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 0x8e3e1869c6056f8219a83411024575d3b11727afaf92e90de2b7ebb0025f9e7f. 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/4b49967b-1454-48b1-b553-727f91fc40f3.json and https://artists.proofprofile.net/proofs/artist/4b49967b-1454-48b1-b553-727f91fc40f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Krótka, wcale niewesoła piosenka (o miłości)
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 0xda05441d8a89d6884ac03974cfe3821e9852c750525e81081b8459c82587b9cf. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/PLA282200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32522d206105a0b9a88ca22a795fc8ef9289bcbc95536cc1ce10a8cf3a373089. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PLA282200279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aa7b32672a50fcfee486ca7baccf165fc1552c82ac3392ec5a51f21bbd68bd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLA282200316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b0b0fb85f4bcc05b6807e1d62ace7624fdbfb8a66aab49529b18a925fa7909. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:46:25Z), 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/PLA282300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612eb7390ba2b73467135295b2749849c8a17b678388daaef2063b1ee3ef8fec. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLA282300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81343cb0cb2ea1bbbec4d240e2e1fdf7149bc30e3ddec74573f8813ef2f94454. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/PLA282400233.