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 0x7bcb902bdf379c8d2202f92d32a592c676c087e733e6b9d7e73870229ea8d34a. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c82d922-47fb-4af8-b28a-b1f98ba1af30.json and https://artists.proofprofile.net/proofs/artist/8c82d922-47fb-4af8-b28a-b1f98ba1af30.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 0x0c35738e94e2c02144049544b18b16fecee99f206b9dfd9384700100bfe381dd. 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/JPTO08800830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebac0c701c860bded28749d2666b34cda16b72130e123cfeb8350c3066ad023. 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/JPTO09078120.
私には貴男だけ - 日本語～韓国語～日本語
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75e00610e6c58257b6f87c8ee543608a6aa96c5392e75541a83a1d5730afa36. 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/JPTO08851120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e1f12d12646bd8ad90786cb78bd9d8ab6639c282b90f68fba393f4e09fd741. 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/JPTO08751220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3978eb8542a89e54ec984f12ce7139db765bf1e90b780d901dacfe34b3f11704. 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/JPTO08851090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e42a4df51749ee116680f83cd85c4d215889c89340a15bbb39e259b95d8cf8. 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/JPTO08960440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c95efaccfe875e6c5e20291d58daf2e0abbab8f3111f47d2bd1d32261c59612. 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/JPTO08851130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4639435ad365d3ec9fd6e3c99d05c85175aa8909e469e5f09709e28a90a48a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPTO09078180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e816caa96d95b722ffce01cf216e39c009813b024983cdd377c278397c32c0. 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/JPTO08960350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3196c12e5f9d31d469f53adcf6de52f44a66ccb1f7a647c62dcb114c6a6b98b. 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/JPTO08851050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3afeebc781933a5207a4ea473cf4a38ac41e24c0cd4fbca1536075b5fab91e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPTO09081260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa963a84c6b9eab073391a3000d82a1f55485c9513491bc845dbd313238b7d3bf. 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/JPTO08851060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd583cf92dd14e7cdfd06c831ba9839ae5ce83108f7d10f00e899553d7c2e57c1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPTO08751640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffaed5f7e9dc8ab637b9af531aeab5a2edc86f44374ccc2a5c086b74b23685d. 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/JPTO09081230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c1468cd8e88ec017045563189e3db87830d2e90f98ca481cbd62e227139b12. 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/JPTO09003610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbeea83d68db1eb48a0e859a0252ebe55768269926f1ab41456e019941a228a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPTO09067450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42f04f5a19e8e093a3269895061bd0ea256295d43dce200574f2838c40693ed. 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/JPTO08628320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282e1f5e999f86f3746539db5532b01778b7f67a5931b98d74ef0603f5feb66d. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/JPTO09126370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ceed1a9387674957b6b8199c9d77aee624c8ed4d0ff5f21aa1f1c30328ce35. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPTO09209810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3cf5f3ad835e3253b4b7add05d77d913e71abeca937d3f8079dc1c5b78e9e8. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JPTO08628290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1da8837fc80462becdcd425da7d14e56d876940ffd116462abe9e06548b6f6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPTO09305010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dfe2520751dc5d13b860dc0d2c215bf36dbb8db1ac9477b4444b9ae316dccf. 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/JPTO08628310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb2754b21502a476b4ffa5e073878aceeca04a6d55b5c6dacaa8223d5f7cffa. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/JPTO08751680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10eb0b868c5e7ace2bfe0ed451e7ad7a745712006c30c98d63d690738648788f. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/JPTO09332880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047e9bf3339d1917eb362e95637188959e6692ce41b8a0f1d912333f5745f095. 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/JPTO09081280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2453d9a5786fec1b52962cdf05e2588a4892125ac61f8168451f66e54c52f904. 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/JPTO09501730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd804a9512b53ed20890378a41441be5713b803711aa96621e49a7e4964e60c48. 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/JPTO08961270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d902e1ccf5155da0a12ebd2540bbae3fc1cc795fca481e1720e4c2127cefc81. 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/JPTO09606920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff39f768028364d08ee12f7f30c1b00594a2b3097321beceb26ca7017b084982. 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/JPPO09903120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fa207436650e6021d1cdba3d60f73971dccbe6c6746fb53f0281e86f4626de. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/JPTO08961230.