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 0xe4141528b3be5906b5106be224919fa32a7ed03e1e23d91b83c3de3b2660ea44. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/110843a8-6fe4-46dc-ab41-7972612a4c33.json and https://artists.proofprofile.net/proofs/artist/110843a8-6fe4-46dc-ab41-7972612a4c33.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 0x28bba99fa75d628772d8022b0c5255fb3d69a6e095520c86c5f269f214f77f87. 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/USHM92175986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5e3fcda5ff086ccf695093d29ccba527f2c5b642446fb43df5f8517793725f. 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/SEYOK1769115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bc1f31a36e9b50554fda357a9b49eff7f53e125213cdad2638dfbf45563aec. 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/SEYOK1769116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecaefc49c75adc634e5c2f4692bac947e189176f2be5bb5e30ed6cdb4feec9b9. 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/SEYOK1769117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce020676955723f72b9907e963821bc92fda0d4dd8dd555f399815ff813a851. 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/SEYOK1769119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3457440f87e533c9374fcc1c1d31de7a8a071d2ef956915171fb5f5c383d6224. 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/SEYOK1769123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e943373d0ceaba9dc58ab31235dc01001cb4c3d584ac48bdef2ec96ede41a1. 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/SEYOK1769127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb8ec242fab6997fba4182e7d26c1e50a95a14b8de06e8de69720893fc9e5da. 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/SEYOK1769128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e31dd6f71dbad015f000c9985e8f8f81cafb7ee80240a8445b3fa5358e1e172. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/SEYOK1769130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526ab22e5a456b496aca2b05c90dca9a18b1bb0192a3a36748061ffc1b75918c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEYOK1769131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993d3c7a1349d8953a1f0ebe05e54eae31e797040a13efdab6c5c8772df556e5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/SEYOK1769120.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Avísale a la Vecina Quien Es el Más Recio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab170aef7a23493feef4c25f7815362e261da62bbe3a3acba6a5f663fd53cc5a. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/SEYOK1769132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44ee177ff6a585d700835acdb1a813f17ba7a04d584e6499df13df9b291580a. 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/SEYOK1804139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc018453c5b811a58073455e9c339e0622fb7f1304ef73fc73fd98fa28869e134. 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/SEYOK1804143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414c6ca8d2104b4a6b2a00fee3fa47ae78700fb03b68828e4ce456bc53e90edf. 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/SEYOK1804145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01105ccc3e339a7f602bb16b639045de0b3831adbaf413eb2489b44828c1c540. 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/SEYOK1804146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdc3d7d49702d95727c006bf1e5f11a823d9ee2c0f102e19ba0dba15ff8fb42. 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/SEYOK1804150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f48cda9bc8abaa7b89d2aed6c2352df03a04e9b9e055796231eaf2b8f52375. 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/SEYOK1804152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9afac8898e8b03671a6420dd8d88c03576ef05c4f33032356319486e100d38c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEYOK1804154.
Así Es Como Comienza (Escape al Purgatorio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbd2689eaedbc3c8c05cb0afa386388365fd6589b263daa7311caf15760d6f8. 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/QZNJW2376438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c26cd3579f79ffc9a3d2833c9da15b43c1e8df423088ff8fd99f613f3216605. 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/QZNJW2376439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57053b09af6a5d92d9ec328966fc15ca81abc8e648c83ec83f1771f1c72a10fe. 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/USX9P2050728.