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 0xabb34d69cac7bc4c4d755ce2357c15149c225c7e24935274ff5ac9bc2d4c90a8. 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/cc5734c0-6434-4725-8f57-d0e205c27620.json and https://artists.proofprofile.net/proofs/artist/cc5734c0-6434-4725-8f57-d0e205c27620.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 0x7d193ce1c1ff198d65bb0d1256568a0277105d9f579bcda45f29756f50274ed9. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:03:24Z), 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/TCABR1386811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5b522d6d2c26d64127d43ceeabae4dd7920fe2ddf4e92f8e56c42102f4b4b5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:11Z), 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/TCABR1386881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2716cd39253da3eed4be45693776e610d82b7b8a1a31a90d9c373e0752cc0c6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCACM1697348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74617b851a3c2dec9be2f00dafc058d4352be45d104cbf92bdd967331aec7b37. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TCACM1697393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5433ee575408270ae4d572bdb73005cc4a6af7966539dc122c16e39276fbae71. 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/TCACM1697038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2721b62272920ec3bd394c9a03b743b564b115fd86c2a52f424087e7167378. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:46:51Z), 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/TCACM1697116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb032c6698fb7534cc851718cd1f1b6a543825689c3de7bad354778c7f506db46. 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/TCAFS2164973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c1dbc07b37210166e95ed37577c87184e233027121abfc17c81ee299509d62. 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/TCAFS2165051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf6926b4c10a8d56d02c044cd1f2da2e8551c53f0b9145cb5098bcb2242b711. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAFS2165076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6c6ad8f457839c322148309f2c5c4e2e0580ee492e0096dbc11d9df895bd9a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAFS2165085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bde2e05fffcedfaf584a92f3bd0f62c95403935210ae8f603478e88334a049. 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/TCAFS2165198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be04db7914a634068c4295311a7571827c76a88633920ec678689a25a833019. 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/QZS7J2283248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0840c8f3f5c2aacd0c794b5a31f6893386240661de30c2b06863a0a398673ac0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZMZ92314411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883e0fea7f2ecb312f95780b714caabff51d87b312a06aafb084f92eada4f7ef. 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/QZNJW2315469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2614642699ed22da30a904bc9eaeca6651e8499f3a84ca89e618fe5fdfcd3f38. 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/QZNJY2349495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98e95673c0e69d29a4f8f8cbc41677eaf99ec1e0c3676d328e932aa68956de2. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNJY2349497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ce8b9add810394c589dd07528eac3ee0760c0955e3563db48fe9e1bc6f3645. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:19:24Z), 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/QZNJY2349498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad45fdf321c26dd528c1a561420f0cf1586c9f97575b6a652dab1afaa39c33bf. 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/QZNJY2349500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bb57921cb8671f5a3853712274ac29bb69ee91ff3025ff1a0dc2b3e62e251a. 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/QZ5AB2454850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb44832e89291dd37bf29b0e059c6b1307e958413ef77f283ce83959a54ff27d. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZGLM2439256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970013ef1c3b673d82e8b6196ae9c68004aced3b480dfdb8a367d099f8b5d22e. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZGLS2404192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee8f51292d8c1a23afb5ef3cebfcc83696544dd89840576eeb94a076c7784fe. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZGLS2404193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc59caf8a74b009f725a8fb284559d2221b924df9c5a5d5b6559f9fa1a016158. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZGLS2404195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bb57921cb8671f5a3853712274ac29bb69ee91ff3025ff1a0dc2b3e62e251a. 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/QZ5AB2454850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa1fe8652298da2037499b15cddd7923ac13cd460eab483a8dc7bb81c189b53. 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/QZGLS2404197.