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 0xe7fdc909c554f4f31182472f9e5e52482507ba536ec5953a8f1efc2a132313df. 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/e5ea4456-8f6e-437f-ad1f-b01c3b979a80.json and https://artists.proofprofile.net/proofs/artist/e5ea4456-8f6e-437f-ad1f-b01c3b979a80.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pop Pa' Tu Crush (feat. Only, Sesentay6 & Hens y Delgao)
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 0x0860a4408fd54dc88acdd998b594cc18e8e03b91c143432c9e0fa59db3483011. 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/ESA011931873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125c2e112501f9b9727218aa465a7bb3381be573f044814fcd734ee223e9bd89. 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/ESA012023863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba6df4899a106e3fd539054e0cff8ebdb6afd27b72512e633300ffc493fb119. 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/ESA012080145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3266dc9c7b88abccdb023820d032a15a3b7d6f7e33babc2ff9758db6fd8257e9. 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/ES5022201823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18141a679aadf6e95ea18ec687acf4df36b01c5c4c394d4b3faa4078f8b7e94. 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/ES5022201824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51770e806f8305c439cb5090d8069cec818a7e12e2eb70aaff7b7ee4e069539. 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/ES5022201825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c3bd707dd17b7eaf40e995625e07a148e00ca0ff25ab00ceb7448453e7211b. 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/ES5022201826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388362b1a749f70ef685ff6d9ba8245efeae175c0f145d61aa3da7cfc4cd34da. 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/ES5022201827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3ccf688b7691c523874a3ed8aee2284f1380d0e0a38e89c51825909a17bfc5. 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/ES5022201828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544e552200af8ec473fb8f47ac9d565f26c55a8ea93d3baaae5ef7c2799006f5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:53:35Z), 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/ES5022201829.
Mucho más triste que tú (feat. Fresquito & Mango)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c51ab1d793f4eca4495cf164238cc4d9d36cf20c886f248afbb46535494fd12. 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/ES5022201830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdce2b4f36bd10c5b0611a6957fbf2851ea08a1a1b73f50af31e98bc9298a0d9. 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/ES5022201831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124b529bd2d04f7217f3120bd66b499d6f8e571b9ecf6e520b2054d835caae71. 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/ES5022201832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729f1e709c8680afcc3b18998e75bd73d3783f4ed66f63c57fb371eaef01e82a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES5022201833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef489aaa1262ccbdf7691fb35ddeedf9e0f6a0a050dd45ef17bb9393c8d0a9f9. 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/ES5022201834.