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 0x112a2dd53beccaebfafe3865bb2495ef7230069bbc0571219dfc53c3644bca15. 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/11ad4109-d8e6-4f66-9625-1c121394f171.json and https://artists.proofprofile.net/proofs/artist/11ad4109-d8e6-4f66-9625-1c121394f171.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 0x7998fb547f4c6667e31d546be4b709fcbc4652741c5d2aaf3310e3ac8c0a93bc. 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/USLZJ2592569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd44f92f2e22e5751fa7df29be7e922f72c77d6cfba372cb35d05612322a4ae3. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZZEB2450380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d0e78bce8da2a6b5dbe86802158938b3ff7b1e550bec4855d9ddf4271125fb. 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/QZZ8A2435817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574770f2e993b52e7fd84fffcf2e0feee22e24fc415860a7131c617d3ba6a7de. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QM42K2481229.
ULTIMA PUTARIA DO ANO 2023 O BAILE É NOSSO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ce1e955d8f0f9fe67df962ff03494a4cae6eaceaf6912820f3490aaf4402a4. 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/QZKDK2236317.
MEGA TROPA DO SERRÃO X TROPA DO TUBARÃO 031
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e09e45b416f5bd2f4f79e9ae92bcc5cfeafb41879236b44e955973f0ab21cd. 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/QZMHP2314666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d270e60c77e45b51d57d794851f4423049bd2189a2875b48bd809d34a8e313d. 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/QZMHK2395261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c10f0794563bfb0e9e2edeef83d20ddb5f33b3abcb5d342fdd6f6b22a37528e. 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/QZS632391982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8647ccb33d00f1b97ad5c8423807c0dc68739353b8734d7ebb7868be88e91042. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZMHK2380515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432b70dc20c6b63e8851954d5731f5dc4f041362f1a78b7ccea66941ba7409cc. 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/QZMHM2365136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c0a61254b509bd1ec2f564a16535db0cc71e4f670bd8d2f709dfbfb0f9f575. 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/QZMHK2234957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37e8ceccaf7a318b2200f4cb421ceafadf07c97476527f1b67ac3d243eb26e1. 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/BXIV82217001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed5b3cf093a63dd73933467e0721d15c6095482d3eb7fdc2100b4c11df6a717. 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/QZEQU2208342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49afab5f0863201d628982ce03b32c9d4b89ec94f368b3a03ee97973e1206c2. 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/QZEQU2200825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad631069d6854472f2e6211e246bc7001a2e888225856b6e041e8a73eca9fcd0. 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/QZZ8B2468408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37e8ceccaf7a318b2200f4cb421ceafadf07c97476527f1b67ac3d243eb26e1. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/BXIV82217001.