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 0xee0a9afd7fb3a21c325c689947bcae82c224073c7e37d8eafbc2014d164d1a74. 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/e5d5665f-cd4b-4b53-adfa-1d82b9ecdf84.json and https://artists.proofprofile.net/proofs/artist/e5d5665f-cd4b-4b53-adfa-1d82b9ecdf84.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 0x3eae7b4b58bcc500ff7100c621f9e0ac67e92b5902e406139e4e31aa9fa0a425. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/LKA000012110.
Wathura Kale Natanawa (Best of Chamara Ranawaka)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3322110c21149cd105206bc89e65ac42e307e221b951a077c4f1171ee02687. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTLA2480951.
Thal Gas Pela Eka Yayata (Best of Chamara Ranawaka)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2339077e300ef70c2bde92da4e77a871c461bdbba41878f992ec9b207af509fb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTLA2491457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a2ba10c1267eda331d2941836011aee179aa6d9504a61e9783a0c78896190d. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZRUP2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf943026b77b096ec6dd98c393c136a5fb544a4ac78e232b21b3134097d14c7c5. 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/QZRUP2200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33c4d096388b975ff0bfed3278a5db232b4737c73bf8a5ee4abbd2f24b8808d. 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/QZRUP2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c93f61c083e18536005a9a41185f8e2fbefd2fb5ffce4155d9039a92ef12d1. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/LKA000000586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac27f96b299afc9e6bce0ffb6af44dbba66b89943b443db1c9544af577a38ee8. 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/LKA000000588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5600d811a1477f648a97c41b100d183b9ef43be43bacf0e9c1b5025a385f628c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/LKA000000595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e7a60292b3a1ca3b4c0d1e607aef6c721025dd068c8d39a0c12fe6b236f754. 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/LKA000000597.