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 0xa7ccec13cb36682d0880c71511e9f5870dfea3077d615328b9434b110bfa1d9f. 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/ba5fdccd-bd89-45b5-be4d-f9bb2d136121.json and https://artists.proofprofile.net/proofs/artist/ba5fdccd-bd89-45b5-be4d-f9bb2d136121.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 0x54ca1b3a34a5f875090f5f8e0c0c32b12c55b738d77f7d8552ee60dddb32e0f4. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/JPN300300962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb690fa21337582abfc4a54a33674a5c40e8a4113e8ebe1790d2dc2b10268937e. 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/JPN300400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa234245bc3c740a52cfd12759d9f5497022732d8b8916b7eab0f069a845cc6ec. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:16:00Z), 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/JPN300400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c874b6f274d253f4c62aaab07518ef464e541b0c76cd79322734fb725e6fccf. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPN300400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ae66ef90ad734b23d335324a9679aabd6e3e2a25502144d0e85f20a9f4dc96. 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/JPN380900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc053ddb520850abea72cd5da8e7d53f5d8c70f5e96eb0dd25c9f851a44cfbb7. 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/JPN300400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fc19af77f4b5191b87d32b0940a98345034dd051b8ed362b581205808e7e2f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPN300400803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad3c1f0419fc436f388e47cf7a2f2b0224a89e61924e2470b69ee271180fa22. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:52:57Z), 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/JPN300400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327643808fcf804e2c31f26e281cbfe9a9d713e6c00838f7d40bdb5ef475fe3c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPN300501341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6df7c20028d4a90d387cee0dcfd6daed1753cca6ea076d3f354b9c6a748617. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPN300501521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb33a5d9d2dd5f4f5ebf3580749912c1d3cbbdcb97c85599d2e0a47f28d0493. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPN300500261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4716f48eb1780cbd6e877468fe99cb136c00a050a254b22d9f1273c16accb789. 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/JPN300501506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269bba5c0308bbcaa5481acef3511f2529d5b7a78afd71f2b000ad886329ee88. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/JPN300700163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93cbef1b07e183edb88c2166761a9f512e39cad92c275fcd12a3bd04da863f0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPN300700321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392ed8ecd0e7cfca91ef73fea7cb31497d4a81510130841d5a8923ea72126242. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/JPN380700403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b16e3ace3637ea077a4b8fa739dd9aa101a71c1d312825884c0756479378f6. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:31:52Z), 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/JPN300700942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f37eb89249d0bbc1ae0fb4774aa1409a445215987ebba8ac97264e92794d647. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:06:11Z), 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/JPN300700943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bf10158346c0a3f9c439abb5fa94159c77b30d5514c119b2ecc3ea35125035. 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/JPN300700944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1893c3ea00d5369c48004570044990f7ef7b12e3e87175c1a7856bcb64a82b7d. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:03Z), 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/JPN300700946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf824e148533924ca8224ebf09b9132cf0b62a850da7aad7a711f3efa84dea1. 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/JPN300700949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153d15c9ca33379975a411d329ade8b39d54d08a2db686cc3ff9d3e521b91a6f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPN300700953.
Villain's Pain(Hero's Come Back!!〜Other Side〜)/イマイケサンバ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a922c1ab3fa35a492ce5f699f27d257004f6e1393bfa5d9a463f0f0151b4ec4. 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/JPN300800864.
Villain's Pain(Hero's Come Back!!～Other Side～)/イマイケサンバ
家々 ～撰ばれてあることの恍惚と不安とふたつ我にあり～ -album mix-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b12104ab417b12bab4058b68beefedef4fab090eae7a84c96e9e49abfa121b. 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/JPN300400809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b4abaa3f29c0f3310a4c721d726afa479857bffd90c7f807a9691b5917d7b7. 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/JPN300301661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa110c859da1c568e50c4f868527f70c8775a8076fbb3f29e2c0780c02ea9b58a. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPN300700161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c05cc8080f5aa034f4b516cbf1d1c5aa271ced09bf9300506db47a88af1b5bb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:10:08Z), 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/JPZ921712824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0ab8c629bc3c792b5ff0f00e6975af00f17190fe94bee9763366933963cca9. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:57:20Z), 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/JPZ921712826.
虎と龍（DJ MITSU Super Rappin’ Remix） feat.ET-KING
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacd73f5cc8f4c9776d4a267a40b866188307ee0c8a9b4c6a49414c490c466f1. 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/JPZ921712829.
ココロオドル -original version- / Hero's Come Back!! BESTタッグ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa110c859da1c568e50c4f868527f70c8775a8076fbb3f29e2c0780c02ea9b58a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPN300700161.