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 0x06a90585f1ae828abed40fe9d5b9988600597138365877d702d43d6d7558e5ba. 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/d59be634-2494-4245-8fe6-a12ea2274052.json and https://artists.proofprofile.net/proofs/artist/d59be634-2494-4245-8fe6-a12ea2274052.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 0x13889d29b62fdd919e934c000518dd120f6e86cddf6e8c16ca284631e5a375e0. 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/FR59R2285074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c1a2f5105454a7acd015a0b76a639b1672d5711165cb197d0c523e92a7c207. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:14Z), 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/ING501802276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80978268a861c4d957684ca6d277e041fd0eb44215ddaf3cc271f3512613646. 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/QM6N22182177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527bcf60ac696a64342c7b2b0ba9759430a4fe1badec5bf75f798601f115ef37. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:13Z), 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/FR96X2272026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ccbd4048d4568fca7c75852447358c92bcca647d48bcfad4699e6057f0dfd5. 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/FR59R2285084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf600ec1815557b3ca85440fae543a3ea489b2b6b6ed4b5b6deb7d0546caecc8c. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FR96X2269667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ecbd3dec697aa7ec924bd75814e8e088ff3a97a314f0552cf1d5897fa90071. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:51:57Z), 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/TCAFZ2258707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c602945bb9d0dd656e46e0fd289f5f67615b8817aadde65c3ece31e226cfbc. 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/FR96X2260217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadef1ef5de8e0e3c58d23fe8953a4f74d97eab2f67b6b4d133df164ce3a9ca4f. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:47:45Z), 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/FRX282246725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f023567bf94ee42dc409a6a70f535e7da37560debd4d9439fe2034176d2f7be. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FRX202229046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a33d103240448d87ee81cb3ebe9f0a4dc8e946cf346ab7c81084e95b896d16. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FRX762236593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf19dd4180573ee9f544f78e9a45d3fc9579a056ae18ef7b4e3fbd6696ccc5e0. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/FR2X42380930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c137639d56658169059c78f1df518f4177dc08262ec567030f2584c37044ae. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DGA072463074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df7b3b3b0321a4481d20770fdb3cdde9d37087737e156f1a9490569845ccdef. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DGA0L2495569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7e95cb43e4ec87b942d435e2ed3a46f9b20558924d9a48732c58fe5d434c3f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR10S2553712.