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 0xda3709b7483499802f928e0c64294090bb038779fea5f35cb450e446e39b5770. 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/1b97705c-a68b-4813-a8ce-be0fb451e660.json and https://artists.proofprofile.net/proofs/artist/1b97705c-a68b-4813-a8ce-be0fb451e660.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Still Haven't Found What I'm Looking For
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 0xddf8c6ca744ce3282acdcaa1247ba22e55bee0fd362ad5f8a18576b23d608187. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/SEXGF2399647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153f64d01bfbfe724cf38a04434083e6a8068dde0655fa6e84773d925bbd1909. 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/SEXGF2399738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd945a59f77d1e8a6dc0aceb5535bbab779979d9fe01fff0aa3280039350492. 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/SEXGF2499279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fba150c49b36ab1ddc34d2dc6eee928ce350c39e7cc46211d8113f6f8cb55e. 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/SEXGF2599100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1852cdcf2454ad44a1a20ffa511761102c9226b61ea010e6327b992cee36f624. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:39:28Z), 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/SEXGF2599132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b98c23a9f3bb921a6815a3e785a8bae0700812995db6e1b293db484e4b9c597. 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/SEXGF2599236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f45e67e78870954147fa75d2abf1ed49abee8718cb45c70123061acf029e62. 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/SEXGF2599291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c93abb979fd1dd3e9ad1a9528af87ebd65303f491bed9ba9d028a90f7f911f1. 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/SEXGF2599345.