right|250px|thumb|A woodblock print depicting the wife of Onodera Junai, one of the forty-seven rōnin. She prepares herself to follow her husband into death. refers to the medieval Japanese act of v
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 0xd4aaf4cb453327a66157046f0553851e6b8a377f85f9764b6b34e5659952b677. 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/7a22fd4b-ec14-46ef-839d-03c8e34fdc97.json and https://artists.proofprofile.net/proofs/artist/7a22fd4b-ec14-46ef-839d-03c8e34fdc97.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 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 0xa6ab80554f77dd1302c2636accd1dfda4e23f03cf4c8f5e078ccbedf3d962898. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMHN2224600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a7dda7297c76d6dba4e859e6868ad953c5cd1f870a73ea3a1e601a0fb95222. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZTB72309130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abe2e20cb695c9a8e5c4a6ed5bca4de48999605f8d7e627f3a40f4d60d83e34. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZHN72330271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae122d59da54d3d3617258c9e6fc29f53d4cb6c53aed2c8a84c7a5bdea39098. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN82312231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c8402a177ad13921a175a7615c68304494960273cfb54843b681c2da43fdf5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN82389211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8295d3279ea78fb16ba28937388e3c374143f585c7283957a4e706dd5cd9af8b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZHNB2378747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c02f78123b6234c5122974bacdd8df96c5c91b9eefd928a36cd85c085c99c3. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZS642304837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64df8d41a49f3fa9bbd1b9ca5b97f1d667ed5a209f94c1898687b9e11ec273d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6L2336375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274d25215b2e0a7d1d41c9f40a51ccbeaf57e0035e04783d6a1b347aad67d8d5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZK6G2376912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b6217dc609eb43449f1997781764064315f6f855ae79fb52c95414f2246e3b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZK6F2341991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffad79c1b5d8e8885cc3c9bea2e0f112e83041f9111e33837102b8932f382eb. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZPLS2395745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15daaf1e98e4f6ab8877cd0cc2a1a932c17d9eb939180967eecad1c22a00c6c. 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/QZTAS2346692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3194580b5d20bd2d0cd9eebfc5a9035ec9078d0f0eb8c484bc9dd538c05c20. 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/QZTAU2311060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fd0df050aa241ffcb8498840c5fc086a497c5f996fdf9c66387f8676926bb4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZFZ72425523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7b229d4b6b3de57fc6f5cfde2a05a16c97832cfc9e94835b41fadbf2c2de33. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6M2472789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95992d6c1c7b22434044903024fa83daaf91ef3b6d5e634a4159999c40cc03d7. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZMEP2490778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335258abc20ffbde19422ca65471056de8ef0a4c92256f28731950373979ee13. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWU2458572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c94b61879340a0cbb943c5466228eb261b9d35baa32da4a47f399d138c8fcb5. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/QZNWY2457305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb394ddbf99974407e682ba52b8b27e4dfadf021b24b8590e44faf279029c4df7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAT2465892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9ceab3794cb521eff90b27a276fbaf32789c8296187a71cfbc8e828a99451c. 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/QZWFS2447654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351e76d4f8368cd13ebe12bb76b1748c0ac1ac768aee6ec45791cf0a2d7773c1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZ782402208.
mademoiselle? Final Promises don't break
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65747a831736eb66247278e187f10bbebdc0a8706b8cb79ff10a508c1d79e64. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZZ7T2487336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dee9850fb67402c079f1c78416b6d644ae67e1da5abb4db73c73cd12d3bc08d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QT3EZ2466924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76568cbd3bff533be7f3960c744857b9cf3045fd5101ba4255ee3c37a17f589c. 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/QZFZ62526662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598fd21895325599f0469e52f9ab3e41a22e5b3effeda4f03f5494885f7ddcb0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA42576678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d949b54b74664775eb36a0f6ba9a6612bf7af48b837237e56744ee60792f48c. 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/QZTBB2578912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0fcce0fd196648a95aa8e5b3a1f039f96580c0f529bb9bb27e18818c616feb. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZWFG2538448.
isadora, my delirium .. Falling for Me??
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200c9477fcb9465bedaacb92a7ae4cf68bffe0c3a08631a6d8b7107713dfb11a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QT3EY2559378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380fff5f5668de8540558bea900c5dd45f9c57602b1acb73ca2e89d40e961a34. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZZ7M2494522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeebd5916dc9c8889072b93b650eb91a3c0db06821dae93295ec7a107c078585. 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/USLD91769326.