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 0x832e574bd5bc9a06d15c2490121bdddaa01c0ed43c1e6bdca0a2b4edfe623e4b. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e9e0491-8afb-4681-8e69-121ec41f7889.json and https://artists.proofprofile.net/proofs/artist/3e9e0491-8afb-4681-8e69-121ec41f7889.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 0xf7522e1dfedaf321b9178967256a77893c971a599bc13fb2fa81d69cec96c7e0. 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/DGA0R2465147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e2746c74788e8da9e9aef436c909aef2751516fb6f4f81f03db0d4e68d4c2d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR10S2532580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f832eab37ca7ec8ee150b63172e66e8020ff1fcf833842e1fc0fe25ca211b8e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FRX282513881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea3211db17f72bcdf5a7a3c5e92a9324242b3420d4b8410aa2d574833eb4bd8. 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/FRX282513882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7522e1dfedaf321b9178967256a77893c971a599bc13fb2fa81d69cec96c7e0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0R2465147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2042a7d7d1ed3d76001a6c674d3280fe88bde80c973b6fd4d76cdf1b0d4bad0a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX282513883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee158c1e05c8eafd86654997c8e77be53977fd27cd8cc87411854a3dd77e820. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FRX282513884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc9b2328edb713fe9c5655493a7a1c3e65e9075aab4db538dd78873df1ededa. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:15:53Z), 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/FRX282513885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d9a6c1af5054f5d3f77a5f773e284c24a56e315dc393ee710a0bf7c917d24c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:22Z), 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/FRX282513886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258b87f6e6415c2f36a4643d0fe7e890ae6f231fdeab9dd840cb22995329ce8d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX282513887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754957efb359a7da9fcc8e9caeb53bbc1a5db9e2b276be06e412c1e195431cc5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX282513889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe093e1298668f18ae854cd8251bf072b969adda3195adfe8669336f5d0d9920e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:29:21Z), 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/FRX282513890.