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 0x0d2c2710ed06c81eb4e8fb9d949aa7f8c146e390c3c4a2e81078be63283985d4. 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/132a36b6-be17-4d84-a57d-3ca6f7b190b8.json and https://artists.proofprofile.net/proofs/artist/132a36b6-be17-4d84-a57d-3ca6f7b190b8.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 0x7136065d61f5d4d6bd7236bac3599f65ba2257e8c65194b4ac81edd8b19491cf. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/TCJPW2306672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998b50613776ecb35c48ce53d49f8da69a1e0ff4c7dd366605c99eeb9588b8d9. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCJPW2306675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954549fd380806826cb155217ef47ec6703e603e3fa23924abdc967b7cc91318. 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/JPM572100008.
やくしまるえつこメトロオーケストラ - ノルニル・少年よ我に帰れ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c9788a9c904af9a1fa5066c79ae3176337e280312f19f0685d3266b336b1f5. 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/JPM572100016.
Yakushimaru Etsuko Metro Orchestra - Nornir / Boys, come back to me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c9788a9c904af9a1fa5066c79ae3176337e280312f19f0685d3266b336b1f5. 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/JPM572100016.
ぼくのおひめさま -人魚姫 灰かぶり-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728c05ceeee4c2e04405b5c7c96332713e2eff6be92eec206d1d266515ecdd6b. 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/JPM572000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a7cacf437a7b535265f9ef1c6cf332f85fa285024cf84e1b904b78ccaaaad8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPY2333775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8fcfa069712233e4cacff25eb7dc75da65c248830854aa1e731617d96e858e. 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/TCJPY2333778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccfac0f067e47e02d2a2b85371af27f46bdba96fbb447a453e9e9c1181f4dd3. 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/JPM571300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2755591ec1df271351c806a7cb419e73421e4d7583e78ac6ac5def99f819a3fb. 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/JPM571300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc64ef79c0ef5accb876f70c6886d694f9970426f8a15f85c5bc4be7fa49233. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/JPM571300001.
Boys, come back to me (RADIO ONSEN EUTOPIA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f241f18990fde1cb733e747e347a1209bc77f4563679902c0b6ba37ffda4c18. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPM571300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22d67656dd2d6669544d2275963d4540df5e221602adce37285c3f4935f7dbb. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:02:03Z), 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/JPM571300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc64ef79c0ef5accb876f70c6886d694f9970426f8a15f85c5bc4be7fa49233. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPM571300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26469ece6f23d2c39c99341863e5298a4bc27b5fcd184d097d991a9ff2101f5. 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/TCJPE1669386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d197a61c5976dbea4e7c017936d5ba85c62e7145c1c2a278ce211afb0fa9e5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPE1669387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bedcb941e4a773beb66f5237bd6ae1013839ed7a27de86c98d8d634c8d8706. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:45:33Z), 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/JPM571300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f3bdfd40575b68efe40d30f8dae1e9dd7a0f78086f5a88f0ad4feef45bd785. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCJPE1669388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22d67656dd2d6669544d2275963d4540df5e221602adce37285c3f4935f7dbb. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPM571300008.
Welcome to the Dimension X / Absolutely Monsieur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bd17b483c30c915b6bc56fe9dd7967f96e2f89c4d72a5ab0798e11ab065c06. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/JPG751300613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9310056260036b6613a2538ff626da45c38be831bc922298720c8e4416e44b. 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/JPM571300048.
Yakushimaru Experiment - Flying Tentacles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88b6de50d65c9c11381688a6e1cc3372efbfe5f3b7aa2945d2761796bdb5d5e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPKI01611305.
「ニュームーンに恋して」やくしまるえつこ/「eternal eternity」セーラーウラヌス(CV.皆川純子)×セーラーネプチューン(CV.大原さやか)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1a219cd545b7d51d68836884f885c3cc842fde2abfb620a73b77a760a9fe54. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/JPM571700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1d2770abd08f38ab3ee355b9d62222c1173da3e8af70dc76154d5ee3228cc8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPM571700003.
AfterSchoolDi (e) stra (u) ction - Spell remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b18191d13b5324dde336438529464b512f6efe27622cd92158ab55da50226d9. 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/JPM571800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642f014e4299e78c92978a577dbdae67c602afbf1cea344b7dc8959c45c03611. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T07:36:28Z), 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/JPM571800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1704e015d96ac93ecf41b8a2ae2dd06989471398c0667a0cc78fca85ea04c18b. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JPM571900033.
Yakushimaru Etsuko Metro Orchestra - Existence of Us
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ea1c20324fee3f94e55317d5b070c9c4cdeea75eb966653e74cb245c9a9b9d. 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/JPM572200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9163f10889b7b276c60448e0ae92f88b4712033adbaf6c2091ea21bd77a62b3e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPM572200002.
やくしまるえつこメトロオーケストラ - 僕の存在証明
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9163f10889b7b276c60448e0ae92f88b4712033adbaf6c2091ea21bd77a62b3e. 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/JPM572200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b3514d65a186a3b57c06d1d68a670317e15d9fe300ab47ada5e7c34d7926cc. 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/JPB601701843.
Pretty Guardian Sailor Moon Crystal Original Soundtrack 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8b8b763aa3f32c5b98b0d397b10738b00f974b291fd01114f28d60ae24f409. 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/JPKI01611983.
All kinds of People ～love Burt Bacharach～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7a9174d118f40af0194c98bc1db436113e51b645d19f08c47b3755d10b26e9. 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/JPJ900919140.