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 0xe205ea4b1a5d0ce9a99f63078872b4456fe7d0d1481c4e00c3e0a9116481fd15. 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/4679adda-26bb-4310-8b16-d9022a4bf808.json and https://artists.proofprofile.net/proofs/artist/4679adda-26bb-4310-8b16-d9022a4bf808.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 0x770206b16510037f5e433a1a4878b4c5626ca33f3946669f138941a3051ceb65. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGK2235966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770206b16510037f5e433a1a4878b4c5626ca33f3946669f138941a3051ceb65. 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/TCAGK2235966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1f5eca6d0b05373c5221c5fd48c24c6a65616e0b119a152937ee5efd8846a7. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAGX2350986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6998ac30a4504b08592c1ef7a33eacc8eb34beba6fe96cc3dd04cd36259fdde. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:32:37Z), 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/TCAGX2350993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edff1219aa39f764be372beb53d9a575ae44ede8be014cf64d98d200011a9b7. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/TCAGX2350991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6998ac30a4504b08592c1ef7a33eacc8eb34beba6fe96cc3dd04cd36259fdde. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:03:50Z), 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/TCAGX2350993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb6f1f3972b84fec5abde0f197963f052e496689402d624fbb76601a60d5b56. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/TCAGX2350996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71ba77f35b8ed4cdc067d4d807729af2652071c679edf36949193b56d7b8e8b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAHA2347169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8a0611eb06396ee59dfa086acf761edd784f37c9330fd8e8b8c2c4cc3d4db2. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/SE6XY2374994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8a0611eb06396ee59dfa086acf761edd784f37c9330fd8e8b8c2c4cc3d4db2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE6XY2374994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2677055da35bf7613d623bafcec57f5edbe26351e024c7863d5da7f5fe65e8d. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/SE6I32477228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37aeed7f985fd0b4667b3ad4e191af94276ee5dff2656e14df1d002c95f4b6ff. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:00:17Z), 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/SE6I32477229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc7e1c0ae7ce682e8dc682d1abe4fdb349921a4b1853757911c899c621cdea5. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/SE6I32477230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f47be7c3bfc0f1f75950ec5a75b97cf0e7424331d87fa2c8ce3fe4c8577fb24. 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/SE5752448577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798db2a4355f94614133ae21c2caa4d9b45a95db437f132be7eb6eb6115b68ec. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE5752439245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccfc584fddaf7593f874fdbfd60e455476e2979fa2a58ff8b4dd45932db3dce. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE5752448578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd992ae2d232bf2b2966072e93094ed43906f1f25e03bbeecfdb72f1a0819f609. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE5752448579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71231a6e32a95e425d43f12b80c4cf4d1ee7564cce2ade80e36ad743560ef0c3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE5752448580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a33679d259ec49eb7b99587e75bbc00ff7bccf6eb572730f5d96d213ad7d582. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ32532494.