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 0xa5e3f47d3277acf36764663b935c32237979bfeec9bbb48fa57ebef30558c031. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7dd8ec57-328d-4bdb-a614-a441195629d2.json and https://artists.proofprofile.net/proofs/artist/7dd8ec57-328d-4bdb-a614-a441195629d2.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 0xe755371fdd03eb5fe869602ab755c97074e53abb17423094de1585f29c33f050. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL4070900795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a21be0711da8f4feea4cc5e253f31738da4d2e57e7d3fc8ca774d1cc400fb47. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IL4070900798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8813b13857cd00da6a133fec443f03523ae9cc33418e6d8207972835f4b6a8f. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/IL4070900791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97105ff26c99ba1be047d9a041b27796e8352e7fbe30ee015e5261c7d2625966. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:18:13Z), 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/IL6191900390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadce5f1e09e2a8e3aeee707f3323f7c28158e6a5d32e4ac13ab8f2e5a5f17d2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IL6191900391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cdc87d4af381dabab556f3a7947daa9fa5007b38b99242e99b3159b7d95911. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IL6191900392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97ba860209fd9fa9ff407ee9b687013cca7329ee97fdf110a3cb20bb31c12a8. 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/IL6191900394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a14bdf62aab1498685abb7e5b2d2312dd835114ad99de2921b82e284163a360. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/IL6191900395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8bbe5f609edbd2acac322cd67f0236a0e3cc670008984f417b7c861fade56b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/IL6192001581.
לילה של כוכבים - שירי ילדים מאת שלום חנוך
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e51c6f064126a46932b8337b0bebdb3da9bf986e33ddbe9fa0de417a308a9db. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IL3601205090.