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 0xe488777ec973c4d098998b636c9b8e021867cb5a5b06132fc89e0cbe3a0a9c39. 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/a33812d4-7cd1-40a8-b1f1-7e5c63477ce1.json and https://artists.proofprofile.net/proofs/artist/a33812d4-7cd1-40a8-b1f1-7e5c63477ce1.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640b5f0013856b0103bbf14a6e36af5b5c10ab80e25c5c17a9d3655eb4a31b7b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPE451700115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9e103e44e0457b0bf72353ee12ec0d829e9f55f266b86ff1ed9b8d46560db0. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPE451600089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb344daa5724b370812ec06e73dfdcbb1e072ace53d35d8988977ce8ef3e26c33. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPE451700124.
君という神話／Goodbye Seven Seas (アニメ「神様になった日」オープニング＆エンディングソング)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2ccd7f401cf1c74f410ade8b741f9d12e1dd8633e23bb3bf781dc7cefea1ec. 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/JPE452200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846ad01070672b610d83784d39447505cc9a6b4132c262d2f38455cc6e96cb8b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPE452200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3fc6d8dc9b74f494fdf4ba5fdfc841240cea044e92ed9043f2aeaed095d7b1. 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/JPE452200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90e738fc0091db265522cf24db87d3c2db54d387815d92ddb31574d40ae706b. 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/JPE452200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63084f71828e0cc5f12bad7b8d0d1099cf5b296fde3d0344eeab2158a3603c1f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPE452200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1180f634cea0b7b5861223356c2b5ed6721080116221a4581e3d62e56e0b95. 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/JPE452200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d271e35d4d031c86a003224ebce421825580023772de416e9a2bf81ae8542b. 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/JPE452200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35356b9c593feba1725f0289baeb538e9715174aaaf6b73890c478dd89522a96. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPE451400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78c52ea54e1ee50c857a8d8cdf9d622563dbaf32f815347e3785698cd945783. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPE451400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4ba879526ae32b307daf07b8f69592b5ff20810ea32d4d68e1fc375411352b. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:34:39Z), 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/JPE452400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1018c2ea39789082b65d527f4522be30cac75dab4ba867f9b6e3131c321d45db. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/JPE452400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f2fcab0d61e30cc6ff2af9054e9d70bf6840be44918058513b0c8c1745e848. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:02:58Z), 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/JPE452400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa413d9bd799bcc454de0ae6402e4c4fec87ea09b2abd28260da2d9dcce6f99e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPE452400043.
夏凪ぎ／宝物になった日 （ＴＶアニメ「神様になった日」挿入歌）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd037cd8efbcaae21665256e474320b3fbbfb74211ae982ea0dd985ac3a865ff. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPE452400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e3a76f6cdc7a95f992424f043a62edb323c73cb7bb609360d9a2cf666b6704. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:52:50Z), 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/JPE452400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6616e79a9848b017669eb6627f830e8e1c8455d61b65c4f8f4e1279ba15f60a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:33Z), 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/JPE452400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc6519606abc209e9cfeaf9fafbe61795e5f4cfc2501d683ffe1a8d5d58bb86. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/JPE452500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ebb3baaa7c1e80744d6c0a48785799f944aabaa0ce4ef6a2ba7e50eb4fc600. 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/JPE452400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27ea10c22ebfaff1d72b49d0ddbc51bbf18568cf909662bc41fae9528b2d095. 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/JPE452500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6616e79a9848b017669eb6627f830e8e1c8455d61b65c4f8f4e1279ba15f60a. 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/JPE452400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc6519606abc209e9cfeaf9fafbe61795e5f4cfc2501d683ffe1a8d5d58bb86. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPE452500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4ba879526ae32b307daf07b8f69592b5ff20810ea32d4d68e1fc375411352b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPE452400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1018c2ea39789082b65d527f4522be30cac75dab4ba867f9b6e3131c321d45db. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPE452400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f2fcab0d61e30cc6ff2af9054e9d70bf6840be44918058513b0c8c1745e848. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/JPE452400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7cfcee7caebaf3a9f88f0fe29c7005b1f86df3bcd1d7b23d0490a80e6c5c19. 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/JPE452400183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd037cd8efbcaae21665256e474320b3fbbfb74211ae982ea0dd985ac3a865ff. 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/JPE452400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa413d9bd799bcc454de0ae6402e4c4fec87ea09b2abd28260da2d9dcce6f99e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPE452400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e3a76f6cdc7a95f992424f043a62edb323c73cb7bb609360d9a2cf666b6704. 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/JPE452400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452196ef1d93f2ea576b7f430788a6215a7e81371262647d878b1d6600ad08b5. 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/JPE452500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708e715b306265c06ed7391698c65e08e638428e004c2afffbf17b64304116b8. 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/JPE452400181.