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 0x4fef414fcb78507d61e0baf8d42ef0c5397ae9c406942e27d87613ee28583bed. 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/64470ea0-c696-4cd3-855c-36ee408bbd74.json and https://artists.proofprofile.net/proofs/artist/64470ea0-c696-4cd3-855c-36ee408bbd74.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 0x4b5d59b7c634c2743556980ad7f631820087eb054e6858621bc0e53df3a65def. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TR0331711133.
Horon Potpori: Torul Hartoması / Evleri Hane Hane / Uyun Horona / Yayladan Gelen Varmi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea2116fa7e08e596bc2681c1705a6f2bcc458ea47a80d1617a95630ced2f0ee. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/USL4R1936428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0fa4bafe18ba7ebe6e2f7f7eca78d4aa5043fc6d907d95f466a9e280f04959. 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/USCGJ2115121.
Leğose / Eşoniğa / Ey Gidi Yalan Dünya / E Patesa Tin Katan - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2ff89aa8e75c287c7348bf2e1ca443cadedaee731640f9042f878b5a2c9a0f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USCGJ2115123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40ed0001976ad6260a4e622833522a4048f7d11621187d468331fab2ec5812d. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USCGJ2115124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c597ae571f06d8291f36097a32baddcd4c8a25de82dc1ac820a7a5b829f578. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USCGJ2115125.
Hasan Geliyor / Yados To Rakin / Su Urano To Ipsilo / Tepeler - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a1a3b4e5d75c243a188889460170cd83d11233698570f910b0b7652418c6ff. 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/USCGJ2115128.
Nto Naftağo Tin Paran / Hui Hui / Trabzondur Yolumuz - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a26176548f37774904e146d8951d0592bef3d0338339e9396ecd3de5750a79. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:30:30Z), 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/USCGJ2115129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b150b604edee649fcc98b24a2c7527c1d6ff86f7c394a4721bde02f0a685c32. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/USCGJ2115136.
Sin Cepim Leftokaria (Σην τσέπη μ' λεφτοκάρυα)
Gia Doste Men Enan Rakin, για δώστε μεν έναν ρακιν
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6d994a3f9369f9bd5a2098a2048ef453f80905d40f170415ef4e07c367d0ba. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZHN92555707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aa33dcff89462beb22d9d0e74c8b550f13562ed4197ee2256d55c638ca9eb0. 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/TR0331309336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d8b485678c8c25c23e7458fa0b06e48742eaefc128d3f165ed80ba6dd399ee. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TR0331401122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd771ccad6cbc4e2692f192fb7d048560f0105609638b63c6d3b3dcaca20f4d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TR0331401150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf246b066e96184225f66c73605c03d797dbf30c5583d98b5061e1ef17330b827. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR0331610817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebf938f8144ba689b8c4142d48d9baa024ce5554f51b18dc4be9bead6aa4c8b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TR0331610766.