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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae87fc5290d1c532f4c667390935d9e05000c8c58711f0693ba80c94230f4f9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66d59c53-2072-4f37-b9c7-31567ff90a18.json and https://artists.proofprofile.net/proofs/artist/66d59c53-2072-4f37-b9c7-31567ff90a18.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac36d49c99d896bf2a48886fa17c0f5feeaba98b93213ad1dca9bcc9cdd5b2fe. 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/QZEQU2122436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eda710a72cc1bacc0e352c9d3e0beecb2a60b700644914f308f7b02ad5d1cd6. 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/QZEQU2122437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e64d1bd64d0fd68fedc4eac0f5adb6ee1ddc1d6d6f71660c2bcbcf1a587519. 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/QZEQU2122439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb5bbd526259703f28d7875e2c39bafe598d4fbfe9b0a0ccbc9a14218b7e728. 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/QZEQU2122440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551a2d42ff87fd059e259b963fab621575acf1cadea22f91bf68b10217628934. 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/BX4IU2335024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d29bcba7cb81844060212a01859f9c8cf4fade9456e5ea0a51b751d6eaad741. 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/BX4IU2335025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50624cbd147fe694c01a06c222fc72c800fc8bc202c3dcdca4b4ecde218d2930. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/BX4IU2335026.
Coloca a Mão na Cabeça Pra Não Peder o Juizo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222a1716068cc46014587b719040f7460c780be13d61592dbbcab3d197c351e1. 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/BX4IU2362320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4ed28af74180b48cd96ce529b644a56187a3bc35c97e7eedbde9757e5227b8. 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/BX4IU2407988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f6116bcc68ec63ada9a9332f4f8b51a5405d3e2a9094b5c7ed648e6d518fb0. 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/BX4IU2421475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b9fb0a9a391337d514607b45c5dc8a5ce94b0e02664edf971635dec2ada25b. 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/BX4IU2421476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebed948cc4aa119f67d90dded00280709ae4838d98906e2169b6c190a2dbc1a. 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/BX4IU2421477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92983f17e70e237b0c66ff2faba2e74593b63d40caae025504ed15a86b06595e. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/BX4IU2421478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a84c6cedfd34d9502790dc92d6cfd3ad62df7d2364dca99ccbffbea72a1b41. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/BX4IU2500421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd029f725adfd42b824e0e4f11dce2382a504c069b0cede43c372ff82eea83265. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/BX4IU2517799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0022933de30ef9f983fb3882ed52577a93b54930a26598be5253734190ab928d. 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/BX4IU2517800.