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 0xe1dc9d2b16c22e969ab80bef0dca6f13818330b9f31c2cdddbf6a5d1af1c7adb. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cebbbe63-acbb-467f-8db0-c15dd331791b.json and https://artists.proofprofile.net/proofs/artist/cebbbe63-acbb-467f-8db0-c15dd331791b.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 0xfe115014b7e61ee58063fd11acccffca842c95e1ee3921e4b78065aa208c04eb. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:15:15Z), 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/PLI366230600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ec700594c2f833602aebddaa480fbc3ef6e22056baf923966848a05a27021a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PLI368723280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf314e818a115523a1ec65fdd2d7e1c2993713fdd1bcf73c8452982284ea9cb24. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PLI363259690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd114bef67b4ad19e4dc28c60c6db4a72c349d0ea9c42654086eb08b094dae64c. 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/PL76Y2309114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bea0769e68cc81d6baccdb8f63b165d5d24aa53167167c46b092989f1e63721. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:45:48Z), 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/PL76Y2311116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6422b0c7dca4ebbcf513c74955bb109e74de96abf689fa49ee04547f3591e151. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/PL76Y2401120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214da614e8d52f971ce08fb62041917ce5fe3fd7daea7fc7cbee8021577cf0fe. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/PL76Y2404005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b5a1492502b5afd3be197fd32f6678157e7850fed2ee7f05ff809f6c16c14a. 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/PL76Y2407007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b5a1492502b5afd3be197fd32f6678157e7850fed2ee7f05ff809f6c16c14a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PL76Y2407007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80697f0b899fc545ce2a1e20fd37be0d04cdb9421260ddcd88fa19db73d9658d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PL76Y2410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80697f0b899fc545ce2a1e20fd37be0d04cdb9421260ddcd88fa19db73d9658d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PL76Y2410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c57d00dce70e2629808426a3c176cb3013bb5b37ae335532f7a3011e454580a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLF242514491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67826abdc5b8b14f690684a99e42336c63c1af63b4403a35e8cdd7afe66decd3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:33:27Z), 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/PLF242514950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08540a4d967f8c2a871a113c635ab73d3ff40ceb8bf3512325fa638f4374d245. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/PLF242515218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e8684b85674835606dfbd8d01252147d595d007413c22417c2a0efe8ec34a7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:55Z), 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/PLF242515269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c57d00dce70e2629808426a3c176cb3013bb5b37ae335532f7a3011e454580a. 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/PLF242514491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653db67d71b9913c0d57c7590bee53007c97f5fb35dce70ca8bb4b59bdde2af9. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:59Z), 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/PLF242514627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67826abdc5b8b14f690684a99e42336c63c1af63b4403a35e8cdd7afe66decd3. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/PLF242514950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08540a4d967f8c2a871a113c635ab73d3ff40ceb8bf3512325fa638f4374d245. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:39:13Z), 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/PLF242515218.