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 0x66dd8f254e0d154a2ad929bb014f7fa8f9213c9efba90da819c6759ff8b59d2d. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2f00fe7-1997-4fe7-84fd-c67ef0a7fde8.json and https://artists.proofprofile.net/proofs/artist/f2f00fe7-1997-4fe7-84fd-c67ef0a7fde8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sonidos de la Naturaleza. Aves y Pajaros
Canto Del Jilguero Cardelia Canto De Pajaros Silvestrismo
Canto Del Jilguero (II) Campero Silvestrismo
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 0x1351c5b47ba6f7cfa468beb566a296ebd07676184b989090635e58adf05509ac. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5631000049.
Reclamo Para Tordos Cantos De Pajaros Zorzal
Spanish Timbrado Canary Song Birds Sounds
Canto de Canario Timbrado Español Sonido de Pajaros
Efectos De Sonido Naturaleza: Perdiz, Canario, Jilguero, Tordo, Roller
Canarios del Mundo. El Canto de 11 Razas de Canario Canaricultura Serinus Canaria
Canario Timbrado Español Canto Discontinuo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08deb664cce416072d454984a62d0d03a7c3fcb264cfb6fc099403708a76529a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5631107863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a5d85ffb0b0370dd3384d0f88c8ede65bc2964887332ca744319bf33713615. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ES5631107860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b89aebed1f028e5a54af2787121219bd868e4d02afbd093f05c38c91a1ef1d3. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ES5631107858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765c0bd61b2dd3e3096e850969108c111c96950a6cf62ba2116ae992ef388c44. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5631107857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9130c05d00b5347267b8da0aec3cc19e2027927e2b8f29ab58cd98179fe0b1. 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/ES5631107862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ecb993a9859a55986abd5bd7a0d34220056f953e7766e5fb70e7047614dd2e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5631107859.
Canarios Silvestres Nacidos en Cautividad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fe63c064a290a157a32b544a98ceec9aca3fc2fcc518969454c64c6e7557d7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5631107868.
Canarios Silvestres Salvajes (Caldera Taburiente Tenerife)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ac99ad4f631e2a42df7958c0abb86faaa55939de71e1e71f5b8524a6a46087. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:28:28Z), 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/ES5631107867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffb915a49a6afd1eb9c15665927ccf557dd4944582bbb28fddbb3162837826c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/ES5631107870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b041658b28198968076389d0c92a992d036b6a24c6e1c002bd655cfe1bc89f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USA371471338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59336c36eec90643da4df91733984c22abbd59606fda62b8df08268e6f9f9f18. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USJ3V1437995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab03aa2823da606dbc07e8def0b6fafa01342496754dd6ef32f38643a9510010. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USJ3V1437996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9069ba508cd99e375cbb024f65f1ebb173069e56770bab68481e0499f1e82b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USJ3V1437994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d747bd8a37cce161ac76320f5096354eac74b31c786cf5d307c116ba5c2520. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:00:21Z), 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/USJ3V1437993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb630d7bab3b8e603b9f2b1054e3291406f505d3b2523799e59f8ab500096a4ad. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USJ3V1437992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0d8fbd17a622b1d948ccbde04d1ab77e28a8d9745b105751aecf9a205cb84a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USJ3V1438017.