebafabcc97ae718fac291360857ae9e9f9fdfc4a27a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:20Z), 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/ATR981342973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafe04aff087534df31a677f64a43c0c37b518b46943862884e409ff0a52a740. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/ATR981343208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e74b1079255d25122a014481a6290c52b8ff72d16657d31df4cda5da81cf39. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:38Z), 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/ATR981343612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cb5d31a85f9d46f3877327f53c2af25e9fa00f344a36e4d1af2470728fac8d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:35Z), 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/ATR981343820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99dc11438c4bed6c7f9c468ba4d84c1d21f764a6ef19e5cc3f24cd1c8e06546. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:46:41Z), 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/ATR981344909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b50b3a19f81205a024f01bc2ba94ff1cae190063255a96a529bc97127b478e6. 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/ATR981345041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17e60b6f29a82ade4bbc20db363211a05413790cfc84e98acc27f8094958568. 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/ATR981345639.