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 0x0ba5325c83c76e8c699ae3d38c2b60cc7994eba13a6500c998770f6d6211d652. 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/387da1e3-6022-40d3-aff5-34a980f4eadf.json and https://artists.proofprofile.net/proofs/artist/387da1e3-6022-40d3-aff5-34a980f4eadf.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 0x08c374fd68e1ed396721009983c6d1cf4c8c57226a3fd71844a7d35aadcaf539. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE66N2278662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22dc49a115963fb56edda29df6e12f88402da66cc16e445a9e0dfce1baa1fc3. 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/SE66N2278663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742e6865f42c2926960d66b194c3111d76da21284e9bf4cf640d72d122ee9a8c. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/SE66N2278664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b6fe55135bdb3fd874c0c6c211aa7b73fe924f13cf8127b91de98b49e0fa24. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE66N2278668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17491ca764ea16e0ce314274c5a60bf5e6caa6941ea6f97296ba86f4b3374546. 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/SE66N2278672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0494502b624c85e1520249704c92556acf6a3bec3beaad3f2a0e0730b9cb266. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE66N2278674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe091b7f086cbf2456f575f39237db1c2b3ea6e658094c1c1136647d76bb13ebb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE66N2278675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ad6116910acb44b93011db5c4d3bffa7b557ff72e830121a5710f8ae4ed1fa. 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/SE66N2287651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482c3f0fe2e5e37f15234ae32724abb2ced3ae6b617e31efac267fdc89138675. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE66N2287652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b14358b116cac7b2346f03845d31040df4c38e16bb5568233c767d9e4f986c. 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/SE66N2287655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e1aed19f5d33362e54e20c27686ec7a01b157b039fe4d8cd6d110a8531b022. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/SE66N2287656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96621c649724c3c563abc39ba4f8d206bf14079235a65578e975d32f4495bd43. 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/SE66N2287658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1489c7d8301b94ac4fb89435df5c87096fe6515e5d1ec717650c01a4abc21bcc. 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/SE66N2287662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9bb0cacc225fa5ac7108085697649e60dad68799c8bea303f71c7ea504b94a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE66N2287663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe423b3123aa2addcf6f1493010e63c3b684673e5c7d8a6593a385e6cc9c4cdfd. 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/SE66N2287664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea903f77d53d5c4a53eec570d4a82fe0fb3bf2b486dd3e064fee9392e22579a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:30Z), 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/SE66N2287665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b048667529f887cadf401e23b0a385c88698d4e3c6ef8806a4e5082c1d4bfe3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE66N2287666.