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 0x5ded730d5e3f21b7552378883ec95bd9a895f6397da2fda0dd91900c70fca9be. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e826221d-8adf-4be5-9228-c6582d20f3fa.json and https://artists.proofprofile.net/proofs/artist/e826221d-8adf-4be5-9228-c6582d20f3fa.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 0x81b712207d6625e080d26912fb0a36630b6856defcc303a0af1841a6d8fb184b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IL7532212943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daab076920063df2a374366e74fa006cfaa4ad0f60a149857c802666da9807f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL7532212944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92177df5d1c8d5a33ee32345e83a9b3b7b0d734e0d9bfb72a1f6bec7494f9cb2. 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/IL7532212945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba07232ae0d078876934dfcb91040e265447f6dd437b22fd16836b45ae98ff0e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IL7532212946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b86ce9a3e736a1c3ef84678303cb04f22fd35b2f1ed3d5e6c51213675c44742. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL7532212949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a7026f232174c4d9b90413662c5db5747b980a6d2bf488082ca55a5a3a05b4. 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/IL7532212950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a70ced5edfef21e413b7afe9d3c942f1db85eb886ff7725b683dcac6b5998a6. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:21:47Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL7532212947.
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 0x7726ac513398b43b5a072798bfb6ce4129e02e5d2672fdd57628233ed9546665. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/IL7532212948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023e2c4f90c8443e7fb90f060a9aaa49e20277c99a8edbf693997de7ce5e575f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/IL7532212951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abd35fcfe3f6dd21a6d29afa8e4c584d5bc4f5f47f1132ed0349ce963d1eae1. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/IL7532212952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da23116a816424d5fe95c1dd3e0df0eea177d0b698b2504cdd76398e12ca361. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IL7112001032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da23116a816424d5fe95c1dd3e0df0eea177d0b698b2504cdd76398e12ca361. 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/IL7112001032.
מכונת הזמן (כאן 88 עם שירי ראשית המדינה בביצועים אלטרנטיביים חדשים)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6678f8bb733a058dcdc727ab2cb75bbe762242a885c3c49444cab715139a19. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IL6191800354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb921643a3596eb4c131a05cba256695e9373b278f7cdf82e931a2c587d7038d3. 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/IL4040101936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d965b825603b1b720d3d452caa4291e2c71858c75f26b1c4d82838309ed6182. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:41:34Z), 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/IL4040101935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d33903ccac89c3bbf36c63b52b71a215f354010cb0b1c51af07b101694163bf. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/IL4040101934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63112e0d455a2ada891b5c692ca7dbb8f411a7f9bea4482a1a06798ef77c92bd. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/IL4040101933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0bcc0dc52ebdef89c770e4068cfae351719ec1feed88d48657b27594085606. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/IL4040101937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a088787eb5e106bb9fb67f8432add64c055e1dc5a36ef904cfd0b1d135bfe4. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/IL4040101938.