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 0xe53d7cd507b6b5df3d6963329a7307d0fada2475b33c1acfc3245f70d7c56a89. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60e3afc9-d88c-417e-8770-fceac051a261.json and https://artists.proofprofile.net/proofs/artist/60e3afc9-d88c-417e-8770-fceac051a261.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 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 0x07731b4c886916629c226e1d216d52ec80f096951ecbacfc2d2dad1bab90a7be. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/IL6192304332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4a1f6132de8fdca68a8c394008e90ef0a2437d9582204f250b112df166ae34. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/IL6192304341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45786e6e93814a0f827eccace8cd647f73f073491360b2a8268695e2fcef36eb. 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/IL6192400063.
בגיל 15 אבא קנה פסנתר (יוסי בבליקי במרכז עינב)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8710cb8388ab27f067da3576ba2a0b14f74fb5e1ef40ea996b78a84258f233e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL6190400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ffc37212d5b6ff9a111ec9e56fe8548d983ee16a9a07bb1af7ac1c77dcf8ba. 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/IL1001087142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9604fd4fc484a3c62f7e905a89ee5faed3509bbbf9943d28c6784d2e82d03b48. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/IL1001087144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6d0f95856d5c5ebd24b41f111b709f8b7f17c866698e23f6622dc79f3b5d07. 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/IL1001087147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2cfe712c49f60bbb75f0a17b5e305259086ea81a557eeb846f5db2b1e3a779. 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/IL1412000529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbda51bf805083789ba045a5a5d0329c1aa248f2ec39ac6e4592e86c83acca8. 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/IL1412000530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf27f90caf7acb60618934af6c7d9d90736ef430016813b54b0b28ea876c722. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/IL1412000531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ad20a0d73ad3d9b27728114444ccb2e16eb213b445054f8822f565f2172e8e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/IL1412000532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6c857710eb54086d4223b2bcfdde6e3f715b840fc0c1325dd062d9f57972be. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/IL1412000533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5fec48157b8357d84bebea0f113e5ffdcf66f5df4a635650d2cef4a843fa23. 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/IL1412000613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d33fbd1272dc4fbc496f4cb7267a5cadcfd7d3b5b2aee1853d1507fab12125. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1412000614.