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 0x827b230db9319f126aa555fb8a869fda8e389cc44b56e3241ce415986ce1d3b7. 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/119cb53d-dff1-45f1-a47d-e872cb18d481.json and https://artists.proofprofile.net/proofs/artist/119cb53d-dff1-45f1-a47d-e872cb18d481.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 0xf0faa67a244ef7670904770087d7738913ae78e134290e92532a5892145e4524. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPA651904591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f65e62e89013839be31692cb462ccfe60d52034b95fe0d3bcca01165527415. 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/JPA651904595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1730f0ff77240bfe874b47332dae21ee8a811bff02d1f69a4c9359c683bce2f1. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/JPA651904597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef0df67c2ebea77e82c29799ab020253d9d57dded0f2da11919dfbb333a650a. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/JPJ222101612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c43f7cd2aee0574ac86f0bc2dc5d73c403e80eafd625047f57d25b8f71654a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPJ222101613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9163aaa4477facc4505ef6cf3a0bd7c268e4670460e5f4ee76eba7b623ec0a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPJ222101614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95799d244b4cd98a481d7775c5981172a7d8105a3bb567d75bd846a28a71a8cf. 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/JPJ222001556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5255335d67a9879d468a9e49f9ca91197a7faaec30d06c20baf7ed1018ba4c3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPJ222001558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaddbde7c0af5c6e266bf24342a51fd28fa845f65ada78f90a42fcd1eff4a3e6. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPJ222001559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81173491c890e6bfc6ff1c53a26d80f41dd014a0cc91acb442e101b2cf57a65. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPJ222001560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d631dbc0f7c5c5b99ae466191425f12f09456d8a3fe68db90a9a311ea8630e. 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/JPJ222001562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa744cccee248467dfe8da42ffd1a094d13dcdb98b20bba34296f6f4d18735fdd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPJ222001564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b5a6e9a89ce5a8b22455a834f0c3e113cbc82b57194c654e5535020041d88d. 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/JPJ222001566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ab3e2f425759ec89c3b92bc31892b84ef88a5fd50067dc3d25e90fbe390d5c. 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/JPJ222001567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0d6a12dbb8c63e124169e89d97f5c6576c4c570b280289ad5cda4a539333b1. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/JPJ222001555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaddbde7c0af5c6e266bf24342a51fd28fa845f65ada78f90a42fcd1eff4a3e6. 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/JPJ222001559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81173491c890e6bfc6ff1c53a26d80f41dd014a0cc91acb442e101b2cf57a65. 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/JPJ222001560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d83c3af4456eec7ed1159b89d57ccce7d5d224e9378569f4fc90bee643c70f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPJ222001561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa744cccee248467dfe8da42ffd1a094d13dcdb98b20bba34296f6f4d18735fdd. 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/JPJ222001564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ab3e2f425759ec89c3b92bc31892b84ef88a5fd50067dc3d25e90fbe390d5c. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/JPJ222001567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8618141bbe313a52b7621e92d6b6fc2ee91f1d96e91b19847ab41d7e0705db87. 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/JPJ222202146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8325f117b396f7837df82d4bec8385711c8e7368e9c726cc200867fc1b2bf0d9. 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/JPJ222302589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef94bba5fd57509020b7ab7252eba5cc12efc2273fc61d68aabdd45f542802ba. 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/JPJ222302590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d913cc8e18993200da1d91361f1be53c680f2a14f6c7cd3b29123beec92a7c7. 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/JPJ222302708.
アメイジングハッピーハロウィンナイト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75134cace1fb759aa4a7010c1036dabf58246e8d7909bfdf4c54ba37fb6c235a. 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/JPJ222403215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9b81ee09a6375e830932769e38c36c44bc0b2df2a5ebfac09425765a3031b0. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/TCJPS2243209.
Exit Tunes Presents Vocalodelight feat. Hatsune Miku-Digital Edition-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb64b43cb2f31e1f6463c700a449390d7e8a6195632a5864318ef5f454804914. 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/JPA651904589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d08d4cacc89895ad354298368a3de9e78294b03e92addf2c6eecf5e2abf3e7. 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/JPZ922103982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab16ff819b056f14e03871f9a15dba51bbc323c609580376507a9bcd0d40f6b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPA652400015.