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 0x449634e6a93f21b4b479b0031435ef08e4e34dc2b42419f0a74f0f23e7803caa. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03a60a92-6497-411a-9fcf-26bf47d22b27.json and https://artists.proofprofile.net/proofs/artist/03a60a92-6497-411a-9fcf-26bf47d22b27.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 0x9ea706f5dd971db307545110b4f2ca22cb6294a8d03fedd9702a410525c76bca. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:33:20Z), 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/CAENV2472459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2584f712a2827f2845d60b56615e0bc684ccb029dd5c722c9fd0cc7b51249b09. 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/CAENV2472463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e968c7cceb3276b34b0af8525b5790e620dec949075519cacef4debdad6430. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAENV2472461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecaf598312b1c5452db4abc29b4702433e7beb7493a0592e7790d39813c0d6e8. 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/CAENV2472464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5966d706b99f530f7a3c74dd722c76400c288fcd185c7a01d7ab40f0b5e3c049. 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/CAENV2472462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa21e1f2352e3a2affc560d80b2df2713a68fea8e4e8c472a60f41887eeff7d0. 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/CAENV2472460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8547e6f1b9587766b0320871ad30df6cd84d4269503bbaa1ab56b660575f10ce. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CAENV2472467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97beb8307a7cd5a96771ec5ecd2f16ba5d44105d2169e6e0506d0e20f2378240. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAGOO2490403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40533622be06a7176809ef4e765a67945ae21bf4ce34168edf0dc5a25a111a6a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAGOO2490406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78aa89c777edab8e7040473c23aefc8b361d08bfa3c804c4598ca8c079a9bee. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:00:07Z), 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/CAGOO2490408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2474e5184330b80d7715517f201d752c50af84f0a67ec2b3c4837d8b2ee529. 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/CAGOO2490410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bb61771eadeec5bb985629701676f0186098e7f9cad94a75773f3e29e8119a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAGOO2490413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7678c76eccd38d527ccc656d5c7d8ac1e8864dc2944b9961896be293d6e577. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:52:51Z), 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/CAGOO2490414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cba3b7f08f9103690add757f7cd7c8c78a8378b9c1839afa4516210e74ef86b. 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/CBEYJ2453793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c96baa21d0875b9f30a8e333e062aa0f191b60ffd940946a070d38f5f12ea8. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:38Z), 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/CBEYJ2453789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c5a450afb732a981038c8162fa8b5ffd9b3af3e121f9e728dcccc6691c7730. 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/CBEYJ2453787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70855e4681a8bd0a702282c94b6fc81b58b0e00c075fbcf3a400540c3ae1eb2d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CBEYJ2453788.