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 0x43d0b4027d2ec5fc4c4dc8a412edd29fe2c4bdb25b9b674a5c1a04bc56157dd8. 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/045ae0b1-4c2e-4117-a66a-68003d40de1c.json and https://artists.proofprofile.net/proofs/artist/045ae0b1-4c2e-4117-a66a-68003d40de1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
漢花、美しき日々よ song by 大和守安定･陸奥守吉行･長曽袮虎徹
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 0x5a74f12fc1145b1dbcd40c44bc5a3e2478e9aa44027245468528caf059b6c8f3. 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/JPQ321800134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed8ba2a61f57501df3adadbc19dfb9be6e65d1b9f7fdd1fffbb84df0ae943e4. 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/JPQ321800132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e519661c2d3156b00d438c33e304c7935f225aa5feab73d13895ee8895e60d. 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/JPQ321800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4141809c8b803bd3496492a9d975f08b342dbf5c0d3e1241f2307bb550195a3b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPQ321800125.
誰のモノでもない人生 song by 和泉守兼定･巴形薙刀
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebf007e460ce2dfa1a4b9d20122ddb48245d7385d82d3beda3df3dcc6cd7274. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPQ321800136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeca497da4610f2e320545654b6278e22a67a468bbed79c618fe5e0e67c9a1bc. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPQ321800130.
Touken Ranbu:The Musical -Musubi no Hibiki, Hajimari no Ne- (Tsujouban)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4141809c8b803bd3496492a9d975f08b342dbf5c0d3e1241f2307bb550195a3b. 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/JPQ321800125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a32b84ec58e533f9cb42a29a721f0bd1f1750cd9fd27a5fda29c707751bd10. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPQ321800128.
ミュージカル『刀剣乱舞』 ～結びの響、始まりの音～ (通常盤)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8d634600fe0a4a2bb10fdd2d760e695d29128edc01a1449328a2fc4d3f0f35. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPQ321800147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa919c56852ed4f2120f18607ee232ac8200325f3de6f34cfde6f2b436ad55460. 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/JPQ321800150.
かっぽれ～朧月の下～ - 千秋楽バージョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172389823652694dfe2eafc8d1305b13b0fafc06efae59e36b80388c5eed9edc. 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/JPQ321800152.
よさこい～夢抱いて～ - 千秋楽バージョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad90f7645d6ac601fbbd3ee10464f1beef4c634f40c678a9af806ff3f49973b. 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/JPQ321800153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094ae42f0e571b89a65468e1c56d21751607a25fb0df31a57afa35be6b9bfeac. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPQ321800154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83a2eb361938f4bf8e1e616a90b5c56bfcd2ae5d9f7fcd06516bcddac197a5d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPQ321800155.
いびつないし song by 大和守安定・和泉守兼定・堀川国広・長曽祢虎徹
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c5bb5db68173f3d4b735342ba882b84b3231b58924dd82e527491849bc4c6a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:55:19Z), 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/JPQ321800156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396f5e2f6a5b17b1a1fe7bddf34700bd0c36b035fefe74494364eb4d347fed1f. 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/JPQ321800157.
漢花、美しき日々よ song by 大和守安定・陸奥守吉行・長曽祢虎徹
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a74f12fc1145b1dbcd40c44bc5a3e2478e9aa44027245468528caf059b6c8f3. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPQ321800134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e52cece020e9337110bdf08e777def646b30adf6d0dd2d07da7144604fc0714. 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/JPQ321800158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f284d108505ea2bc88c74578ddbaf32bc326a078ffd5da16c251491d09adde. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/JPQ321800159.
白刃の月 song by 土方歳三・島田 魁・中島 登・榎本武揚
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abe5eccae94f4800307f38822dd0d499f1f4886a4a1b35869917256487d419f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/JPQ321800161.