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 0x80a63ff04939e56fbf151753a2c645931a3ca7ed599a4f45fcbe76c9551c22b8. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0524399e-8561-4787-b700-25410d4b822a.json and https://artists.proofprofile.net/proofs/artist/0524399e-8561-4787-b700-25410d4b822a.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 0xe3e1738bd3e61aeda25d3ffd733141136d470f083331c3207eae85823b6f3b60. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:36Z), 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/AUGBT2403974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4225df725af22afca44687ccc32d102e8fc6aaa81d9f9b52c8ae1beaf28cec68. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/AUGBT2403975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4ce45a99ef40459526fcc6e9d0e49e4e914c7863d4516e3d7c91539c5f1908. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/AUGBT2403976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4975f216eeae7715ade953e5ce1b5e027f8bbed33a97fec6f1328ab30b947ba. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/AUGBT2403978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39ffc9706693cd6150db4e0f9102159a430a47a8ecf4ab8b084cda72834ba78. 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/AUGBT2403980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582def72051eccb53ce6f111a349464bd5225d89762b59a2c38de8dfd9a24e11. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUGBT2403982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f003eca91271c59fc318e2e342e769cb41b36292aca0dfb0facd32a063d23b. 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/AUGBT2403983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ae4eacaadb2bad4e3cbd0c5f0bde3196696af8c993fd5113527d7fe48593e3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/AUGBT2403984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d1adef778d32ca793e64570f44b46d1cd9396d8568d06bd926d1acc365e039. 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/AUGBT2403985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae644d1e553f7428b97f299956cfbf8c8ab58ce239eb83d45f2906201e008942. 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/AUGBT2403986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd0292fa3ac58e8ca7baf6105aae82c7668701a7c47148ee5827fbb35d40418. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/AUGBT2403988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a61d5c15ce19b00ccce5cbbf7deb90296b2093c663ac81f3c46d6f3e75c814. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/AUGBT2403989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea556d60558c562ec2f870464cc285e9f84d7a4ac07be8b8bf923c15cca8dc5e. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/AUGBT2403990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f3540ec542ce5d43a3ce7039a9bf5cce80de4a936cd2a79e94c3190aca2e1b. 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/AUGBT2403992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c3ed0c818f2a490db4db3767b880121e63dd64cf3e20144522b50f4fea4e2c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AUGBT2403994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2e9d6678ad6e3be90160f31cd3504090781995841b309186be9c3df83656dc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUGBT2403995.