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 0x41225f9748643b20d51a3b3bdddf5c3e539e9f65811d2743c21c255d7d4f1256. 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/f95fb6ee-f452-4293-975e-d4078ceb0a68.json and https://artists.proofprofile.net/proofs/artist/f95fb6ee-f452-4293-975e-d4078ceb0a68.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x37921ad477bee25477c5c5fc54ea3d9a6ff92bb59c0fc0c7ccff7d834fa1414e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/FRX452102430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8af4f0aec7abe7a0582ca6b7c630dd1d904e6001b5d7cdd54572dcf459b1f8. 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/FRX452120390.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997d28c41eb3f575ae179e707555e5f7a7c973720c6e981d692b6bb896a46017. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BCIH82203839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365b7d108112d819aab2bc46e06a23dbf501321dd4956f1f622c39b587a30b14. 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/BC1U32200594.
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ELA FAZ A XOTA DE IOIÔ - QUE POPO É ESSE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a5a259d585e652fabaef40fd69c5e68137834f96e9c87cebfe5081880b4b62. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMFMG2367743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926aa9727a7cf49deca3f045f4c469062e2641788726081c813228e71edfc1f8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BXG6R2100939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe039c7fd7f2c5e46647b609fefce201986aed4f57570a664a75f87a1cb2eb5. 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/BC1U32100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c62992d9a9f30935c3334a8ffd31a9669782c70ea96d3dadf46586d939a108. 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/QZGLS2413993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471eea03d6689f45b0a5e42b6093c89e7538541946d632d0d8816fd06e9eea2a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZGLM2443689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910ed2ff8d243eec097e0cb87fe06720f476905c3d49549ceb4c7a6362adea6e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/BC1U32201103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3752a452ca873d7d8f52c81cc4f9748c8c3b93b0641fec929751d89e9fd8af87. 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/BC1U32100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8fddd79b213a11e3a37aaf69f7f6ef2ba6b91e2813e0000b7bc64c29030823. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9L2308247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7340bbf6d9d1061c2e7e50b8bf4231f303c313b7fd144c06f5d62ed10035244. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BCUWS2490165.