thumb|300px|Pep Sala Pep Sala (born 17 July 1960) is a Catalan musician, songwriter and record producer. With singer Carles Sabater, Sala formed the rock català group Sau, which achieved great popula
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 0x55fce843b4972230afc8c0293168ea4444ee213ff7a8e0b1d66c67cbcd275b89. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8221cfff-1780-4fa7-903c-76d8ebb4813c.json and https://artists.proofprofile.net/proofs/artist/8221cfff-1780-4fa7-903c-76d8ebb4813c.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 0x50e72cea756a8c871a1a97b582d99fe6847d279eb7dbf9ef2173c6bc74465472. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ES5060304609.
Un Petit Moment De Dubte (Bonus Track Version)
Un Petit Moment de Dubte (Bonus Version)
Manual Teòric i Pràctic Sobre el Pas del Temps
L'Onze de Setembre 2014 (Versió per l'Assemblea Nacional Catalana 2014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc768a60b2b9b25219cdfc6089dc2d3c8c912e6ac7c02ba4f3a832e75325dd8. 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/ES11B1600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8acc70c9de9e6c852c8ce95d60b9d3cc4de6a69f403e9a8dc5797d3d59982a1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ES11B1600401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70b4abfdc1a3d40c46d31bd5aa80a13d9f25e652f4ccd3e9562915cc62bb997. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ES11B1600402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a10f54daf179fbe1a7eea32f65f25d48094b2086282d76ee97ccc2cbf5f791d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES11B1600405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f10c5381f3a1873348e2198289ed8c1bee9d06b26d9e65a975acc143534632. 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/ES11B1600406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4015184940a212bc133ee9dc15d364cef669623b6fd75da7a1209ccfeaedba78. 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/ES11B1600407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04941207c7ff52f223a6b9525cf39aaf73fba01c353f35adf26a7b50e145e50. 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/ES11B1600408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5efdd2bbef0a657e04cf43a4a1ec458485956cd85fe1bc69bec91fb88ecf0. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ES5950601853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39622b192f3075662ea87b23f1e1cd7d060bc46f1d563dc330863ce6fbad303. 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/ES11B1600411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424c7582c8d67b25c21bd93bc4b35d648d0e8e1668eaa23ac8bb9af82758278d. 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/ES11B1600415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ca28b96fb4c5b8beb13bcaba61d74287dc830c30067eceabd646b426c66d05. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ES11B1600417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99c4248f59a48bddb37c2cdcdbe69b45b787201ed263c625335ae7aec789957. 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/ES11B1600419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcc966014ae78c4638e1fa7cd02c83796bd39cf6c8dffa493774b91b881eee6. 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/ES11B1400201.
Everybody's Got To Learn Sometimes (Sospitosos habituals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f95a78eba7838b37b575851ff3eb42384e1dfe87c46c37122412a9eee67951. 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/ES5060306010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5595e7483f0658b8714cf9b77691020e1bf89e229a1371aed7b48c8ce69e546. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES40D1801225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694d03fc43e3805d0e5beb4818ac171f2b0122d43a6d697730ba86009b16ea28. 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/ES6102025711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312916ab3433d7c7dfc0e3d8daf95b086454976eaa404c41a6f9042687347011. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES8651500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e72cea756a8c871a1a97b582d99fe6847d279eb7dbf9ef2173c6bc74465472. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ES5060304609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783e13df925c058938d3f2e9636a660bb1c626199ba6e0a563dbf02993b5e413. 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/ES5950200399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f32464e4377170855c6ef53f312878e5909ba8124e75da2b490d100d17e958e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5950601844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33211dc91c7fc501258b34f79670ea93ad79aa2326bd1d5144ce3b0e4c6b6a15. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES5950200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5efdd2bbef0a657e04cf43a4a1ec458485956cd85fe1bc69bec91fb88ecf0. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/ES5950601853.