thumb|upright|Siri Svegler (2014) Siri Svegler (born 15 April 1980) is a Swedish-born actress, singer and songwriter. She played the Greek character Polydora in the film Troy.last.fm In 2009 her debu
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 0xbf5700f60f475ab6e452fc9508b3afbadd964735eb9d71f1914f69531c7d869e. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86476c34-3644-4e2f-87b0-aff202ce684f.json and https://artists.proofprofile.net/proofs/artist/86476c34-3644-4e2f-87b0-aff202ce684f.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 0x5649ceaee4f87e1921e1a1ed4e68b92ca245992ba0340d198a5bad4dbdd3882c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR2X41571002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcf7b5b3229e7fda06a6058abc886b4588111ce6b47d36a0c371492e2a5f266. 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/FR2X41571005.
Silent Viewer (Chopstick & John Jon Remix)
Saint-Germain-des-Prés Café - The Best Of
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb548acd5075025d79ded9df5b694e3ebe06777926945c40e4798dbdd726212a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEM091000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb887f05b026ca6338a927c3d932f3bea166a20e9aa7f1b0efebfac6d26c67692. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBENT1509038.
Silent Viewer - Chopstick & Johnjon's Rediscovered Remix Short Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0447e0b91122a47ab99262d7b7c4f3e6cc3b28f941d8e185609688e0694139. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEM091700050.
Silent Viewer - Chopstick & Johnjon Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb548acd5075025d79ded9df5b694e3ebe06777926945c40e4798dbdd726212a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEM091000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb548acd5075025d79ded9df5b694e3ebe06777926945c40e4798dbdd726212a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEM091000155.