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 0x1fbe3b75204401c66e607133475248e42b04eca45ec549002c5b153fdfc99c19. 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/487bb22c-6860-4077-a1f3-965c9d77d490.json and https://artists.proofprofile.net/proofs/artist/487bb22c-6860-4077-a1f3-965c9d77d490.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 0xb5e590bedc0c17a7679026ba355253f6119c16404405742ded58101862f38382. 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/QZ22B1817289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8ac05dbc46386eb1ee1f761584305233f51c9fb1da0ece5908ad6a86c92416. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:27Z), 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/QZ22B1817290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eabe303b2deccfcdf3575e85d9cdabb60d1fee18dd3f933c82916bee6df610a. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZ22B1817291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90762ffe8d56afb665010148f12fe4f06182ea6d62c83e5b75e64318f884347. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ22B1817292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7d1b6159697f9a0559a0dc1f6ac4597c63b5197c31430d91134f3c2206ba60. 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/QZ22B1817293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7781948f876e8bcee8a0bc66d3b7849c6328ae01239f289998027f3cf3418f98. 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/QZ22B1817294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2db7eb6de0e6c65be6df3d7eaf492b8b31b497bb307d708727ca25f66bda4d3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZ22B1817296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326c27cfc8658c393e1dcb13456caffd3f2bfd96d720c6aa2356a36db5ae88a2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZ22B1817298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2148a4ed51aa2e55ba1d95077718883b89ca862e2fc0e5c79ab7c994e8e11cb6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZ22B1817299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78109e71c75129f7a7a53db5893c320bc3df10628c6dee35f1db75157f4c1b51. 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/QZPJ32110581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7f66188e1ef1149fb730cd19593b59b19dae14c9d5fbcf2b3e5c21035221cc. 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/QZPJ32110582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0c10b5dd378930a4f2733a81fafea531dc4aa54753d970a114b343e7d02847. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:13:17Z), 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/QZPJ32110583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe117a33eea4f02364393860806dbc61329f3ce4617651ffcbb2ac16446d2c7. 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/QZPJ32110586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750bdd79c164bb77152007605fcc1a7995775e45bb89d7e46f458477f67b5cfb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZPJ32110587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9601bb42cb3d602a1118569d8fd989d7728623bb84199bdc2950c0623dffee. 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/QZPJ32110589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe578668fa73c713e3e4e018890944d684c27a4ada59fe4624f1933787400be06. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZPJ32110590.
Dr Kobushi's Labyrinthine Laboratory (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b479b953a9c66858af25231844300a9db4e3d0a439add3d10186ff667cc7e7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZPJ32199676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89907fd0d7875c6834a002cc558b6d920da8ca853f2774e32134628ab3b863fe. 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/QZPJ32199681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92507b1e3f16a24e2ec0fad242d0572243b4f8b9b74ac6cf49bbab8d07cca6b2. 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/QZPJ32199692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e58181303da042204439e8fa9fafe3d2d4e39cc39a09a40382d01636e00eb0. 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/QZPJ32199701.