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 0xbbf54fb1fae6f38401580a698898ec9acedeb11547566376488eb3933e053f8a. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1323558c-962d-43e2-9cd1-91a0dd956d28.json and https://artists.proofprofile.net/proofs/artist/1323558c-962d-43e2-9cd1-91a0dd956d28.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 0x7f294ec8e654017b748fa89fd9b64f4cc88f6c3e1bbd66b0d22dc821a9a05cca. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBKQU2449769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3557a638db7ba68088ef152eec7606d1954971486299a4ad6dddf8533e52ba1b. 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/GBKQU2449770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6712f27750c3cc03259e76663895573d9fdd45fab2d9e5430098846bb6e133d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKQU2458047.
This Is Special (NP Project (RU) & Ertan Koculu Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7031223c599189c35db38f6a39fe1d0faef695c8d46547a41aaec55754c0eb. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/US83Z2417557.
Askin Olayim ( Melodic House and Techno )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f4e5fb05893879e40df941829a0703172d464c96e5fd035a17f6c38a9ebcb2. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/US83Z2422191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3105519937d90a33fa613608d8c212deb173628f612555db64350f5e4fc72abb. 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/US83Z2506212.
I Will Always Love You ( Afro House Version )
I Will Always Love You ( Indie Dance Version )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8179edc16b3ddfe5433ca50f5c233c4c076844dbce89608ad828a62caf80e736. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/US83Z2521442.
Adanmis Hayatlarin Umudu Sanli Galatasaray
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2946a10cb5723e6eed1ce5a06bd3056461b3dd07ee9126743bc49598bd2aa340. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US83Z2535875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0414a153c5418eeaa6dc9675816a8bcafb02b9fe7f93bdbe8c375167476746c0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US83Z2549228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67d614ea179ac667a9526759538f0c4bc5b8bacc81ede63972c8562cd1e2e60. 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/US83Z2431254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f294ec8e654017b748fa89fd9b64f4cc88f6c3e1bbd66b0d22dc821a9a05cca. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/GBKQU2449769.