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 0xf381a30af2d686f82a21533fbf043d3a6548436a117e26b77365cdb83a77d157. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8aa90655-6965-45a7-a89a-10053b2b7bfb.json and https://artists.proofprofile.net/proofs/artist/8aa90655-6965-45a7-a89a-10053b2b7bfb.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 0x523cc0831e2780ff50a58f7dc407c61368db1684f4e46cc6c3cc90612df57e3a. 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/QZHN42498739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76ceea2b9893f3684b06d9773087bb49f39c5e6c23ba1f005bc7c8fce288594. 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/QZHN42498737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12037c3d0c9cf4dd61e286d76cc085aa8c82fc748060c204c98f80777ad1fecb. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN42498738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5170118605f894896983947375505434c44fced54d3dc420326b0b6c379875ac. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6Q2449604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa0f81d95ba1ada9d14505ccc33d529cb10f37373bc9840d0bc04828fbf1785. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:09:30Z), 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/QZK6Q2452999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809f59f0b0bda03e0bb3dc64b1ced890a0d13df88068cf0336602d80e17a10de. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZK6K2490582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031296245df26eb705266665d9d1406918fd5798d77632715ddbddd879487278. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZK6K2480601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fc086a5ea8ef7df57b38b2bea3c219d4bc3dfeb976fa2d36fabb885fbd6474. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZK6F2416469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48d785ab5b1f3ab5f3c89f17e7174ba801ee0a55a3bdf1ca035fbb57094522d. 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/QZNWT2415745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d311bd3a34094666d70924ee4d6b1594d150733c111a77f6dabaac5a3e78fe8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:49Z), 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/QZNWT2421538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76ffb71e343b448df516e5313ce6cf9c975a0fbaf2c1381f3f709fc018b6cca. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWW2429065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8520a2904a6fc9d93199645929fc3dd4c34b6f536cf8d1be1eaddf3e27c7f9. 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/QZNWX2416837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2065fb7376635b41ab692703e5cfca481c9a852ae41bbec4e25a2c5883b832ac. 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/QZNWX2416835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe114d6a5e6e377dd186fac0feb1651f38b009c31b41056643ca8b0d5aac845f5. 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/QZNWX2416838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa0b18d97d8eefd340ccc944dbc11e30ce08d981150506995faa71aaf58689d. 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/QZPLR2469121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459558588200d70bab36bfe27110db0aa6698ddd5ecb419c41ef10da78fd7211. 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/QZPLR2450177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1490f1182fe22f67ce0ac838474264d32000b5f8aa7ad7f1bc54925b663f692b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZPLR2450180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd5df37a3aa07c6375f1abc02216d84b7e203e03338a83121ee824f875cee61. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZPLR2450178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ffe7264e07c29e356a762b4d06a24da90c46a8ca6cbe93c6752ecd853afca2. 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/QZPLR2450176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57b553ad838166ede3384598313ad24b0208fbc2866136eacd911cc44a79d81. 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/USANG2410047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82a8a3ea83e1bf68ed50f19e35ff34ec07873b6bf3a7e953262feac29a9d24c. 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/QZTB22488508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d91000497c6af9eb7e9236a91f579246432368831dd47d37bf3357b6534220f. 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/QZTB62490950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fb77d32a2e38563c4dce6babd33a09a581389aa8cecad9cc1d71a8d072ab04. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZWFF2434078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61032ce1c7f2f31d235db2f85964f90f44e83be050bf8730b53a8006fc5128d5. 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/QZWFK2492096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3deafb3e576d3f4f23d6835f28b284204d6f92b5b416a26f62cf22b3f2a92447. 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/QZWFQ2499457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002de0a7a5c44de02f2e08f307e2f6b4c3500358a66c786feafc6deac1a91695. 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/TCAIZ2442356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d86c4d17a149252e6bd165da78740ae5f48b59d968abf62145ccdbcc2d6c49. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCAIZ2450434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9593d34d4bc4a16d3df4841d02152b53f3a7249f93e76ebf01af439cdd318961. 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/TCAIZ2450383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04fa1bd6918774c6a6a0a2b3adf0a72e2201084eeace43ceff0f2f3f9cf75c0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAJB2475493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6210a87ffadb8880855ad2760bd260f7d5497620b516ddf3b46db51f2601fe. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAJD2467517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5f2893196ac7ecb9ef8177b2d38f487896b95f8a822bcdd851aeb10243516a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCAJF2520429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f01924dc8ab51bd4a7efdc284a6c4385b5c051acd056afffc0a8d8dd4d32e14. 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/TCAJI2576296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433de8136330e797257c9668eb94c25c0bc8dc5c5362caff2b954ae22c87e746. 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/TCAJI2557213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6630b044ca94d345bf23c73fde3e48747e88f2300c44a59a12b5310155bb906a. 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/TCAJI2557229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba96ebeeaf09643063b702f17d1f143eb97579402e53ddce8fc6af4d0f8dcd3. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCAJI2557261.