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 0xe62de76c9f3d4b18e35d49861df3102d980027fbbddc268998336dfe6f9b3558. 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/b81c8204-5016-41cc-8119-12f12ffc2a6c.json and https://artists.proofprofile.net/proofs/artist/b81c8204-5016-41cc-8119-12f12ffc2a6c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaafe9bee2296513fefab0c1d236d8844d6186c230f24bc8f0e2b188659926e. 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/ES6921201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b196c2c70dbeb57234c9d73d46595351a4271a078fa8450640fdc3dd258c71b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES6921201051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c0f8e991425aaf450ef28fccb7019e559c27145f2b186ad0a8f690c9b67675. 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/ES6921201052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d55018a0ec599d676d39d4c209138391c4fd779a7d77f1e80690a556a8f51c1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES6921201053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb541258966ca07587986e3e3d880443f641090d4857e3c0a3888ccc891d911. 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/ES6921201054.
Bienvenido a Buenos Aires III (feat. Edac Selectah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84b890cd449c7018e8da348e0179065cf4247318d5b8e718060709d4458404d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES6921201055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde379e520cc2977fe2cb30c81f6e3538a78facefa21468a92360ef47393e83cc. 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/ES6921201056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262446476e4796f4990471ba0b108ca2c646b3367f0c53a9d96ea6c5163cc26d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:37:33Z), 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/ES6921201057.
Bienvenido a Buenos Aires III (feat. Edac Selectah) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8938b92965d180ee6748afc3a161d294d45122c790d51c6cd5da54c05ddcf4c1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:52:10Z), 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/ES6921201061.
Bienvenido a Buenos Aires II (feat. Edac Selectah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4960a70d0b53e9f5e275cbd79d8527afd69b11b869483646414c1693d6667260. 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/ES6921210007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605fdaf692ac1eace40f66919077b8f3f6a9817155fe9ec785a85fa3d651c77e. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/ES6921201058.
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 0x5ae2dd9b0d69bea93dd7d57a6bad2f59f1192d41ec401f32b75b6542dba3e1fa. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ES6921201059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318c809c68f1bd1bd2bac2ed8d4245709d11d4b8239e81ddbb1f5b5de9c83d5c. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/ES6921201060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ae62d700e68ae2ab2f6725e31535a4c30af08c10dac14d836e7c7d91256514. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/ES6921201062.