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 0xc8ca6e7f28f9fde81b01fab05696eee564952847d01c565dc8b8f8d97a7a622f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb6c9730-cd0d-4a2b-a4d4-cd7789291586.json and https://artists.proofprofile.net/proofs/artist/eb6c9730-cd0d-4a2b-a4d4-cd7789291586.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
あの・・こっからが楽しんですケド。 コンプリートパック
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 0x0b58fda2d164450cbcaf6efe6f4cd4d74dd75e249d0ecb56a5729b6b78cd61e2. 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/JPU901601044.
Take me out to the ball game 〜あの・・一緒に観に行きたいっス。お願いします！〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21238fb5a6a6796c0352ac15f93db7cf15de090e77cdc8875d510470a8dcf7a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPU901500747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eee5e18a62c19c8af5c8d764ae99b7defe7ddb7a79e382e1cf74c40f33e399. 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/JPU901601045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd04784a85e24d710f459a61802d1c16924e3a2818948a0403444b26fca61981. 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/JPU901401642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613c440c18187ee8b7f946cb330bee99d7f908d04b0d3aae04b757d0ea92d07c. 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/JPU901601048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5160d4629533046dcd8fbd8f29a6066003045038a21f873a65ea7f7d75a2caa. 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/JPU901601055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b2b53d1eeea518590f898b22e6aba0de952a4776d50a87f098481d1c722408. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPU901501582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1de1fde69d58b6ccecc7b49b15782137859a973eafaa362cba2fa62c550982d. 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/JPU901601053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed16874f4a5b6b251e488d34108d5f2dba02ea5aa2e8794d923d4f669ac31d4. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPU901601046.
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 0x5d09e29bec9b82e63df8e74a9e560e7096d5c4b7a3ef1200636325f96bd55c5e. 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/JPU901601047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f621bc76bf0fe32565ff4c24c43269fa112db5d3ef4eb64438aa0a8a780934. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/JPU901601049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0afbc069cded38f7ef4d1eb9d40d7d9c944353a41af3391ee4f0eca38a20dd. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPU901601050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb664c06489e0dee1757e27884451b63b3fe31af21ce55a0dbe3111ac8dadd835. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/JPU901601051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270b76b3a600eae513cd871fa2b99dce2b9bbcb96ec5489454272d3f4ddedcc0. 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/JPU901601054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082867285b0b9ac7e583d3dfdb2bbff8582c2c394c55598fae2016a8086cfdf8. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/JPU901601052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1270432473f18bbbd106c4065c327251fad35fb6122ce3a74ca6c5adb352da. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPU901400353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78eb373d22c09cca56bac2448eb8e8ada5ab4c00ea692fda2a08d63ba83b999. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/JPU901501580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1e968cc1222ac66508325f8f37dfeeea6c0fa29a377edb4c4cf0b4a5dadd02. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPU901601056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3862343a070fb8295f936967b2ce951ededd0b4861f33a1bd4201b36bc33cea. 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/JPPO01401606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa707013195f14203a7c1a9a969a7a62e8d4ee67dc20a04e6e5d1a4ac94fc3285. 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/JPSR00903685.