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 0x9df0f402d060b8b08a27504196e52b33267ad5326618259de512f50518d93f59. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf6ea75c-a23b-4021-9459-2d867d7b6cc7.json and https://artists.proofprofile.net/proofs/artist/cf6ea75c-a23b-4021-9459-2d867d7b6cc7.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 0xec79ccb1fe1ea28ce66271ab5b1af56b93d7d7642be2a005c54be226bd72aa87. 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/MXF601500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15975efe97ca1715ee8f940fd2ff0cf74021bc7e79bc134c62aa3f0693e72a5f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MXF601500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817bc8feb475b0ebc95ab71c6b0f9a8ccdf8289392ca9e0fb0f916aa515af7af. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MXF601500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955c0035c733663feda4fe1ae7c05d1df15542603574bc8f003853d3fca1b337. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/MXF601500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80acb2df7d45b71857488d8cc930485741b63b4b809df5396ced72ffdfa7a567. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:43:49Z), 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/MXF601500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c5df4e1e66f204233fd093b64d7134b64feabe95e2bc6af125ecedc6c127d6. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:02:46Z), 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/MXF601500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffedbf9f2098844dd49553d32a72bfabe9e21cf3765dfa47f6a38d16419e0eb8. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/MXF601500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80edb658f3dc3876b8148356a2f6bcd7f76ecf702abfce8fb9b97d6640a2c1f8. 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/MXF601500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a70899a7900943b07fb2168d36deb8722a2ce42a55ead26f568d5aaeadf1fa. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:55Z), 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/MXF601900515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab2187d6450a652cb679b060fd13067428ab050bb4b6781d773670917453ae0. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/MXF601900519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce81e3facbb3c59f32fd3d24238d9ec82562c650487e6d39860dd33b299f98c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:28:09Z), 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/MXF601900521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ea8c7c013da3299fa89d275a745333ddf38b33af016fed04e21b36f5a8d0a1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/MXF601900522.
El Buscapié (feat. Los Cojolites, Stephanie Delgado & Caña Dulce y Caña Brava)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f5a1c40f83c29008260ef7f5276e289ceaa5f9c7b2ab840acefad63a5fbb92. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGH1904512.