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 0xff9b231422261f898cd43d0ec5f95b0d25fe4749cd92b8afa4647ffa1f76b44c. 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/aeaeb151-88ae-4ff4-b09c-ebe376b7043c.json and https://artists.proofprofile.net/proofs/artist/aeaeb151-88ae-4ff4-b09c-ebe376b7043c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x28ce09118bfccc30fc8fe714289709366abe76b9a4ddb5c9c1a8cf0069f50114. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2057745 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725025c5c39e813a7e97864c16b6190ebbbc47f984419fa07cc3403982b3393b. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2057748 — a six-check JSON result.
5 Little Speckled Frogs in Farsi (5 Ta Ghoorbagheye Teez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e7d45b2abd7ac63cf016534f44472eb321b9a595b12d0e8e0204245149776d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2057749 — a six-check JSON result.
Itsy Bitsy Spider in Farsi (Ankaboot Kochooloo )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f33924136cadef81f884fb3e5ca40242dfebf651044f8fa01d4c065176d8f8. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2057750 — a six-check JSON result.
Wheels on the Bus in Farsi (Charkhaye Otooboos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bdf9d2d8d4d65b6c9ea2d31691108bac3fcb1c8331ad7fa63c09fa76931441. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2057751 — a six-check JSON result.
Baa Baa Black Sheep in Farsi (Babaie Siah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e6ba8d4df91f1bc4a0679f7afe53b5d9e2413c06ef103e4fd18e4d506e5752. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2057752 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e7f41e6f21d2d4b15b536e5d9c9b1a380791af4c05987fb3a1c0bc2fdeac7c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2057753 — a six-check JSON result.
5 Little Ducks in Farsi (5 Ta Ordak Koochooloo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed70377ec3dfdd5b2466fa31a8b1aa68e01e6e97e973474c0a4d35b78e00faff. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2057754 — a six-check JSON result.
Rudolph the Red Nosed Reindeer in Farsi (Christmas Persian Kids Songs)
The Animals Went In Two By Two in Farsi (Keshti Heyvanat Persian Kids Songs)
Old MacDonald Had a Farm in Farsi (Piremard Maz'rae Dasht Persian Kids Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d394bbca7b547843345bb81c79489b290f8bd32cda9db62cbcb2ba642bedd0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2138040 — a six-check JSON result.
Colors Song in Farsi (Rang'ha Persian Kids Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d5b22e21ad5cf25f2ec2d63f99a5c4e8a536ef1c37259516a1e8aca7271730. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2138041 — a six-check JSON result.
Numbers Song in Farsi (A'adaad Persian Kids Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afdeaf9fae4260c57bf120a2fecc81f7f3263687f23b5d8f8f4674dc61fec27. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2138042 — a six-check JSON result.
Down By the Bay in Farsi (Kenare Darya Persian Kids Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2141d4987d07eb8c582741e26305e345eee90f58ce15ef65498e22962b40f1c4. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2138043 — a six-check JSON result.
Yalda Night (Shabe Yalda Persian Kids Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708169ed38629749214199453b38fca2095352efa0024c2d8c290338aa63ec07. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2138047 — a six-check JSON result.
Row Your Boat Lullaby in Farsi, Baby Sleep Song, v1 (Ahang Khaab Koodak, Paw-roo Mizanim Persian Kids Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480ac68252da54c05a92b5b1da56e05e458c56f1f38cafb7448028f9ae403c42. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2485576 — a six-check JSON result.
Twinkle Twinkle Little Star Lullaby in Farsi, Baby Sleep Song, v1 (Ahang Khaab Koodak, Cheskmak Bezan Setareh Persian Kids Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7cacc010e764194381abc2db91fa627daad3b76b0b0078faa41daa678ddde2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2485578 — a six-check JSON result.