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 0xc32e8a84bfdf579e1cd4b188facc0a722ebe139b0c57091ebc18d0219f0f9992. 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/3348b8a4-5a7b-4368-98d2-fd4cc1744d48.json and https://artists.proofprofile.net/proofs/artist/3348b8a4-5a7b-4368-98d2-fd4cc1744d48.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 0x7ca085a0607af77609159a4e7a5f703ae1660ad3ca500185f0faadffd20fa2f9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:04:33Z), 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/FR2X41448341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dbc660758daf42753cae707b054fe2ea01029da19ea37673e9118a67275347. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR2X41448347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64faab8bb7c0d22e01bdf23dfd9f3651d1858586d73d9ac9e517481abef5c024. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/FR2X41448349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9608791f069f0a166f431d61930a71f10e18263453ec97206928a767c8d52b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR2X41448350.
Allah U Allah / Resul Ü Mücteba / Tevhid Etsin / Aşkın İle - Potpori
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6f5df9852fabfa489c39493324a7ac182defb33c6e988dca271a132d56aa91. 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/FR2X41448351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03afda414a09c229f22aac1a23f74b2f97cb279f105f5167ea68b949cc1f200f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR2X41448365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd87eb3badafe365183de6d3c38b999855c0dfee09441795254a6a16c9f36dce. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR2X41448366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed8ce1c6318309e7761e18aa13b3fb0adf65b36b144840651f56f76dea7d3f1. 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/FR2X41448367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca20b3c72534a1f5faa5b7a07a6efa92a7d93195336f408ab57853b90e077eb4. 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/FR2X41448368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9dc48c3a8faa1c20fbfcaf1b1e22b4e02276e82b97e484a41ee2d5150ff62c. 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/FR2X41448377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4caae95e083d921b59d4489c292145926d6643c19c7eee5ce8a1ee8fc3e3df18. 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/TR1780700384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3d5e3e14f5664ad4c33647849cef324d50bbfe36b8491b1516abc963d4eed9. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/TR1780700386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6de4b95d05f0d0ef96aa4b7a75428a70e5d786e395fb58bb889a43595c72ead. 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/TR1780700387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cbeac78c4ddc46073d7dbbe03bb650ccb014770a5ef4321282c8e987fe737b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TR1780700388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea03a588985ebbdfc4b3daad1c0ac2102f4aba711946abfb8c1f4697904ff6d. 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/TR1780700393.