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 0xba2fba98c64e4430fae33e98ecc5d3e355191f8dc07eb1ebe2736b192f84e1ee. 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/9edfdc7d-8264-4fd5-b08f-14f76c322c47.json and https://artists.proofprofile.net/proofs/artist/9edfdc7d-8264-4fd5-b08f-14f76c322c47.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 0x552ad5c79d2910e8e8e94ead2029ca865ac350b354c48f202623b919983397c4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGLM2323846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258501a19e35cf9307888074c84dee01684a08bf946dcbcef0f2385d0df64542. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTVM2248835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f4a09a2c270fdac4be18708cff3ad67f5d65e59627b1f447fdf039f46bf1b1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJX2296669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b935a796937d00bc3cd4ebfb8f98a985e23780acf13469b51eaa67f6d7a6b95. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG2489702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa083a768a364f2f95bc2f6053aa7d96d55a9140073d23bba9d0511ad70d21253. 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/US7VG2413237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935f1c6112bdd600595f551fef72558187e5d9a4512d3449862788f274c3d7c9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLS2449581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81840312be3bcd3c51c76b4bf03c71fdd089d6841ad269a143c6bcfc50f248ae. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJW2499148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab258b67eddf3ca145ed638febe22843e411a4fcf69013986e092656b1853d3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJW2499149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289b74f4f16ca84910e10fd4570279ee00b39c0a59cd7869e56c4da5aceffd5b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNJW2499150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa083a768a364f2f95bc2f6053aa7d96d55a9140073d23bba9d0511ad70d21253. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG2413237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2591945f26ed8bad51687cb40706fdca99f1412b7ed0c47483913911ce83eb8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN52463126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf459715a173add14e38e4b99559ff318c6267900aea00a4710e99cf4b94166f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2517792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3beff63fcc42b45db0ffc84591b0ed0c3ecbf813aa52548afbbb4860eef521. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZGLS2506308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04549c693fcdef54687b61650df822c25b3501f294244687cfa2d424f8bfcb74. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE5BU2571284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0cb48ec728dfa460e05a83b35f6ef7bf6f851fd5f7d4166bbb745276d0af0a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US7VG2556975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf984a482d0cc2f1f2cd170d28c535bc8e47e91925c987ae85609e2187f43d0. 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/GXF972495259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4cd97188170c3e7217e358215a7e9dca930d4306177e3a04307db4b7b25d7b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9L2453517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7da6322fd62090935c6548035a3fe0ca5c54a536b485a6cb81cc8bc1679c115. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/AEA3A2277712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524f1f4b34c0b1a9d5dc06c648353702f8d92943c21e49e0f7e69fd65c3e5d18. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9K2437100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe951a7369d8162afa5ace669b45c09f4358e13be5b52dbb6ea8e1241335db354. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJZ2439274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289b74f4f16ca84910e10fd4570279ee00b39c0a59cd7869e56c4da5aceffd5b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJW2499150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81840312be3bcd3c51c76b4bf03c71fdd089d6841ad269a143c6bcfc50f248ae. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNJW2499148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935f1c6112bdd600595f551fef72558187e5d9a4512d3449862788f274c3d7c9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGLS2449581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b935a796937d00bc3cd4ebfb8f98a985e23780acf13469b51eaa67f6d7a6b95. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7VG2489702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d79a54035b0f49e099485f0c1a61c9db9cbf4da577f8fc5a14e4a82a88ce71. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZZ8B2326439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87affdb4b4af10a9b4cf5c09dc5fd3c1df2e177e220a35df06ed65ea9d222211. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJZ2362971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84751b8d0e913e60c6cd849ffa3ae09213c87cc4f02455c2685f5c6a354a2d92. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE6XW2359156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb84ff891374b492ac5eda6d06b110b9e4a2bef74992c921d64fa188b34727e0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE6SA2390462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69990b3a640d1aaed27801afabe4c5cfad1e0baab5d4fc68bca4692cab1f653b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJX2309607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba50b03906906efeb4d86904436437f0a9e53100b0d2f79767041b480821eb7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJW2333756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0012c2b518435aa50838c653491fe09d2055f7a03ee473892ac16b6a4ec5f52. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6I32370653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04e675e92c54e4bbb040c3cea82ede1e68539e21d5c51020e66312ffcaf9636. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMZ92358664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52df2252c7be63c366f3af20acef0ad2988122747837f3bcc7e9e28cc669048. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGLM2372081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa864253fc2ff929bbd1333fde2aa6d42570204c4330d1ddca4357fc3255a1cb1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG2347642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb9e98fb3193b9ac3704f284f9e7a48e5569fdcfbbddf01f1f1510a99257964. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZW9M2268578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea5350678f1c0a27ef7bf80f64204e55033d9c886a955c7d7f6f7eccea5e069. 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/QZTPX2283918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294cb0f683e89cf162c43d87722399e10403f182b359d355dc4d66fe6727221b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJY2278226.