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 0x2a3c4f2cbb0837483fb8012e17a4f7b51907efbe109d074efab51acf5c0f92d5. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b70322ef-e379-4939-9423-708b61d7b475.json and https://artists.proofprofile.net/proofs/artist/b70322ef-e379-4939-9423-708b61d7b475.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 0xabcaed3d6df1f5856b7ff29b313dc9b8067327c6ab1377bfa9e70ddee536e77c. 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/QZWFH2416025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419957969304504ee56c63c435b7b5c88f2adb851f2a9c5705a164e4bf633270. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWFH2416026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2c46d7c2c6327af55e940c0abaf893cdcca3c8c4ac2f975f2eb5abb52c860a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZWFH2416027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed498a47af775b2145bfe2bf874ab36dea4604020dd2affd54082b2e0f735ead. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZWFH2416028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9563859a669a007d24f12a20886fc20118d80f6dd467df855e8de805da3dc9. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZWFH2416029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97f792f2424f89488e17ea88348ff5c2f3ca0196eedb7084928646c5d7a96a6. 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/QZWFH2416030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8d935682df885b80145e95fef846394ea616c53b06ade8c4eca8e8e38562a8. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZWFH2416031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883dbab98f56ac1a3ffc89f2f4042a11f648971013eeeb599d68fef1c5f53f6e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFH2416032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa00d7205dbce8842a30eb992afaf2878f50d2791b405d7f7fac7d49be0042c5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWFH2416033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fda62a669d4d0c8a8ff98093c08a7a701d6d2d797e1ef705eebafb8cec42e5. 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/QZWFH2416034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e29eeaa5c26f8b4dde856cea50fb84d63b7fcd1d78a1216caf0c6f806d7641. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZWFH2416035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6adeeb50e7c8b4b7d1274524d6cda10a38fab5755713d9ef5ef96075ea69d9. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZWFH2416036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cd42e21b8e559bb6f0face60b9714cd43ab586155a4f218cfc2f9ac6332374. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:37Z), 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/QZWFH2416037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f77fbb2cfa2743c6736e4e9bcdfc92f5f9b714e0af7e970ddd2cd3c97b1fb40. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZWFH2416039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4069fda9dc88061387d812c05cc3536720eb6a8f963355a928331961303ab3fa. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZWFH2416040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d277f372c49d2435c2a14bc1da59e041e48789e3b0fa0874176310669e5a21f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWFH2416041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f5f4470adeba3ad3506f08c61155af8e6f6d4a12a521c15f881c97761f1a98. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZWFH2416042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa502c12ed929e2b754e364d543339574628020ad92fe12287d6d7e636dd606d. 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/QZWFH2416043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ef3e722df77221fbc9445619b1462f75ef3e87019c6f296645e3597edb1119. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZWFH2416044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a3a5ad527ad6d10a504bae02c3deb4851343e8736050c089f0e5de42b7af85. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:37Z), 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/QZWFL2422077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5432957d2fab90d9329a6f440959c87312f29d88e41825fd7de2c6470669c5c3. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:04:38Z), 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/QZZ772458044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f1e3e0016a09995ff681216655f99e87d646a0cc3ead1d796e7d0fc4f1f6ac. 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/QZK6N2509788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f80ac2015fae3f3ac2594d053bc867f521dd29c1b551816fcf69915ef1052d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6K2528671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f80b87d5886e32431a3bb141d089f8de7e9ca6b5009aef508ba92be0e15ded. 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/QZMER2530179.