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 0x58c359ccf8ccf26cb050647de09849d404ce2b3b8d6ae9032f00e86b6744622d. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2809ffe8-9161-4e29-8b97-dc9501c84403.json and https://artists.proofprofile.net/proofs/artist/2809ffe8-9161-4e29-8b97-dc9501c84403.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sequestramo a Tua Vó e Fizemo Ela Baforar Loló
Ventilador de Teto 2: A volto dos que não foram
Deus é Pai Não é Padastro, Por Isso Que Ele é Ausente
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 0xbfbfcc67557f43a9cd69fab80a80fa4f76af6c9b1a2687478febd9063a695f21. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BXIV82237522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb719242cfeff9057dadce4948c09a3a236be7917c064e19818ec414966ed8a05. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZGLM2312588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4eab6bdcbd5ef49f3057edda30fa020bee0d94d71009be41a59d8dd59c670a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:37Z), 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/QZGLM2312593.
Mother Russian, Vol. 2 (Carlos Marighella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06844fdc3644b62c2d8f68c8aa37f99b2f71538692470601039eb9b2fc0c47c4. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ772518514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2c3563b2f6e4b93b35955a4d76ed765294ecedec13c31723f13023de3693b8. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ7M2590046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454da3eb80797d053771b59342bf3d0b723eeae11ec3fd927e614997233d62be. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT3F92530521.