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 0xe2572f6b8da4bc969d409df4b04d810f86530544823fb2f520c0f46f2bd2d630. 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/2b403db2-837c-4a92-b0c9-a382d5af89f4.json and https://artists.proofprofile.net/proofs/artist/2b403db2-837c-4a92-b0c9-a382d5af89f4.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 0xa8c5ff0a47dbc5544204f6be82cbdcb98b8f4907d3556ef8ebe8b08aef0b18fe. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRA401600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc34f5fdb783efd3146c7417c9d3f7e3f3480e48c43cd6fb3b02d8ad883c5c60. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/KRA401700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480239992a752b93b717a2b33990f1c647b5bea00763296df7fb3ed8e3e143ec. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KRA401700182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8859a234eceb911392975a16a8952806133dd777c0a8afa4e0aa84ae5b4ca293. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/KRA401700184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2006d5d33acbeb4d099c9a28e1702f1532f0bed84b941f8e385ebd19f8693dec. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/KRA401700183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72dc409f6ca15cec4bf02945b1fb479252772d773ed6b152546cc3cf9f0df57. 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/KRA401700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc68df82169ef7fd1f81c48781579ad2b26b9673657d349fda5f224766bbd649. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRA252301140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f003011e388577c387831556dea4b1cc13c60ae0af8bf30f0cfc3269a4fb4d8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:25:04Z), 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/KRA252301141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43fad2cd9498fcc74468c46e5d226bc8cd9f4068f8b92db4929413f46a7b458. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/KRA252300829.
SEA SPARKLE (feat. HUNJIYA & Choi Junheui)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9b03b39703552ddec956bdf0f2719a6870a4e2d925da1442c12a8859b3dfe8. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T22:58:46Z), 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/KRA252301143.