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 0xd24c14efa7f04393d34ec0f4fade866439b13dba594a516b27bb67461ccb459d. 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/cd66afff-3a00-4a73-9755-8c52fda218be.json and https://artists.proofprofile.net/proofs/artist/cd66afff-3a00-4a73-9755-8c52fda218be.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 0xbc2a41deee71a8af5c37de85b271b36a4f9e8110281ee65e1354b3785581a9bb. 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/ITB841900817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc21534eb136760b97eb4dbb854efe0c61b0464f6e79a9f2aa479f5520cadf9b. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:41:36Z), 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/QM6N22234874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abffdb75872251fef6828a2e68b36ad66f81dc82e4ead67e6209d4262e5c187. 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/GBJX32266911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0da74d2e81c9f963099346a7c385c90f1ae3c737b549719226f113d357ab37e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBJX32366851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc60bb1e816d0eb9d4277a8340f0edb8c1bebbcb26365e5f59c39110c3e6947. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBJX32366852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3104c9d643fc999e21986cf1eaf129fd69d0daeaf1a19ceedd2a598750f38d3a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM8DG2370668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8a32deca75be77c5e78426d4d0f6581f00120507b6e24167c2e2badb8a10f3. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:35:00Z), 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/QM8DG2370692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f59e79069abfce6317051216fca287cc466d0ae4b07c314f872d300638efeea. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM8DG2370660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea06f02c56a0d4cccbb900490e48f16df4b0cbe57988c9872f2c7dabd20a93f. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QM8DG2370673.
Rebirth (Blackworks Weekend Festival 2025 Official Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917559c3d5fd48ff1437d04159f290016f29936836cb216f0b817099f185bded. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/FRX452537491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2906b0ccef30a36608aefae01c98422e098d1d576b79398c0461a27a5905412. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/FRX452537492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ac5008ce57071e1f38c98074f020a78c8189c658b042746de3dc0382369eee. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX452537493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ee62bdde05c1d5f645a7163291711144c5cd6d98d9a23a4aa8da5add454ceb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLCK42408324.
WIJ ZIJN TEGENDRAADS - TEGENDRAADS Indoor 2024 Anthem
WIJ ZIJN TEGENDRAADS (TEGENDRAADS Indoor 2024 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339434ea671bf9822ed74413fc9bda861460c6f443b781b01017668bf67f336a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BEB682400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f135cd20149914f11056ac25f1bdfb514928a4b04850bc2e49a3419ca3e7e0d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BEN582400474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b3b4df8d25e409f2fb1aeb46bbd2779c734cf9a2b411565cc5e46649b02622. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FXR752403487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a0dc2d063a6d46755b77d68e14a64b4177145f3c37f1d4fb5e8bb063d61d90. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBJX32166004.