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 0x0782ba79e9e7afec11e155655f2293dd8689f8f79ce375f27c742562385be9f9. 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/b81c34f9-261a-4e30-8916-0528225d9f8b.json and https://artists.proofprofile.net/proofs/artist/b81c34f9-261a-4e30-8916-0528225d9f8b.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 0x29bb4c1b52415f524678bb29f12eafaf4eda3334d5aaf1d03fb8526c449dd1ab. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ES71G1508935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c0c560f4514bba28d0397871ddbd33c074982a9e89d5ecee2384ec6640a639. 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/ES71G1508946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3399345da47d9b6531554070997672b724ee3dbd87976be2d1fe42cbbed5b005. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/ES71G1509298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253397c136e1c73651e02263b4f9fcf2800f4a7b446fb33accbaf10d5d5ee263. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ES71G1509299.
Cueca Pa' los Chilenos / Las Fiestas Patrias
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be717db4b3aa735d01b0549c41549c2f6ef50e5e0742a17b8a98d3d52feceb2. 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/ES71G1822029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9af7ee955cc5adb12dd22f8f9829ad77deeebdb766e658e0410691f5c847e9f. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/ES71G1822034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28574b2fdf227deb0b91ee9513aa20f20dd4484e71c2d3f985d75df6d72d0be8. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/ES71G1746765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f46ac5ab6061f837e9cfc80bb2682be6011ade1503e172bdac7d778bdc483d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ES71G1746766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a9326beb00d1c5d51b3a302a504c7ea07d121988febb958d839ab9aa5ecbf3. 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/ES71G1746767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde098918df1427010e8a0d18e60f70dd0b49ad36fc82589ebaf46d35e100f8d. 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/ES71G1746768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81486c03667f97d62078ae6a4ad44268e1fe7586141533101ea8175f6f08d08a. 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/ES71G1746769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c329c291770f15ea2e5af48bbb206f666d9911860137796a88306a35d86ac59. 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/ES71G1746771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914371a05dabafce6ac2ce0739ff6ab82c50b719bfb5d05715646158e858d426. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/ES71G1746773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2331a7dcdf2cf009217ba64eb6b13e5b03310097f2e0a0c0063c376377f2f1f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES71G1746774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9ba59beb7e522374384bc38274f5c3fab5e0bc9ac4070402c10409eb236ef8. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/ES71G1746781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413c972f3a977f7f4f813d165ff6f0daca24dbc7a50c966ddccb4d1e2b4c84e2. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ES71G1746782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73b171b7245854d969b09e0d1f7ddd0bcb1e17cf81a875e1da08ad5b16ad4b8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES71G1746783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfac3f897b5519001f1ec9f9eaad1b3558e075a045f339f3adb4d5a1bdaca6e. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/ES71G1746785.
Medley: Te Miro la Cara y Me da Sed / Ta' Bailando una Morena / El Sombrero de Paja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7ee197fed403eda0dcd5ac9f162413dfb15a2367c47b17564ff9a694fdcdda. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/CLPP20700221.
Historia Sonora De La Música Popular De Chile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29f40b853e706d44328a3a7fcfa472e1d4c207f08b4c7cfead01fb793171469. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CLLH22602718.