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 0xaebd0d1356c4c69ea210e39a187c83f1549c88cbd50ac6c2c2bfa13906edfbbd. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fac2696e-b8fc-40f3-80a2-e1ce6a0d1531.json and https://artists.proofprofile.net/proofs/artist/fac2696e-b8fc-40f3-80a2-e1ce6a0d1531.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 0x526b90a91708c3c2edbe54c2ff53ae6d6e8ddccdce5306ed839f8a3ca5d34afc. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TRA160200232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78daa11940b242978be13c5648799b94827bb3af175bc87f41527daf0259362f. 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/TRA160200237.
Taş Plak Serisi, Vol. 5 (Türk Halk Müziği)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0a7ecdf1c20e84cf63c9bd67c1e8fc2554b3e0b6ca17e217def943df6eafc1. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/TRAJY1510349.
Taş Plak Serisi, Vol. 4 (Türk Halk Müziği)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8107487283f05b78f2f96fa38fb9327ecdf679252d589fd8a52ec29e3b1c959. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/TRAJY1511074.
Taş Plak Serisi Efsane Albümler, Vol. 10
Taş Plak Serisi, Vol. 2 (Türk Halk Müziği)
Taş Plak Serisi, Vol. 3 (Türk Halk Müziği)
Taş Plak Serisi, Vol. 1 (Türk Halk Müziği)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2322050c409e8cdb1b7487e1c285f7a9934fb7ac698c42c8a6f81103ecc4b734. 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/TRAJY1510495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e9b6bf6d26d06d5a28aa2b9d6a0205874aa3ec7eff8d386f87e997acd6de2d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TR0330603087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49861cacbfa695fe76d19a8d80772419d8e5873e8350f68636eacf4b1289e2be. 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/TR0330603098.
Türkische Schallplatten Projekt (1920 - 1945)
Turkische Schallplatten Projekt (1920 - 1945)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07def7f0cc2a9d6a9d306efde48fd3ed06d8fd4cfc8bce136dc43b0677f00d5c. 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/TRA162400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f0c1b4009971403f9f0889cc30058b0c0cb231b544a0963f8d815e45a210ca. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/TRA162400099.