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 0x6db23f59443d26ab3f651cf79a68310aa4297356cc12c145e9aaa8bc54cc16d9. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bf5478e-a898-4111-b485-1d8fea6a243e.json and https://artists.proofprofile.net/proofs/artist/8bf5478e-a898-4111-b485-1d8fea6a243e.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 0x5555bfa96f3ec83f08711355eb27eaf6e6a9f5bd0517ff5086fc6486ce642641. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USD8D2427001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500607c107f4f07bcd448ab433b3fc19f47a197135bebde1fa41c342f2e83b09. 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/USD8D2427002.
Subindo em Árvore (De Qualquer Forma é Grande)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0b67461092cab92952a630f364e0405c304a3779369f945a3264ec8f0587d2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USD8D2427003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f7aa128916a6b0e8a1fb9df430526ecd263204b0796f9c79da88bad0ac19b0. 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/USD8D2427004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef2fa656ed586ed3a42210ec744e7927fe30c080fcf0c8471e9e6d836cd45df. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USD8D2427005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10c3540b93b0cbd37decef5ed5cea61ab6c0a3964940a1dad0bf9a15beafaf8. 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/BX7MG2000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb10c6cc664cb0a303ffb7e0c96f1b53160ca02f9ec91b3494e82a6e8a3224a8. 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/QZMWW2498356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb10c6cc664cb0a303ffb7e0c96f1b53160ca02f9ec91b3494e82a6e8a3224a8. 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/QZMWW2498356.
Dropa Como É Quente - feat. dadá Joãozinho, Wong
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc786d7804e9e04092a67627e86f58e27630c2afff6e4bff1ad6ef2d4a50affdc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/SGW502224529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5555bfa96f3ec83f08711355eb27eaf6e6a9f5bd0517ff5086fc6486ce642641. 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/USD8D2427001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500607c107f4f07bcd448ab433b3fc19f47a197135bebde1fa41c342f2e83b09. 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/USD8D2427002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5555bfa96f3ec83f08711355eb27eaf6e6a9f5bd0517ff5086fc6486ce642641. 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/USD8D2427001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef2fa656ed586ed3a42210ec744e7927fe30c080fcf0c8471e9e6d836cd45df. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USD8D2427005.