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 0x8af13fcc5065fcafda79b96766cf3b6ea6059f9bcb8b05ed7464f2e18bc221e8. 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/989eb864-8cb2-45e8-81be-ddf952951c3b.json and https://artists.proofprofile.net/proofs/artist/989eb864-8cb2-45e8-81be-ddf952951c3b.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 0x3ea25f3660bd89a7ec744dea6a76bfae7ab5e948dd076cf9eecc6a82c0b00e6a. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:26:58Z), 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/ARA9P1300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ed0e7dd9e6f346d383cf4fa964d08aa98693be7ebf2d54e94312b832e0d4c6. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/ARA9P1300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e990a67e5fce60a6a6f6cf8e0155fc8dc706ec04cc8d7a8d1e16737d47faafc. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:38:11Z), 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/GBSMU6751672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb0d6680d8e0be457f6404e8bef6d09ba14340a13e52366d0b91f2009e02c64. 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/GBSMU6751676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0db18cf9bfc671dfc1a2ffd6373a903455d0499b89d0ecbd24ef05c3a96903. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:34:40Z), 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/GBSMU4118997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013d96aea45116f5e130835b7dfaa061670f850374507670bcb693862a3136d3. 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/GBSMU4119005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37aaf643d885690d89a31bcd6bb0058c309c57130f37875012efb79bfca74e0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBSMU6719886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333869526dd5b37bb914bc5511dbe0b78a160d4e8d4b56b63da06ec9fd557753. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GBSMU6719888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f863b02791b835b58d20f6c8746901bc7b9907b275b0e51d9977b485282003a. 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/GBSMU6751050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba524bd66715f1416c3f099ef1543a58525b807a0c018bcadbb7b5ed130b2cd. 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/GBSMU6751070.