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 0x7f0eb72c828f0133f70f58a3560057808f02a3936c8c98b9ad6e54f2ac8555a4. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f22588ca-1803-4f32-b3c3-5b1ffa30dff9.json and https://artists.proofprofile.net/proofs/artist/f22588ca-1803-4f32-b3c3-5b1ffa30dff9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Zlatne Žice Slavonije,Požega '98,Tambura
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 0x8a2c74b0a1c3b395eb4651103d05b2574270351b6d0e3d1a591ae24554fc8227. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HRA040636854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9dd3c2bdba7abb73076fa477f8a9221eac4bd66f913d62f2be5bd864f27779. 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/HRA048878751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb322c11f19e138e1ed8df0a7c937c3ed585c72ebe548d8123f897e45ac78e1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HRA040142004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0254f594db6305b443c6b9b80f24a7418c7e30534bf2468db1d854f0703c963f. 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/HRA040633955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315046fa4dc2a87d0e3094fd776a6e2affe520f889c80d73d3bd43b564bbdd68. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HRA040445181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fef97333e1ffb55ea1fd44ae40bcd57dd2b7afec574e18ef41454a089e4249. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HRA046826343.
Pitomača '97 - Pjesme Podravine I Podravlja