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 0x8a8abb442ee0346bbc4183ff4a8068a17e3a5729013c4ca4fb9e1fc99e841e1c. 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/bbfd5c6d-9123-4b73-aee6-af25a1f85f57.json and https://artists.proofprofile.net/proofs/artist/bbfd5c6d-9123-4b73-aee6-af25a1f85f57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
סיפורי ילדים - סודה של רינה, קופסת הצבעים
Chants et danses d'Israël (Mono Version)
Jewish Holidays Songs (Vol. 4) Festival of Weeks, Summer, Winter, Autumn and Shabbat
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 0x7630f4c189dffaa2a6b02e8096df96c12cf6fddffe12c3f4266ea661f9b5b1cb. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/IL1056300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd02c5655dadf7c1573e1e178a5fc83a8ecbea28acbe8785ef6415276ff28db. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/IL1056900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431b9e92437ba13f82c43d293e50dc7ac28235da41ce5246b7338ed832c789ba. 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/IL1057100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10603aa36f0bf202e5701d5869d83dc3bd9162432f786bcfee4de5c099b18542. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IL1039602832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe33571d526f94d19e1488a76c8d9a8059926dd00bcd2125ef76885696afff3e. 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/IL1039602840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eab565fb9a4d641d77e9806773b148b4ac70be38dffadb1ea0a244864a239b9. 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/IL1039602830.
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 0x1a21a0308940cac744f7ee41848e68f4b01993aec99463bc4bd13c09e7abf6b9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/IL1039602835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55e632e2dcfbcd25a2ac9d628e902e33cd14b9cd85b20c49e66877253d9fa69. 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/IL1039602841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2632f5f780c3c9efe14cb064ca82633f39ee08e50c3522d359cf2ace091bdd. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/IL1056500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18924c27710e86c0cf2bede96e3f3314028fbd91b77adb13016055b28d16f221. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/IL1059000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45159cec085f704dd65f5820566ca6ec0abeed24a619bd77e4d1fd3d23c60bc4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/IL1059000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846a6297c7966682849df260c4f14b6b468ebe92d02c7200782c344ee1c227d6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IL1059000042.
Jewish Holidays Songs, Vol. 1 (Rosh Hashana, Sukkot, Hanukah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa497e2a9618c2b28c190289c397d58796101c66b9abc6c703e451ab627603a97. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/IL1058800076.
Jewish Holiday Songs Vol. 3 - Passover, Independence Day, Lag Ba'Omer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7ddb3569e7026d2b749d17a8884193b3e51ad8d8668ed9016612b567b62f0d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL1010102309.