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 0x2d7a45b5f4e218180c1deff521c1e52765003a2adc561fc20cc48e314f78de58. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcc037da-4f8c-4a6d-9bd7-9d3ab3664773.json and https://artists.proofprofile.net/proofs/artist/bcc037da-4f8c-4a6d-9bd7-9d3ab3664773.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 0x12ad2d2216f8757c5567e6486e82a86a8df5e32165a421a4abb60b19bee0855a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USX9P0983721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a8631fef72f76b523f491639013ac8deacd1742f4644024f4907fdf486c72b. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USX9P0983723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d2499f50e54ce1fb790ac8ade460ad989b280b2f6fc4c174afc148b40b993c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USX9P0983724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73ca9e4b1be42b046059de056ef3e3c742e7a92a4d9d1c84c194744a96c02a2. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USX9P0983725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6f7cb6f4c91feb873b0641feab60f5c56abd30873375ae7b0f39777befab8a. 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/USX9P0983726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c3864fce0bddd18771d90b055d9d7c9b6079975168bcac05bc7b7cfab59684. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USX9P0983727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a0f038efc2830472c8a49296cfc1d6963787afa8e38323f3c89d0c699b4ff9. 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/USX9P0983728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa25f45c72901702871f469a2ead1e3f3dc5921c8f430fd5a62423335c58d72c. 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/USX9P0983729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648ddb9c43ba83de2eccce19e4a2a2d9d07bed2727b9e445fcccd1bf922ebdfe. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USX9P0983730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8a3955dcbb8d556b571a5493b4067c0ce0bb5f47da76f55b9d35b0be71431f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:31:09Z), 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/USX9P0983731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2882bd779f08de381348a8c6bf26d152c4786e6c44d1845f91db5e12633d337d. 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/USX9P0983732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530fb9b5f3fd94e6ec2802aa01756157195a5098079b8c4563cb0d85feae4be7. 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/USX9P0983733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3eb15497d778a9f1bdfb79e4f8fe5a16c75733fad44c6bac54ff86d045d4873. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/USX9P0983734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1a36f747c5ef50fb2991a47e979a308f1a25b083f380ea84d7641f9a551690. 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/USX9P0983735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e83372e4c3830b8c0d9d731ff905483355feb3cdfb98209d7395dcdfdb11efc. 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/USX9P0983736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69442394f74f7a7dd280c59d139cd0d46fd044897d972f21d6f043dd4d1e744b. 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/USX9P0983737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df4d094a8b63c41b1fb0dda631b9ea01a4394f5ac7a01efbab3c4c23d584369. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:37:56Z), 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/USX9P0983738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd7783efc34e196db5603e99608e00ee40fdfbb745da9443abfa795b69c9469. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USX9P0983739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb162c7aa58a529dfe244b8443b30ed41ca7b34b6fdeaf3494bf0b5a3324c6b93. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/USX9P0983740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdffac8da6883e8df939298ae3050e38067a4a68b67ba5b0d5e71aa552b16e2. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:29:23Z), 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/USX9P0983741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b7663402625401607061adc4f59e555b4e789a56b274d8e3da5f2fb2e76dc3. 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/USX9P0983742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c74dc68d617b1275a0526e69b35a7ada05b9e2afc7cbcd5e9c93c97daddb9c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:47:13Z), 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/USX9P0983743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c56e7940c6f3decdb86abe186478251abd84d3d3364cb2b6a0b2e8c17c6b4c. 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/USX9P0983744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e979cccd9ffbfec2e95167c50b61578810163d6346b25e6519b9fa1c5dcdd75. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USX9P0983745.