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 0xb84d23cafa643cfb5adf90b8ea9d8830f7d2b3f47148ed4958d3230ca3e79f4f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79da89d1-572e-4241-9917-5803c95553ae.json and https://artists.proofprofile.net/proofs/artist/79da89d1-572e-4241-9917-5803c95553ae.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 0x80f732648f7a660f27255eabfbe1600c123ca1246fb54fa91819c3f32984bb52. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/US7VG1547186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874e6a0e3ad42883ce892cd3ab7a061b77b2cf73d37038f0a6625f13c87efbe6. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/BXG6R1700113.
Vem Sarra no Pau Enquanto Eu Fumo Meu Haxixe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1662f39c04e6041f86c750851b6d460fdc977c6f034647c74582df1a7011a3c. 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/BCM9B2401823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c79cdc896164ce06a2d8af1c64e71f417dcf05ed8d91a1779dd1dd13d39334. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:29:09Z), 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/BKR2K2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15262727afc4ce6a2bcec39d8022af76f0283d41b72e208505f3142bd6b42122. 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/QZNJX2356044.
Atabaque do Doze (feat. MC Nego da Marcone, Mc Lustosa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20c12789831954aa6b8b5d7caed5407b1d484452d824825cf27973476dfb4c2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCAPW2300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8082ea19faf56d9eb19ee55d0bb04363ba8eb61ac3cd397f4eb87ff5a36dca5d. 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/BK2242401278.
Vem Me Deixa Siliconada / Carro Bomba Cheio de Puta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89348a2f9e613ad4831c4d07b918a1596ceaed0a0327cb6bb696a41525534b6. 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/BKDKM2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff0b2b192c3c35e0dc6a0d71059ebe847ebea6810006bfbb1ced5b0a421071c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US7VG1547144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbebe0f96036e417a505cbc42e4af5e172b15814de860893c6640386d922eab9. 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/US7VG1547145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f2a5ff25224f8c587987f80bccfbbe31a82a974ed3027e3fa7292a6eeba442. 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/BKR2K2500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4381deedc21ebb96895b66c09a2596165de4b8788edb049e36cdbf45f89a705. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLM2564825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f6f65d9c563b54ae9cf3d45d10e5fa5e3517c75562111a47e346cc6cdec5f9. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/SGB502423723.
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 0x3ac47912c35e147036aeecaef671fe3766975c0e484cf8255729bbaa1fe48905. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/SGB502423720.