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 0x1fd9799c0e42327f51e014f21bc44f0b4180d26a4d73d038c023b0a4e614d50e. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f940b078-8a0e-4222-a595-86a277c92940.json and https://artists.proofprofile.net/proofs/artist/f940b078-8a0e-4222-a595-86a277c92940.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 0x1c4a694c9817e087e95a58831fd0415c3639dbd40a77a307f6d2da26fb3ab0d6. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GX3Q92350308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a0f03cc9592d6d8973e8ce297c744666a0110159ed23cad27fbebf1d53d848. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX3Q92350309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b1ebe8ce198e2215b873430deadff40dda7c2af836a81e8ece57febfdcdd89. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GX3Q92350310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca6e44c174c879c3e773a334a3581b4c38c7e26c4a8482fdb3d9f8caae36821. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX3Q92350311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7c706f0bc2c793dc0b1cf61d78f8c309887252b8ef47f99dc9b42d36827b23. 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/GX3Q92350312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0dc6af542017ffd2d36ef85039f9fb6b9201c0faaf8d8688ed461b53e1be4e. 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/GX3Q92350313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8d5e41c82e59e9013b7d1114d06d45fc6f2e5f9aa6690220d75dd7089dd376. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:47:41Z), 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/GX3Q92350314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb273fb844dae928ac5a6656a8ab01d1084115b6fcba6b3661064b0bf10bf10a4. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:26Z), 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/GX3Q92350315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4838cb1831569126817943be8c5af3747531907fc3dbbf06f92d13d128e607a5. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GX3Q92350316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6073277bcf9f495474d952f057903a4e4e700f6d0e58dc171c3062498d191b7. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:47:41Z), 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/GX3Q92350317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72124c674f12f02fab61200bd990a75743093de7bcabd4a6937e118b37eebf57. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBLFP2311543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecf69c2a6004ded11d29206c6f4add80a3d2ab9af1c8f3f5456a88386c8b5b5. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:01:20Z), 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/GBLFP2311544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507a784708b46c3420976bc540d16ce1dd29db599e0600eca72e9a046b5f7dd9. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/GBLFP2311545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb78da144296ddf389a02b95b8c071d2c4c62714927ab37a4eb5d53c173560c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBLFP2311546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc197f8fe4b37e8345f3364f022a1eafe61ff63ac1530820a331ec30c260b0f06. 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/GBLFP2311547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cbf7bf01d8501764d0b0d92b5076bc872cce9d256e3f2e4e616abb30e08378. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP2311548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814ed24b0c26c001aa91a3cdd87e541748163f5aa24ad57ae34c4a7ec30ae3c2. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBLFP2311549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa496f65a4f5551aa1acecec8137b933b674dd6160980a7079785e94374607a6f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:26Z), 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/GBLFP2311550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69ed1c871c3312af297e669a9227deb8eed36eb86248a56111b269fcb5242c1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:01:03Z), 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/GBLFP2311551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e440acb9089988c6a3cd33f6f2b22c5616b5154849e30cf291ec38076d2480. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:02:30Z), 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/GBLFP2311557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa58ae9918c84824376f6804789465ef49a3631c64c8228d62b1994996cf9bf3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLFP2311558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1415b59e67d3220e3b50e86c035b18454924b8785906c1abce67e7aa20b97416. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GBLFP2311559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95aa4e379b964410f56cbed2ece1fdfc5d1a9b3691214ba20e3f33ea77e6929. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GBLFP2311560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aee4957968e09cd4b4c864f8cfe274fee2a24d31b449e9ac27897a2167f313. 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/GBLFP2311561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07719214e8d3bca2fb069a1a12314b596f5f882e52b921f704f5b8f2bec74cca. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLFP2311562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e3f8da0fcaf34e54879cad39a0cd3997cd3b73d6549f51fc2c4eaac146f774. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:39:58Z), 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/GBLFP2311563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d4b1b38d0e73368f235d5dfe7a21a71fab6aa205acd6300d49a6f09f9fb60d. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GBLFP2311564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5135221a3d22a04a1b3e089d815c66258b2967d5caf2d86463ffe9ec3325f175. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:08:32Z), 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/GBLFP2311565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae2ff32e489124773217ceb50d8dc503ec5e2c6a476ff3dfc8bdf44daf7b722. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBLFP2311566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a0a68936f50f0ce32a9b1c3f1ac77c5eb595e9cf7834a7aab79b10cb2d5e6d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:51:40Z), 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/GBLFP2315851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535ee0117e388a201d597bbbb443a1a5316d3beddf7c021b06b615c4fe095951. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLFP2315852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843264aace2de18013c14e1f9f5eaf341809790bae36aaccab14d2f9659ec8c6. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:36:28Z), 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/GBLFP2315853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6f4ed5f5f60ef453f0aa6af5c067018f5b9495b3a11e1daeb43f06bd20cbfb. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:27:14Z), 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/GBLFP2315854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9d53df6b2d05e4443f2ef7f17a82a295c79c92a0701b8c2b139521d3d71d37. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:38:39Z), 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/GBLFP2315855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab2b88436dc77d647c7cfb69e6b189b6dfbe73ba58b516366eddf549bcb1710. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:13Z), 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/GBLFP2315856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2747bbe69afa387f78ee964209f78f947eb6a7f78e95534203049697075b76ae. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:40:36Z), 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/GBLFP2315857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b082780f075f252bd71eb40db2fb24ec527c6ccbdad5cb3093530d0048cd8e7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLFP2315858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d106dc57ad3b06ee434187f25157c9dd170b8ec476279292393c3f86fc13f7. 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/GBLFP2315859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfc0dc56eaeb1fd46d3fb6191f9f3a391645a5fd0d8083a31b7a7a915e7c67b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBLFP2315860.