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 0x06dcd3357b11b32b47ef7e9d8ff011f244d68ef79e1a279b002e3fd38673bd59. 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/c0a164d9-199f-49cd-b8de-ea8e253587aa.json and https://artists.proofprofile.net/proofs/artist/c0a164d9-199f-49cd-b8de-ea8e253587aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
フェイクワールドワンダーランド
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 0x97fe78b27a3ac99e464809bd309b60c8b4b7fcee4d0dd453a7418cd0c2326ff7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPPO01503859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0291d9421dab2d3465f026ff6c188f98f33fbfb7893cf94f7e9eaf88d640aced. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T17:01:30Z), 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/JPPO01616136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5ef488f6b2c72d8841aba19d9e8b6b0da73cca3e73b57cdaa750faf2f4ec12. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPPO01620874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80a9370330fe3323eae29831759abc2ff2ea773a091c7f11f57e1ad20f905fc. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPPO01619032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0291d9421dab2d3465f026ff6c188f98f33fbfb7893cf94f7e9eaf88d640aced. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/JPPO01616136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a568994c3d1a23ad23932d9fbc8e9c7a2c007eb1210ed6a262372638ef7a575. 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/JPPO01618014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed154d5f4c12de62b78356c217a58eebb8b46720f4c4b33a7fd5d4e5f19ab287. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPB451403370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce6b38b18f467e0124c27272fb89f99eeb6e05d4d8cdff70c33b8b4ff0eb25b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPB451202868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae38183b0cb498499c0804fcd6c7086c2d237ac95f89cfc9c284b8ca55d4f71. 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/JPB451202867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10632854ed1bf1b3370b0d6c0dce34a402efe190592f52dffe51cafb8a7b0f3d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPB451202871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3298f1a112d17db9f61c8cc29b7b62f63e3ce1966b7484fd24dbf7fad4fb381c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:28:45Z), 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/JPPO01803524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab97068d03bd893d3cb8a314f0d148465d77cf08135d7c4e096a777106d7adc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPPO01803518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab97068d03bd893d3cb8a314f0d148465d77cf08135d7c4e096a777106d7adc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPPO01803518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf271e973fb3b9c49dc469cace13a28d87c5d2e9611dc9b02ecc6774819ad71fc. 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/JPPO01509965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab97068d03bd893d3cb8a314f0d148465d77cf08135d7c4e096a777106d7adc. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/JPPO01803518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2515091b09a5bf27ec8c2a2167c45562563ba349e685fceb4b3c77262a94f18e. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/JPPO01620872.
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 0x6c3f685391cb852d2a094451fabd5ee0d7a012ae103af97562c66faa6abbf9c4. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/JPPO01803516.