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 0x9eed1337825ab2359d94e1bae1e188dcbb60e7cafb460e8aeae4155a1a29755e. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a2cd0cc-9988-47cd-a46e-569e25855c42.json and https://artists.proofprofile.net/proofs/artist/9a2cd0cc-9988-47cd-a46e-569e25855c42.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 0xc88048645802f71b62bd576ccd971bd749c72ef33162114519096cb89aab5dd6. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/ES5300205110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584050c3fafa3c22ab041247f630cd0b5dbc6ba87cf90d5eee7abbab5ec2b5a8. 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/ES5300205120.
Tarragona m’esborrona - Remasteritzada 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38c394cc6120479b586141a0f9c96f9221fafc5dc6a5b02c636e756414975f9. 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/ES5302575071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed6a7700340f35fbf52d9bbbf990baf189b034860f758d4acf204bb816dc869. 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/ES5302575072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e2be8a6659d523512c5da0db2fd8d6dbb35b63d989e689fdb91fcd485704e9. 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/ES5302575073.
Pantalons curts i els genolls pelats - Remasteritzada 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd51fcab7bb291d10d6ffec9c6e27e519951017a34edccbda8591f01eb9474f. 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/ES5302575074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e294db391bf37376f55823c91e68889fab852ab1213c0fe390d2f26ebaa5c7. 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/ES5302575075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9255288a7952a57c883cf8bb68732fd6c0f222a4111b6a05b75981f4c44f97. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES5302575076.
Tantes coses a fer - Remasteritzada 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15baacd27493a33e3aab274985974cf63a9b551071443671c7f0abb9b08e5310. 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/ES5302575077.
La vida és bonica (però complicada) - Remasteritzada 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750c643a216c0393d1a3ef8b65355ca163a8db49b93701d60156fd60cff27ca3. 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/ES5302575079.