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 0x64481a277c0c4458130c448cae9725214f062d1ac8c3f76b1fc14830484255fd. 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/83b62c7f-a649-475f-97ca-b9d6f618630e.json and https://artists.proofprofile.net/proofs/artist/83b62c7f-a649-475f-97ca-b9d6f618630e.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 0x4ccd116caf4c11d3cdc63db2225a5e19f20a37562fd7f53d9b4be05f68bca05f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCAIB2467791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45db8299fec5d6d1c90fb88a4358745d26ebd2ebabbbd55117e1a3c1d4e2f906. 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/TCAIB2467792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71744652240bb812d92618c277859da488ac44daec9490061f4fd03d7d90dff2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:41Z), 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/TCAIB2467803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0439cfca18ba84231c46a2f65f2085db788bb81f3b1186c57a607610747e3c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIB2467812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a54570c0064a2f634ecea6785a2e0f21af1444a6ee38a0e3a6c74181f86a8f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:20:42Z), 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/TCAIB2467817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a97210d3639424a4e3e81a2130ccc2e22b05920a49a572cf57a397384fef89f. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAIB2467821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca2caa37d15673ebe234c2eac6b61a1a72b3333108cb9878f5999833318aad2. 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/TCAIB2467836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44df49a67f6ef346eaaa17c423cb96218d85474a127293a0aa7c32d7fe925b5. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAIB2467884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eddd0b60fc381623ff20f3b08d8119da1f04af48d4b900f5e792da085ed5c60. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAIB2494479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d34d8380dc9b2f70468cd371abd1bf8414ccb1cad3207e5d8cafd38f0deea0b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAIB2494481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89212d555d6469f59ff4dc92a7d98e33be7d69f75c6725a349f99ab612aab20. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAIB2494488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd088d0f9fd7da061e8fae76abb036dea4886e270ed48da3a93728537a6ceaa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAIB2494498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cd83c7042c1dcf45c573d5840f16b48eeb0ccf25bc27e3905379e983c6e59d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAIB2494506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2ff1538e488ba25c4379cfd0dc8d545904b424fd1a0ca2defe209d6a9dd4fb. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:28:50Z), 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/TCAIB2494531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b21c2f7e88b62e2211d8d894f9406f5ff6b3a03acfb7aa766964451dda08f0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIB2494538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6980031460e88f94106bffca09cc54860f2f233c01ab034b1059de2f8729215c. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:02:29Z), 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/TCAIB2494548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0567c9ad9e661a80030a8cfb210e1203ea92df31c43230e6f2cd72f889abbd1d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAIB2494574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9ba3e609746890c01c27d4e20a67c14e25e4cf37ef842e90dc205cb636da8d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:55:02Z), 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/TCAIB2494579.