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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fa544146728302a95392daf5ba1ebb79dc852bc3847045e1924c56e75ae1e8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b551b383-0a72-4009-bccb-ba04a1ef8523.json and https://artists.proofprofile.net/proofs/artist/b551b383-0a72-4009-bccb-ba04a1ef8523.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f37425724c2cdd539d2ef9c522e0f501cab8c9e1d3cb47306d471d73f0f0a17. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZDA62146635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f1440094c8028ce679144885fad427619ad731f584369b6d635a3f9d97c324. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWS2135745.
מחרוזת מחרוזת שירי פורים וניגוני חבד - Purim Songs
נעימות שירי וניגוני פסח - Passover Melodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a3c5a6649815198da5746522336fa88d57a0b0cfa058c3229e228fd2070015. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZK6J2246592.
ניגון לר׳ מיכל׳ע מזלוטשוב - פסנתר - ניגון לר׳ מיכל׳ע מזלוטשוב Nigun Of Rabbi Michel Of zlotshov
ניגוני חב׳׳ד להרפיה עם קולות מים זורמים ומרגיעים -Relaxing Chabad music
ניגוני חב''ד ונעימות לערב שבת 2 - Chabad Melodies For Shabbos
ניגוני הרבי לתינוקות - Rebbe Nigunim For Babies
הנרות הללו - חב׳׳ד (פסנתר) - Haneiros Halolu - Chabad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb79969e4838b5eb65982934edc1d3b80439a619a26f47268a77f2fe128769a6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:39:55Z), 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/QZTB82222781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d879ede9b62da388f3348e552ddcf7c8fe8c8265d19a529b7b7158d937e8295. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:18Z), 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/QZHN52382384.
ניגון הבעל שם טוב לתינוקות - Nigun Abaal Shem Tov for Babies
אחינו כל בית ישראל - acheinu kol beit yisrael
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d39d11d176c8f386a4ad7c1cf0720a0646df2c79b75fc223519740559d65136. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:32Z), 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/QZTBA2384925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdfa7728b1a99a53cabfa417beca7d296d6ccb221efe186246ce4e7285e580a. 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/QZK6M2444751.
אנעים זמירות - Anim Zemirot (Instrumental)