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 0x09ea5422afc929f2ef45aa8c44e7bd813725bec7c5f7d8f90a76eb61d59d4116. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b60a0392-fc86-41a1-add7-632bf529a118.json and https://artists.proofprofile.net/proofs/artist/b60a0392-fc86-41a1-add7-632bf529a118.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 0x590dc8135d38da8c04a75f05dcea4e532a719d289e9583f42ed645f45659fa40. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GRGCM1837903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4671ba29f9e976cbfaee9d9b1c1dceffcf5e27f2cd7781a9c2292e88f30ab719. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GRGCM1837905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8707a5bc0c2cac2963d009dde99b8686ea59971fe5eefb3a579d1e2a18e07d1f. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GRGCM1837914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a352c908729806a5ab65f6459c88c458bf9e6c45849b836baf439bd4ddadf1. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:29:58Z), 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/GRGCM1837919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c743f3492e287e8b4b83712f30216f090acf96482166a70296417638af38b3. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/GRGCM1838302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595b59cdb1e67e0e0fb18f45833ba5332d5e5fc0a429a11fab9924b711cf2e61. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GRGCM1838303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bb383175d81d3c59e60e358e89e3de603748b17ce0e31ebc67af29f6be1be0. Chain 2 (Bitcoin): anchored in block 957622 (2026-07-11T22:55:42Z), 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/GRGCM1838318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d119dde7cd3a891d83cfa256029d4d0512ffd1abbc73fbc1722de8cd7b6e9b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GRGCM1838319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d311dbc8b941e87160e84014730cb53c94fbe90cb33b5fae98744085c0e5ee. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GRGCM1838912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616d3d04966a6160665322bf894c5f69d0938ea8edc3dea0880f609705c9a26a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:48:18Z), 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/GRGCM1838919.
Orquesta Huambaly & Humberto Lozan (2006 Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247ab5f302e7d15f86ea6eca04bb2aa930b7890df3d6e10badcdb9c4f237217a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:26:21Z), 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/CLBB25600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87228b342b7ca5d996e374e1731022d0ec3d460b96e53cb9026df5d9bb6df68. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:20:45Z), 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/CLBB26000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c775e2554703c784a23ff2f9420642cb11cfb1afde6ffdc81e735bde88e6fb. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/CLBB25700113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6324d59072c9a130645fdcefd446c6ef5bf95f887a5b6a2b5f13e31e6f712981. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CLBB25800257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf622a0b4001c4e29db38e2c66bd61b91221199192789baab9debaf387f8c6a95. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:02:59Z), 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/CLBB26000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300b71d7159a82514ee8c151a1cc72edb387722c578fb9659ec410a3b587f0d6. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/CLBB26200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314676f9011d2439e1bf3d66d59336be99252a63410eb9afd9a2dff44a40f896. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CLBB25800344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca3f0f5d951ff79177093e55973d026f54592aa6ce896b5086f0d897f596bef. 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/CLBB25800258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14025dcbbc5e39a0b33fbda9fd87e016ecb92b00b9d9ec1b3f9dd4a34f827e8a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CLBB25900163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5d03e1d6c15564d97431f0df94f37f1f12fee5249dbfdfdbd9c8d28e363df8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CLBB25700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7cef055991404ea96a50e829311fcd16147ff123c65dd1a77579da1f7529b4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CLBB25900162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e3e1b845e42263c7db1d45d71db216c3fb19edb594ec590a77d7976fa29081. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CLBB25600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7643ac84ed8cfbb92d9c550bb2b766b41a24c9db91ec96a0255a5407a0174e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM6P41732506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c95d23ca934c944a3a8268a460a4872b2460cf10dc49509b3de24c0b9a6e907. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QM6P41732507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3509f57a30f3087a542fa4b9072c67753c862dd1b0c9c43fda04222d2f28a77d. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/QM6P41732510.
Tiburón a la Vista - Que Me Coma el Tigre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb9cc35d18db7041ba9c3f0f56f050e3d9da0b3633dd933fc7f6a99b340515b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2106159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd108ce80af77fb5245beb41a3ec0ec0ea18aa08590ef0f8d11e61bdd450cc839. 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/ES71G2106162.
La Blusa Azul / El Merecumbe / Que Me Coma el Tigre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaf499761dc7d80803d38d584427ec36b59b7adfe8b587ca270553b6d21a957. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:23:27Z), 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/ES71G1820722.
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