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 0xaf1332b2b49719006a8a8ed759a2fa1698da1bfa29044bfbd5861fb40a638af9. 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/fb55fafe-bc91-4403-8eb3-27ede02f52d9.json and https://artists.proofprofile.net/proofs/artist/fb55fafe-bc91-4403-8eb3-27ede02f52d9.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 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 0x5b538636337b85b48427099776d3589a5f75e3726314c6e635e45cbeb8a8827a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/FRX762054607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191515b31add39546aa06161d134cdd4b70012412f1a02f9d1520483f7a47a3d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX7852200234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303ae12b7d5e91ffffff311f36df449afd78d140d918c1afacdf82a35503a8de. 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/GX7852200318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c45e846da8ba4617949f2004ea13f4df561c33876e8b126bc1ea64278f0c6e. 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/GX7852200320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfb177c6dc73edfed64b05ef507368d4d9831ff8376d433bdc94569df74d3de. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZMHK2270572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b683b3aee75d2b975edb2cb90162abd344edf31ad010186f38c2d0b855d7ca. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/DEUD42443661.
Kismeti zemren tane / Veç dashni / Sëmundja xhelozisë
Me nje vajze kam ra n'dashni / Safi Safi Safete /Unë te du ashiqare
A pranvera pranvera / Ma jep dorë vajzë / Po të pys
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb68910527502617df0cab87d4185906b90cf07954f961bca2dbc4c04589a1e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DGA0T2451464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f07085a0926b3037d21fb2fbc07376d0a16609390e877f9840210e1e4e1a79. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEUD42561314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ad8ab8252d48dd8a2c8a5449d7416eb6f96db642a0f18a79f191b1ad0a830f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTAX2589325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced6152659982c5a240038f5d156c532493e76fd90c5cb461bd112037f1f58c3. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEUD42566552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddec434afc18ac8da9cf5224e505f93627ddfa17c1804f95f043182388224c4f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEUD42566917.