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 0xac214f44687e5f71331ccb104d09baaea120aa39ce39da67b3b6f987a52c7c28. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7d29a61-fd0e-456c-a656-b748f96fdfd1.json and https://artists.proofprofile.net/proofs/artist/a7d29a61-fd0e-456c-a656-b748f96fdfd1.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 0x809002ec206912e5ace9aabe389436029552b38063475c80ca3c7fcccabacfc9. 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/JPH201100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b871be427fc5d41a900c24d861d7a76100307a895047555eec3b2c9017c68f. 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/JPH201100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec8b50683fd3808bf6b9238c991cd883a601444b1cbe856032cb65414816704. 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/JPH201100032.
マッシュルームカットとダッフルコート
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe680b51f9c6afdcfbfce9efb0940a0bf0e3cfc2fec183a44c236f89028f0bede. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/JPH201100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fb9b9b240fdc6ecad1a116c26916a77559bdfd44b5c1a6e7028d7abc630ef4. 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/JPH201100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda4ed432e406429639cba6075f97575db67707372fe6cee98448ed0e238d3f0. 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/JPH201100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63706bb776d46509b663c778cf7f512611d4ebe25a8937622a0c81a2e257f02. 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/JPH201100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d6c6aed5c79eb1cdd50ae438097eadf53c22177da96531979c3352a874e263. 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/JPH201100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5208eb1943c5c3dabb2b2902d0ab28a2e9d90cc10ce92ab198dad74569899195. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPH201100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fb1f1336034231151807fb42a0051c09f32cd0bcb7e50639d6fe8f375fd024. 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/JPH201100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446b08244128897f1e5ea6cbec111acfd7fb61300987bd18949b4430cf2038cd. 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/JPH201100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34853185a6875b85c1866cc4cc39f93529bbd03de8390ad65102dce22e47f5b8. 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/JPH201100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5f0b5fef30bfaf2b5a96550c17c15d01a37cfeb69bcd7cc987620c5ba49797. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPH201100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c29ab5718b92eacd45897a8397d67416f9a8dffecb97b26581cb31bdd2352b9. 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/JPH200800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0bb44a6691318aea2fa671f4ebba76fa794e0844141984467c5802c66afd77. 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/JPH200800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad9ac63f5323d8a4fc9e47212c17125030430f3808fc5b375676bf9e1ad2afb. 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/JPH200800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a0fb972f7446cc0a34c67b61358c597a47e4ebebc6ac1973df270d8be00a85. 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/JPH200800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c94a558a1d5eeb413f0139a5e680c2d18de4cd9ad6704b87549341db7eefaa7. 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/JPH202400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e7c3b99ede098276565eb943f2960db5dc6226be761c2a64e6561ce2d36949. 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/JPH202400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cff3fa925eced32f74a1ffbcbd3de6beb436e768d515b2847ab639f64758ca2. 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/JPH202400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20033d150ad6f245cfb7f10661ed82018f1fd105e3201afb8f3d1b140f4dfb99. 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/JPH202400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b89e7eaa633fb7f6560f0f066f5ed784d9a9f509c34c4177bea1f4f9f171efb. 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/JPH202400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf58f1d3ea176adf1a072198ece288720d502cfae517d086dfdffc363f3e64e7. 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/JPH202400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35db3a93b3b448a21160256d66d16042596302e783a884a6e5825b72a0344f34. 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/JPH202400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a1bfe1506fb23c26ff0cb7576c83358db0a05a583ad99afb925ba0ecd38f47. 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/JPH202400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b44e41f066c0d5a50096a303b303f922e91edd619856a1179720ff80e884b7. 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/JPH202400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ea7d15e79573c966a5273892a96c8f0b6602ca0cf77bbe291d4f850cfef076. 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/JPH202400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0539fdb93934170f934bbcf56ea7500513a34dca8ee178e3ebc913fc0c2716f1. 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/JPH202400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05df63878ac25fd5683421bcc553575cfc2014f4e367ecc9ff032dd43638b69a. 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/JPH202400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3eecf6384cd3d24ade2034ee9e425afa39aa9eee9b466063cfc891c126254c0. 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/JPH202400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c1e69f2b42da96295c84d0d0f7bcf305571f43a29a73bb18379a277eaef1c2. 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/JPH202400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffef4f79d860fa3dd70f9353fa25f6d9d81dfdbc70d201879e6cf73fd5e61946. 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/JPH202400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2281f4b83a994af1a6398652a2e71b2071d743c8e2e48558a828521556693217. 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/JPH202400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e43e8cc0e47efbf86ae9d34fc2f1b4b6198cc63ee2c01fbcd5f9c6a59bb167. 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/JPH202400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878fefc5f3f5259fa69cba7285e5878612f69f2ed6f82f5435786001953b4672. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/JPTK09000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff99fae29a0e848ae0485d6cbd5f9783bdeacd5b5233060f0d6a271cdaf7e226. 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/JPTK09000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e6abb0ab722fdd96c1a3ee9333ca538b351088f8702fc97c6efaf608fc3814. 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/JPTK09000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb550985d3d6f2b9720b5952b1c0a24e38b3e8908782f6cb4398d7f2f6cc327a. 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/JPTK09000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aec3833e52550eb71f9bca4db93a640943b3dce1c1f0a2c0fbe979069bf1cc. 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/JPTK09000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318007b1bd52b05589b5df7749141562eacb1f0c6a065093bf969912d6c81469. 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/JPTK09000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9964cca93d68486406f0b2f658717c2ee069dcf51dfb54090235b75dc1d7fe65. 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/JPTK09000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990959403b815116344cd71959485657a5332d0f0faf2421c54351a0f24a7fa4. 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/JPTK09000200.