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 0x09c1338cadf9e8e405f0ed5012929615597180d8f194957dbed6c9d1c1a1949e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4276502-ca3e-4bd7-a128-cd62fc6eabc7.json and https://artists.proofprofile.net/proofs/artist/a4276502-ca3e-4bd7-a128-cd62fc6eabc7.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 0x7a3f582430637cf25ed86e152663a2b30a13f4ec4acd65bd8d80297b195b3fdd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAFX2123113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fe8a99c7ae46a13d1019431105b2a89b6fa033fc95f51f8293448cb4930b58. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SKBY22200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fde8641172d12f2248a470e4fe9f67e04d863a378f88372703ae5eaf29ba042. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SKBY22200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f509f70e94c23e69d2b63ea491bcd5b4d38698e669099f80fe358566337e5fe. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/SKBY22200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca2d6a2929aec20e0125638888b92942a022d21b98105b20e4dd65032cddaf8. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/SKBY22200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268fcf136cce66a3ad0dfc423a38a8e5f11998e093ec1663b2743231bc176c52. 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/SKK402400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e8e18caa6c572601673548d460e3483888456e00390c1c1b931e84d350f3df. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/SKK402400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904faa73f9ba42061b5982f7b62d39d5864df4bfa402383182724034d075239b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/SKK402400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90466f59dfcafd191123d4fd5eec6996225133c31874dbd08b077c5b29e4ae6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SKK402400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4f67e23dfc25fa893b096105919aa416891cbcf30e2dea7c0f91cffa978e11. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SKK402400305.
Spontaneous - Zopakujem ti to raz - Acoustic
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24edfebef38391a368187a045bf79d10acd9fa3690e83ae5deba8d2f3dba8705. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SKK402400306.