The faixa ( (central), [ˈfaj.ʃa] (Valencia), plural faixes) is a traditional Catalan clothing accessory. It is a sash made of a long piece of cloth, worn around the waist and wrapped around several t
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 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 0xd3e644a86def0fcc72a995bf91093e637491ee651a520cca830c49ccfa0e6c41. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4ccd664-fce0-47b9-b62d-43da55025be5.json and https://artists.proofprofile.net/proofs/artist/d4ccd664-fce0-47b9-b62d-43da55025be5.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 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 0x9b0c9889a70a7e7b4f159bc01ef02046bdceeaff0c24d95459115b3130b39d6c. 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/ES6102300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208b579b819db9402d65fbc272f5c588bcf080f4b430cb223c250ed37ba43973. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/ES6102300686.
Tant com l'enyor de la terra (Cant de batre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb49dc8a864df3e74736bf0a479b8965ce19057a9a211f697947decd5160981. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ES75E2411473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe212c748a8562f6c204e8f0fcc2cd59243742eadc33a3d50d9ed4bbb96af040c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES75E2411474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0c9889a70a7e7b4f159bc01ef02046bdceeaff0c24d95459115b3130b39d6c. 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/ES6102300406.
Tant com l’enyor de la terra (Cant de batre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafe6a90d7308fdc666880b1592210efc53695a469227cbf49ee96198aa3c37e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ES75E2405819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd2ea90580027d7d07808469210857e7cb52325cf8cec84c5030b48f3071a45. 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/ES75E2411475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208b579b819db9402d65fbc272f5c588bcf080f4b430cb223c250ed37ba43973. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ES6102300686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2cbb2087bf968f8fe665340724777ac21dcef0ff15c86f677072f53d70ab8f. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ES75E2411476.
Esta casa sí que és casa (Cant de batre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde086832c01588486dd6ee2b2b5345464c7baaa6026f5106386f2f762c82001. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ES75E2411477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185f7fe652c56c8d11c0a7e9ea7b227b005f4483a86536863044caf2e5635712. 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/ES75E2411478.