1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf2ac04daf18bb32c8f0e2078589abd01879fb64cbb5f54fa64cf655f926899f7. 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/1101de61-c70a-454c-b794-f794b11c0e8f.json and https://artists.proofprofile.net/proofs/artist/1101de61-c70a-454c-b794-f794b11c0e8f.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 → block OTSBitcoinBlock must exist at that height 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 0x6337ea5abd225a35f9c64e9ff6837dfd1725bf9ae68741f74ef56affad278a46. 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/JPCO02002670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f430553a269677fb9487c711f7d2f298289d756719e6752ca51f74acf6898a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPCO02002678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8d9dfd7489e3422ea1c3f6d6c87d538a2add1824ca5e7113a9fd692eef85de. 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/JPCO01913640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4119f4dbe8d942f7263a0e9367b5c05c518a0ccdd793b1144267a8dc7cd2f806. 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/JPCO01724530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adb2c6b80aef69adf044b4577896d0f61fce72d7ab13d79fefb24ed04172ed2. 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/JPCO01913670.
バナナチョモランマの乱 (無修正版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06924ca1d42621b020b097b89ea3ac5059f9682d53bea625916d61c3e5c022da. 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/JPCO01913690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f0c6ef9559e98a21af1f5c220d2f9ae9bc355e3474fb9743acb3cfe1fc8bcf. 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/JPCO01913700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046cf65e8613847f78bceccb12576bb0731fd02847b1ad1ab55254cd3f896bef. 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/JPCO01913710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44023764337fe1c157aa2754c684417edaf8bac6e4ad0eae9a9a3d6df1305f5. 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/JPCO01806700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44470e9d2caf171f56f2acec2981091ef8fb123b1afe8f7a4aaaf23ac38d49d3. 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/JPG751300581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe681116ec2aed2e93eae3f7e2b7c4584397c2745931c464387c32283bdbd727e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPVI01406810.
ダスティー！ダスティーストマック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9da2548377d4911e91c7e444b16116fc18e7d8c3092856c444287a58dbeb1ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPVI01440720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dabc407babe3074e64553f9b05ae76a98225c8a68d5ba64ac0b8bd8048529e3. 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/JPVI01406800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf10974b0f1b799fd9d911ac868c6033ab482e9f81df5937f6804cb38ea11d5f. 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/JPG751100674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207729c302d3c5ee69ebe389c8537b69f90922379af72d85d01433c2ee179ad4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPG751100675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504becfe8b319a988557fc5818b25f65982cd313f8cce487ee8632f8b087ded6. 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/JPG751100678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b4c1d5d217c70269b119c9a4ed24975d7d7c5a5ccfab8d25911a19f4e7038e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPG751100681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ba9a094ecd2a76309bb22cb8b82cbfd2b186b2a9606d1497e300cc4b9d3e7f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPCO02427490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a40009d3dd5f70c1cf30b68a2bc5b0cf2a8558c4ca852572af908223174b0a. 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/JPCO02031770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ea2f192b5078a21e34aad0ce2cc4aafd7d1dd8efd4c78d6da0e0dfdf08a282. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPCO02031790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac2ee3ffb130964a1391a1a894306925f4867b45e5c28b799360adbceaad3d8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPCO02031798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ea2f192b5078a21e34aad0ce2cc4aafd7d1dd8efd4c78d6da0e0dfdf08a282. 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/JPCO02031790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c39b99fc027b559ac87ecc518e4dd06489825522b45a4521be90758f30f03f3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPCO01930890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff143ffecc170acd1d6b2ef5b1ffb9c911adb8ead83cb44bad0c0a6f178c6327. 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/JPCO01930910.
TVアニメ「ピアノの森」エンディングテーマ 「帰る場所があるということ」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44023764337fe1c157aa2754c684417edaf8bac6e4ad0eae9a9a3d6df1305f5. 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/JPCO01806700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062c8f30d7d46f154a4ba9ce6c6b08d557d5e57c0dc7fe5139b205a99f8db112. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPCO01806708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4119f4dbe8d942f7263a0e9367b5c05c518a0ccdd793b1144267a8dc7cd2f806. 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/JPCO01724530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc328c91fcf3f1bce2b8e38cc1c5f4dee4da6da5dbdb38a1cb6fd2fcd672794e2. 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/JPCO01724550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dabc407babe3074e64553f9b05ae76a98225c8a68d5ba64ac0b8bd8048529e3. 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/JPVI01406800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe681116ec2aed2e93eae3f7e2b7c4584397c2745931c464387c32283bdbd727e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPVI01406810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44470e9d2caf171f56f2acec2981091ef8fb123b1afe8f7a4aaaf23ac38d49d3. 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/JPG751300581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba690b6e70cbb67e4851f839043af5d13a8392c0ff044e8c682e15d4eb7ca20f. 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/JPG751300582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e8f3ce45dd3ddaf11abd6d223a1b5a0c8c9864e1137d823e64c5cfefd5cdb0. 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/JPG751300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e606d07316e201414c0a98043bffc9f6152eab4c1ac27d9d152fc6ce98fc27. 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/JPG751300017.