Ichi, the number one in Japanese numerals Ichi (film), a 2008 Japanese film Ichi (scarification), a type of facial scarring traditionally used by the Igbo people of West Africa Ichi, Iran, a village i
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 0xd810ca8c7271a42c1b3cd969787ac4dd4332aee47862692699486ac2f2097894. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebc23efb-c645-425c-bbab-4bcf9bb20932.json and https://artists.proofprofile.net/proofs/artist/ebc23efb-c645-425c-bbab-4bcf9bb20932.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 0x602bf93051ea71165c0a6654ea5a8a6f1dc4e47e37454f44aaa54b93cad741f6. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:49:33Z), 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/JPW462445488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa120b293556e7c45f844e8488d97eb57e880199b2a351036e8696bad2cc56792. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/JPW462445489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffc4d5fb7113134a3fbe351ab31f12bb36e08142feddaff19ddc34ee70201ea. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPW462445490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225a761f16726b5823139ff9a0af9d23005ac8428bafa755887e2b55043a38f7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:02:22Z), 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/JPW462445491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d398f5d3d7e7d38af69aa5443c80064ea6bc3704a85d41322dce4d45e1c1434. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPW462445492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f4f7dbb5e8e274af26ba47bfaf37a175a58c9de3a2fc8e541e00200ae561a4. 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/JPW462450197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf595098d3c0ecd4ba79d045504cf5bc26eef07ab915ae595b63e486795cd152. 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/JPW462450198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0b05f7220a6c867a6b86e04dedf6a93d80667eaacaecace223c077639e5815. 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/JPW462450199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987406df998b13d3114aec73f68e5a33ee68acdd92260501dcfa59ff1594be1c. 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/JPW462450200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b1bf4782c575e3f492b89a7248cdef5f1272a97aac57f2545f58b92ba3136a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPW462450201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778d9a2f73c5235a1e1fb4839739e08598c1fd2cddc179634d77d5957c155f91. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPW462452056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfacfffa186429cbb9f4b836fd5e42fde0df07d352fa4370a9c515ee83d3ea95. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/JPW462452057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a555869a1cebdbf345f1f852848ceb0bb9c25523d0323662de1a294eb0ef57d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:28:18Z), 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/JPW462452058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e44b996278a22c557bd257d15102212668207a8683f3343fe5a7930ca76fd79. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/JPW462452059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d826965034780deca968679511ed31a687156967a7e51761b556c57e3749a89. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/JPW462452060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ba19f956d96466766d199341111c858b7dd25673fc4ccedb03dfea01576692. 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/JPW462505811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fa0eafdee1758022cfc4e763b5bc9db09b3023acd277ae609acd3f71765aec. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T13:03:00Z), 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/JPW462505812.