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 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 0x4c2f30b11913d0ecce55484f0e10cf618628ab59eb9538cc3e43a7524e3a0541. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d95d360-490e-46b6-b265-0f2c351654f4.json and https://artists.proofprofile.net/proofs/artist/7d95d360-490e-46b6-b265-0f2c351654f4.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 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 0xa1c9a5267eb9910198b7b75252cb801dc791b5598902529172e31cd3bb10a2dd. 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/JPW562107929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a03c5294ee9979fe15bc777e57524cf40af45d20b639e907b6718e9e6f9952. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPW562107930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e2e461dfdedd04861a28745dc3b092e74a9770658de5624905cf0ad717097a. 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/JPW562107931.
雨、時々、カランコロン (T.V. Brilliance of Nostalgia Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dfc7ebfe3935f15e646dabb00e78a09bbe429a0cffa2961d5e7700c864741c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPW562107932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9e0e3be87bbfc90337b17045aa889ea376bfd251c6c8330a3564b1c81790ca. 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/JPW562107933.
メイドノココロハ アヤツリドール (MK Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34763f3581d02a0107fd7940d3102bb26f394db13516855ccab8044662844cd0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPW562107934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147539e96609bb527f53c131a40f238fe7dd8abaa4a78488907ff866c4b194cb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPW562107935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6898f3038263a3234d00189664b4285311ea2c7b16974be9967df3720f65067. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/JPW562107936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1d7a914e2e2bfc8b7da921ba0b95fa34083160dbbbe4011ce8f687cd1ffcd4. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/JPW562107937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d9b9f6004e200a290b6acb0646112538466857ef3a6dd645668a7bc273e954. 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/JPW562107920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc524e644f0637783ead22477ad149053c83b9e469bd0ccdf9bea91a0809b6e30. 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/JPW562107923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260612c8e67e48256122b6bc765f48611829a324ad01d16dd3ed9e8893b0ce6e. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/JPW562107927.
Paranoia（SBver2 Remix）(feat. 森羅万象 / あやぽんず＊&あよ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9406cb64585ef97b30fef36fc695ef5e6b60e14748d53f6494c793577bf07ea7. 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/JPW561907109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165ceb1cc19a73df008b54f9afd69c99d4cf0a5f583ff8b8fc627e6bf9399d8f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JPW562107922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886c525912015b7aed0622066e7edbf1de500666b0d4b97e8df59f303339378f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JPW562107925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d21d03e18dc50c1600a7699a092f40c8cdb018ceea7f5ec886715ba88f102c9. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JPW561904578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1257aeedc19f2191dc35c0dce10b3b9f56e238a5edd02c035c49b6c6f8550322. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/JPW562107921.
インモータル フィロソフィー feat.あやぽんず＊&あよ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919ba6f625bbab1b75bf507269aeb7adecfe29c019d4d0a5f3a9309d3dd830f8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPW562107926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1cca45737968305b823364ab2a1c11748c93963580cefcf2a75ec4ec700908. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/JPW561804457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddbc540c5fa407ead7e347363323d83e4e3cf2cc6df3c65458e59dc392e49d9. 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/JPW562107924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01abc9b5263494bdae0f22ed8dc80c086ea6c51df163bc4ce12785ddd49dda4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPW562107928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b31a93b539a31b4f4432320195102073191c857fcf959f2a2bdcf54cba086b. 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/JPW562103209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70058be86fe89d5d49e52d2cc2addacb4a88200c7220b1ed9589ba54c0f92451. 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/JPW562104280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8440f4d490c472db7ba6f3f84e3b7c27644c23a6d51f250ac05e1fcdf57260. 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/JPW562111926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d6724f1f6c9b21b28e7bf79536bbc7e58b467ebe327ec40ea09af1ce3a8581. 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/JPW562111927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ba7b0714ba29276a2912466c48e8bd633cb872b283b2a4cd8c6d459a4e0eeb. 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/JPW562111928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646364fa2985f878714d46153a296d0bc5d2f770626e82dc5603a2b12efe60ed. 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/JPW562111929.