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 0x94e69eb08d17cd6a40c4cca63805c093ae67fcd6d095dd64f17351daa640dd5a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a82e1eef-3b05-4da4-a4d4-250c67559bcc.json and https://artists.proofprofile.net/proofs/artist/a82e1eef-3b05-4da4-a4d4-250c67559bcc.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 0xbbb2f78319ed6713a99e6b8aa17d88aa465f8dfc590923006c4c71c6275e4c83. 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/USCGH1040638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b0f398657a111cd5dd9ba1f54122f285b9edf954701bd2f444d0d7862e61d5. 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/USCGH1040640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6f3cd1b1c9ec377bf3d3b476281dba886d7639bd714b7afa00670ad993f6fa. 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/USCGH1040644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc032aa67f085728282b58c36729639c53c28a671e43497ebf74139c55da229. 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/USCGH1040645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a5247c0a826cded695df032f32365e50155839b78f96addf599fa2fd1c5840. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USCGH1040641.
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 0x5a64c2945caa5ada267c21a1416836d7da355b366b30f4a4527280db8586c860. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USCGH1040642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c33fa0bb5f80412f41b73f2bc602f8275d52a07a003702605f0324147e5f38. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USCGH1040643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6f3cb8a74c560dff7e36da350dde482d41bc5afbfe3184e472110eb13af80d. 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/AUXN22104721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64a96e3b2cf57b814c2ca026cb5db0694f3a7a1eb071ae0b8cc4cc8334031ca. 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/AUXN22104723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd8426d3c0e8331892cbab1766f72f6f0644e1c92c9d9adb05e84f483ae00c9. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/AUXN22104724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86aa53140304b836a16f3138582cdd6b9a56b2d28b9d9f32c91968d6ad365109. 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/AUXN22104725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eb3cbde4f200d383152e373cae341eb2dd47e3ec8041559fa6252f5ad0807f. 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/AUXN22104726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54c2e974cc7cf2247486fc346eb2b652aafeb185be2d382e6158dc7e9bd3d85. 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/AUXN22104728.
Tanbou Toujou Lou: Meringue, Kompa Kreyol, Vodou Jazz & Electric Folklore from Haiti 1960 - 1981
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafae3906828acad7c1cf2d9b061408e38a4c860ed0aed6a3a1b19d4285f8b8ef. 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/QZ4GJ1600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdf0ec20aa8d068632678622a8300ff5c15713526625581d3bcef3e7c5716bc. 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/QZ4GJ1600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd42393302dccdc3c4f3e5e725a7121d0b75e830b9e3b83717a33c1f359b90c4. 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/QZ4GJ1600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3671f6d64cfa03554fd9e76b1248b7ac191181c56a2a9abbc49af9ce6c86c6. 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/QZ4GJ1600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2921fe3afca8714c87dfbfa7417cd08828f4b6207373caae0a260f08dd78f782. 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/QZ4GJ1600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763b36f03fddbac9ae68332f50e8328db1b5393f3aa928cf56d7882c57da7db0. 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/QZ4GJ1600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce5b3c6ad4e8e73f2b76e7a66654f3266c88038570db0d6d3ec5eb3a4bbe008. 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/QZ4GJ1600111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540eb516df37f6cef96d8101ec859e417353be14250e8fc45016ff0db16b09b6. 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/QZ4GJ1600113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ff909b7b67b2f0556503dcd9b3c41978ef7da384ad48fdeed0db261aeefe90. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/QZ4GJ1600117.