may refer to: Places Hikari Station, a station on Sanyō Main Line in Hikari, Yamaguchi Hikari, Chiba, a former town in Sousa District, Chiba, Japan Hikari, Yamaguchi, a city in Yamaguchi Prefecture,
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 0x7327eeb52acfc636bcc475e9e7814b9f2823e921005d05557a36bace700c8617. 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/94f1eedb-a09b-48e4-9270-fb2a717ce80b.json and https://artists.proofprofile.net/proofs/artist/94f1eedb-a09b-48e4-9270-fb2a717ce80b.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 0xb343c4710d7aa5403d6814a7837106a2df02ded79bfdb6a0165a55d556cbfd93. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZPEW2113122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e5478e66b43d92a715110c9266ec5d2e7f6f54105332ca9747f2761f4b922b. 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/QZN882184862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea9b39c685b21e73ec729a6c7a9c797f6f0aaad0d8aae29d5d2e30af2caab3c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZFYX2302540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0b711509dcacc06a6e3eff22890ad83105baf8b95c1d0005a77180467a97ff. 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/USANG2296692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066267e06dcf7a99e6787aa773460ec98057e9fd77529d4f7a4656e4d6c08024. 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/QM3DF2201053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d19022aca515ebc0e1a123c44350f2a60225f7cb06b510cf49245a3a20f8a50. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QM3DF2247632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd435c80fe91b7269a53175c91797fb4577aff507de3a543a8b6514cb8761497d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/UKZGC2304868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f587da210f812a4eff397d5c7032b63c8834145d90ac10af7d36e160a0773c. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/UKZGC2304871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5d8744e9cb0872a7f54596fcc6640ed3c123580bc137a92b296d2f6318ab39. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UKZGC2304872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3736823c03e623c1b33fea4cf4ecf5a68151bbf430ce0fdff74e6df21ad35e13. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKZGC2306484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25386cef0c088dd0d962a93d8e547600e3f0f5204ec96d8c308d750834806afd. 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/QMANG2213355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426858e21ab31c2f6f7e7e6e34431a67eb3d61edb7631a20798e7fb997a51ab1. 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/QMANG2209997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683341492602e616af75fdd74a065e13dbc2f175545b1f8782660e7bd678fdde. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/UKZGC2307982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3633c0a471a0de07d6a812fbae7c5209dc415f187eca6f4bc17fa9145a1bb5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKZGC2307983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc925a1b7af6f143d8cae6a49dabd10b6f8ebb749e532defd1a6a698cd8f4e2b7. 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/UKZGC2307984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fb4898a278f395ee8ffa045e6ce9165ba37a41dc5f769d313e75a699bfaee2. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/UKZGC2307986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552f28d4933dc368d547c9b7d8363a7c26a94970672b61d11cb4d5d0f7a027a5. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZVEM2365885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81be9591c05b9f55abfb854b31b1475875373be009db74740bac54852338fbaa. 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/QMANG2223022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d2666de6af40175d9dfdda674808918764827f4edd98a7c2c9aad0c28e1212. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/QMANG2252218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6c03fee79d7de5d01ad31a963dfe1e1cd3268e0560c4701e70276a2231233e. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QMANG2252221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab72b5428bbb34e3e8aa5ffa7f090c5d134cc34a02d6484e61e7711970d6bfe. 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/QMANG2252220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3130bd17089f508f8c60056103439b4fe40b7718ee613d610d3a271b5249f2. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QMANG2252222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6431c746bf464e2bb060ff6647ac70eaae7c95a6b41658616465e812dae13ffb. 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/US3DF2522526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e5478e66b43d92a715110c9266ec5d2e7f6f54105332ca9747f2761f4b922b. 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/QZN882184862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bdee97d88937e7e10c999af184c194bdf4c97065455675c1a95cc74919356a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMANG2239602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3c107be0ef1d9250e84b7442df44d0f8a02274a2bd10667aba30de1ebfdb65. 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/QZVEM2307983.