thumb|Cordeiro, 2015 Edson Cordeiro (born February 9, 1967) is a Brazilian sopranist countertenor and pop and jazz singer. Life and career Cordeiro was born in Santo André, São Paulo, Brazil. He beg
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 0x4cbab0974720f7334b10b5e0851582897fc727ed49a0a1b9f23d0cf307f2c00e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43e94fd3-9292-40b1-85c2-f641a5ef2b8e.json and https://artists.proofprofile.net/proofs/artist/43e94fd3-9292-40b1-85c2-f641a5ef2b8e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Estrela do Mar (Um pequenino grao de areia)
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 0x5f68fbae03b23628213e0e9777c359da6efc2d5f3a11e44a2438ca5de03450da. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRSME9400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0312c87a1062c95a40a2edc09f0dfd80cd6eb2d9c116bebf78bf3409eefe429e. 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/BRSME9400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab9ae57fde3ab5b047e9f3820e1dd755faffe950aada53d958dec63d5b73b54. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/DEKY20800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a2fdfe5f2bccca2d83a80f2fe353442078911a95a67a9fbcf3397ab1379c06. 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/BXD9C1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd96258f3a2c4eff30946f6701f8a1cd2af9ad9412a5e26233eb7ebf30d6f61e. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:45Z), 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/BRPBP2300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe645170144f3a8ec2bf007eec1eb98fc8f2340e2136691780b32d818841d6561. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRPBP2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6878c00523922a266094ef37ea7f2251033a62a34673af5ee6037276481fb8. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BRPBP2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98649054db6bb26d7f503188d666a2e1ee813af7303ad523dc6c8ce86426eb5c. 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/BRPBP2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834eba79a456d01c91562e2269dadbd810a7ef3f69412cc4a8cb80145a562b52. 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/BRPBP2400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4887f5de009f9f9c582cbcbaa067b8c202d47712bd11d9f7148172c447d7837c. 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/BRPBP2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea18feca486ec8200d6d93dfae764e96696c8fabb7caef622247a1f135d94d1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRPBP2400059.
Boogie Oogie Oogie (feat. Edson Cordeiro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b225eeb01c8b20abc9d58c1feb4d59a3231c5eb4f20596f5d0e7646aae5e37. 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/BRSME9900478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f80723e847c1480e4d4052959b54ad4208e6315c0585d2805c666746b5a2935. 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/BRPBP2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65e896b784056a12e0ce77d69c70ee4fbd545aaaf03a893c40bf03041e0e850. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRDEP2500091.