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 0x8b40a64883db7cb7a456f5acafd752d29aa262a92f691ff0cc1d371ebce731fd. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f74f4697-044d-4a71-8332-ab378ebd478c.json and https://artists.proofprofile.net/proofs/artist/f74f4697-044d-4a71-8332-ab378ebd478c.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 0x797bdc3c124e802d2b7cf9dc39a55c22d0657a3f790d05fb0b3dfcbdee38f421. 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/IL5842238292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bf3776e4778c66c7cd60e56bc33c1e6fcdac2e7853d8e73531a2ad8188f398. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/IL5842238293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314b06d724cce4fb6f8cd10fec938bf46fcc1f64a3bae9120a830baae1949ff6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IL5842238294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bac23b93c99ac4fed0e8c32f5bd54e36261403459d520a444b1e2103ed81748. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:46:31Z), 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/IL5842238295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b43382e14e9b5218ca97209a727e8af637272679701d103272e8ab0f7c6da1e. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:30:48Z), 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/IL5842238299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc82104d0072074395f7a50e04694a11c3abd5f43ba1c3d6a94bb5e8a6347af6. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:50:52Z), 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/IL5842238300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c72272f58c24069c0191a48101aa09b123eb7e92ce6a79b115d594550d76513. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IL5842238301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d99c13ce7ed555fef7549f72fdcb50626ccfb17b3743d4aea911f9bd74b9eff. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:08:19Z), 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/IL5842238302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef36ee89605488878c8237d2096e9c19981cb661c657d6d572de0bcdcfdbf0a8. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:26:05Z), 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/IL5842238303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410032d7c46cd028f9c7c02c5c7162012b45b53de883c66e7d81d0375cfdec17. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IL5842238307.
אנד וון דה סקיי איז טי לי לי (Radio Virsion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c391ba35562fc427ee8cecb7d27fc241763e8aee1a8f747912d2896b9b138cf. 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/IL5842239318.