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 0x07b3ee0ed5d77466e7d42dd99b8b5571ee93e2b33ec4b629e0a5016fc6ebfdd3. 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/07392197-69e5-4172-b7d9-4c385a949a5a.json and https://artists.proofprofile.net/proofs/artist/07392197-69e5-4172-b7d9-4c385a949a5a.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 0x5577b4aac314162c550c609e3081ad46d741fb84061e24a4cf3c668708033f71. 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/QZW9K2363771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8df5c281e93176387900b5b5ab32449038b5e299c825ebf688319003df02dfc. 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/QZNJX2343730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13ae5111f2b9218a33841ab6b115ef4d88417ecca59e26ca32dbb445c057d35. 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/QMEZE1829767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9ec3a180a482808fd3e7e6b10529449cef0ef0d721ca59284272a70856d009. 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/UK43Q1805665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890dc05bb20e6f3fdf59bfa8a9dcee7410f4b6f068398be2669ebd95b021d7b0. 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/UK43Q1806289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7372508abac0c3dcadc104e1d0547557710fa0dbe4bdc868193bf86571d24e. 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/QZNJW2089214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a523ea97fcafc1de115e5d80b31e9635d5a8404b6ae5badc6c5b3718c1c8b2. 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/QZNJW2089215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba5e5cc5a5e4ebc86da218ba7c4ab81c1165ae48706da4ef67c86c057a60eca. 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/QZNJW2089216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486ed0e50749b9bb39de6c20f48d04cd21aa040d84db5f3520ae3aa359252b63. 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/QZNJX2040033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d41ae6c3e6c6ed713079b56cb5947be3c986d1e1a5f518e0a9189b2af46caa5. 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/QZNJX2040034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bae39e01e4c116e04fe339c86a1ee3d58f6da23a73150f5e204a1e67af3e36a. 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/QZNJX2040035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84ec6269306db8582cc5fdc04686a7d4984dd106e4c788e2aa4122d5b322a61. 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/QZNJX2040037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2febe49c4d27701a4f54e64ba4b7485d0d6f48936be9eb9e4d928d876acf3db1. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:07:17Z), 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/QZNJW2089213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e68e864b37cec4a94db1a85aa1995f9226116a1cd964a360e89100edd000125. 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/QZAPG1741396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dee4884afa1896a7aae92d0c3bcfe99f528249991c56bd06a870dc39f3dedd. 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/QZAPG1741397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8dc36eb8d768d7f93f6b01ae3f756b85a14254a47067fc7b2bcb45f31f02e4. 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/QZAPG1741398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3319ac037376c14ba6b77036c9f75f5afaf5b2e26eafd17da001c11c44966509. 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/QZAPG1741404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d713fae5e5bcc70666c62cf2fff1b03b5d10eaec13d7360266b64fe2cca68c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZA56E2420524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8e23da62f78dad956a3e279a6d0eb7d84c345c7a8f5314b4cd94a4de651c2c. 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/SE6XW2419913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8206c9a8d617d8d83d81c02e5aaaaf84014d10cbe639c11efb60f45967191486. 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/QZHZ52298744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3f30249715930520a1effee3f86b98d51f532739c1d698928acba1ccee1825. 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/QZMZ92176312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f90662c003be498fa6585eb0416abcb2f392584460d6e9404da3d0618a4e4e. 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/USUYG1208609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17db78ca0ced6d583c39cdbc575ffd0a9626a980def09bef922b8dd8164cdb17. 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/QMEZE1820572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6807f2358f89f9033f55d88968a5cffea23f16349d302f899855f60fd6154449. 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/QZ2GW1800143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b47bc33f59296f3f0f836d000a4531cfaafb33deb90666b0a9b253df34122b1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1191660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f257591a895865340c4257da64d64925549a4f96bbce290dcfc979818a447d4. 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/QZ2GW1600099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eee3eee996b297c0c6cf639cdf99f14d084be00bab71ad2484516e8ab97cb5e. 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/QM4DW1746789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d49b8e2caa5c6a020d7ac1680bb26ded0064712fc03d07c93255f22d183d574. 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/QM2PV1546906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2986bfdffc86faa2e488beb87d1fbd7c4b23bdc8772d80b1b03815b4bb85ee0. 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/QM4DW1557959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d5fd03ea63d868a9ec1206e33986702399855e8157969b01db7e55634f34f4. 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/ZA56E2100529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3e347d8f12700c9e4ab2f56b7d935aa9740d4aa575cdcd7c7a41506024e192. 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/ZA56E2100530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440e7811c3b53430a144de9f4d6dd921402d590df3ed818bae325ca48b5837cc. 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/ZA56E2100532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e01cd9f7fecc0270ac37f861898bf6ab497376e5e0d850b0a71ccf8b47bd23. 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/ZA56E2100533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1791dce7d43eb9c73cfdc2d8631ac2f1f6c9e97d931eabd48a1f26934b822. 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/ZA56E2100534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bc15c11a15725c8a0ef500df760bc7103fe305860532746833f19f6ff286dd. 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/ZA56E2100536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe010b1b452b8e00a93474fd0bb8069513e74847eef8b3d1e43df713f8e3e3db2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UK43Q2012235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e941b4976a5d1713c8faeb12097ea7d5ef2a7171b2504cea081dae9d787a18b. 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/ZA56E2250060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2399886ef09464cd8ad923c284eaf79286f76fa5a29a0e0706b7fa8f998a9c5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTVM2434688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0158c8c4d274d2e952a5cdc3cc32c9588c49fd232385de16f1181e8c934dbe. 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/QZHZ32079349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17db78ca0ced6d583c39cdbc575ffd0a9626a980def09bef922b8dd8164cdb17. 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/QMEZE1820572.