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 0x98c74330691e2d5485a61362b3d3bbc25bf9e6a391e6624fa7a94505111a1e04. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8feb3118-5a72-4b89-9962-e6d200fff72b.json and https://artists.proofprofile.net/proofs/artist/8feb3118-5a72-4b89-9962-e6d200fff72b.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 0xd53f4b36f9cae4fee66309b0f02bf43a4129a133255442b4124f826d4715a1ff. 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/JPZ921802029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f92144dc168380749f78098afb086ed2f91ad4f05b219bbc3f3daa5fa0fb75. 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/JPW461800184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f6bfca6bb0f7af39ee95b26999934a2c110ae338fe7c43730b4dbd12e37e1a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QMFMF2001082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e933fce9deb51a3b420439ea948e76d6eb6ad91c10f985f1fd4fa57cdab1d8. 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/QMFMF2001163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372aac11d76233d4a0f66d3634212a71d6271d4635a5db2b86385b3630d8bbc3. 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/QM4TX2112303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb39a05ccb14c635b04fbbd7af574e61d6abd826c0e266c85720a43bece12f6. 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/QM4TX2112350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef04ffd9d3fd17e4bd6e410b1c565fbec4acf6149a8c200cf6cd3af90e985f68. 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/JPR502304143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022c3cc44e6ebb789ccd167f51aa45daded397304760b333c7f4157805b7ebb7. 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/JPR502402849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022c3cc44e6ebb789ccd167f51aa45daded397304760b333c7f4157805b7ebb7. 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/JPR502402849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca199230eb7dee26fafc30aa2d35cfb99dc568cac7fa1b615d6801caeb0186e5. 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/JPR502507615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52787df17f6fb9f697349e8f73a3d3e2a0b8db856e234c7c49478b351c86382. 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/JPR502511785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59d88bb5545932f0ad81de98a108a9e05a823420feb342253c29a677206edaa. 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/JPR502511786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafec251aaa1b4c81efb737477cf81931b0a6e131eed9d316d2714fb3c55c0b83. 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/JPR502511787.
Dreamin’ (feat. SUMIN, ☆Taku Takahashi) - Remastered 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9aefd2239c9d0f2bb661103db24fa79e40450bbb160fcbcc6cded7cc77ecee2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPR502511788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7a0b4d8b36c8856841409c4d60e1254297e3abef23a1e4c21e6d7c2748a302. 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/JPR502511789.
Moonlight Cruising (feat. KIRINJI) - Remastered 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d0b1b04dce79901cfde41bb3e652ab22d4f3d2d2907ae304a1ee955a68518f. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPR502511792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef2f7589eab4d4a7874166dfb4354fbcf0a5867f6adc548594595e08bf78cbd. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:11:52Z), 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/JPR502511793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06064c076aee0f5eb9d27644a44dccc3d32cd854c7aeed26f1c523c26a1ac7e0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL2000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9d237e22e8e430363830a745af7496a5c3a8905363b41de98ababc769f127b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPR962100198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd585aeba4e38f26a93319586ee6092ebc75c2780a427e53b0a504beb4b3b5486. 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/JPR962100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d0b44e0825adbb8d77a53efe0dbbb4660b5096d233d3ef6bd3cddd938cbf9e. 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/JPR962100194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06064c076aee0f5eb9d27644a44dccc3d32cd854c7aeed26f1c523c26a1ac7e0. 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/GBKPL2000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097d58f170a4f5d1c01a15fa5410446083fac3668c3c07d242bf6137c2cf4c66. 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/JPT592210515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e032457241e49697964d169d09364110fd9b52fe93842d1363541c528e3078. 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/JPY862300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe019c06727416c8e3989922eac0f3e19b59efe30005a37ce79d2b9e0382f4c3e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPG102100706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4efc654cb380ac33927500ce6cbfe99d686032d36f5751574043ccc6b95160b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPPO01901706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7debbb4093d0acbd3dc2abb22e4837ffc2f6fc086b8460ad2c74fc4d27f76c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPB602003309.
CITY FUNK -Twilight- mixed by DJ TARO of Rhythm & Groove (DJ MIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176e5b671dfbcdc2436103c441769eabd77e7e7f4b1ca0788e17d46f248b619c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPA2445122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4efc654cb380ac33927500ce6cbfe99d686032d36f5751574043ccc6b95160b. 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/JPPO01901706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2081d1ee029a01c1e07e36414ab298db63d3b3eb8c4fe1ebc1d85edf405f11aa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPVI02305388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a850713bab55549b8f6a1a356f06b1e521af96d5affbffa2a07aece11f6c38. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JP92N2201562.
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 0xef33b89a844da502b67ffd79a4de739ffef008cd2d6dab25e84954f0a545b17a. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/JPR962100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed8cc05c753aa7f624f14be0a19fd4703d2bab46ef7b0c24577151bbd6e55f6. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/JPM591001414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197439bd15db8990cd81f953af2be06c84073f98eda91abe06fc78fa8e3144df. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/JPVI02305389.