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 0x5ea637d2a5dbe9e3dab2f086a6c251ac445100973ce9126301130d0625d439b6. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41b2ff26-52df-422d-80e7-881bfaab9b96.json and https://artists.proofprofile.net/proofs/artist/41b2ff26-52df-422d-80e7-881bfaab9b96.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
みねろじおかげさまBEST ~ おかわり!!
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 0xc9ac3eb2806a3fffce517e5989a7809a208898293d6136aa8802b5bad014a61c. 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/JPW561905215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867e99dd4192c91e2bd14ff7ad9ffdf60e100ae44daa70b84ffba17cb5df599c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPW561905217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86afdbbf7e2ef019aa8591fcc08ed6f8f97673115530188497f8f188249b3f3. 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/JPW561905222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2366e99cd8c0d7620764f2d89b437a3c4ac5ff4d0a27a9673078e52c739de60d. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPW561905200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad453d8ab9b553e89d783987e13febb4da9e86e808fdabdd315feab3e67f986. 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/JPW561905201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b36a377de520b25a3a99efc68331e49b52f5db3c16900dcd2ec772ba4fd4cbb. 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/JPW561905208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80066bbbeee3afc9088114afc54706c8f1ddbf6e330a728dd9537f7d741bcf0a. 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/JPW561905212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fba593906acb80f80bccb77d9be3f27f41eae2cc12fe039ee4ec921e269bd5c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JPW561905213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0127a4c547d34e072ada5f642349e60815cbfbcc9a09fc5399789b1c504b55d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPW561905214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d879fa1f1bffaf4538cc4f49ca13cabe5ef2d4e4cbd90d9bed9ee1c2d0e382b. 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/JPW561905190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e942dc4783bb8b0b9f79a685506f5532fdb6e47fed4cdc2cfb50c3f8228d37. 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/JPW561905192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dc9260d6f4ab8102eaf1e228c2003c6627324fdd0790a88f7c6686672d1f38. 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/JPW561905193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa505174caac821485d3a926bea336b8781c4f7e3b5d1beb5466ed1217d264b0a. 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/JPW561905194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8681b178691cc8179825ec4600d100da78fd73a34025a27c03dddc8990ae307. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/JPW561905175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4ac366bbdf06aff274ff7d08a0e97459e9274bd8e1a3fc95fca99ad8fc76a0. 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/JPW561905176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487de0a1ab04b4828fd5d6b6d7d08d197383a108819c7177c2cf1b94dd0d42a4. 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/JPW561905178.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb28cc4354e4d83c7c010730f6aa4434c983daa6604cb719813d0536dda6a43. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPW561905158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69aba64f992f1a2e327c78827d717c00a2fbc0fbe207890c2cdab5e7b8674880. 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/JPW561905163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d23252f9b33e6c4d7fde3523c9abb6041fc3d4feb53dfa8d5fb185945426b48. 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/JPW561905165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc680c7cf316915689f2cf211c02c8b1222d97261c5976c52cf03c5864229698. 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/JPW561905166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f03d92ced655ea4ba80f3c83803148db1a0668420b39405dc007ab6b5ce736b. 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/JPW561905167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075d0e156b19d742fcadb03634aa7d96e06abdecf21a87f1fd9802acb2cfe344. 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/JPW561905184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b066419033d7dab444f7e5872091af57a9fd8bf91a5b279ee1ba3c9fb839753. 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/JPW561905185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d274b81d3984c752a865839cf6cd996388d9cdcfdf4c993fcef0a109aabf88a. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPW561905186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e797eda9a850183e2ab320606464c24163192705033a0a480c904151210932. 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/JPW561905187.