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 0x5f34b0c5dd4d5b6bc08d5d86ab924873522a6d0664d7d29462ca6dad0238a531. 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/0300351a-6651-4f86-a4f4-b59beff805e5.json and https://artists.proofprofile.net/proofs/artist/0300351a-6651-4f86-a4f4-b59beff805e5.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 0x67e4a60f67b8b22e0583501191ea7748d065c0073766d598a3b1c85e159cb5a3. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/TCJPA2432252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee504501cc3bbf56e2ecdf273a46f3a9bab0ef01511245aa121b07d6cd2ad35. 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/JP92U2400650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c952591206abc97f0580ed84eb644895f232b2708f6800b9d44466c687ddb4d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JP92U2400651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e159cc4f588462a706ca62346aca5b91f67f9427cc787a1713873d23e8ea9b7. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/JP92U2400652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb3ea098026d5859308b4700450eb39686ff44035f4c489e6e2e41458dab848. 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/JP92U2400653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268e581b2967d1b25edecd32b66e6d0bd8d24302c02fe3e91706331092b98d7a. 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/TCJPB2476027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef242ce4fb80e577501d229996fb221f425debcc473fb00990231dd71e23bde9. 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/TCJPB2476030.
Mela! (feat. KASANE TETO) [Cover] [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817987c8015d4e1c5c8350ab7b304b149936f44de04e03d3e5df7cb90693c1f7. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/JPS532400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42dcbdadc3e91199b1f5d57e1b952305c43ee4cd4548be38c96a2bad4c1c94c. 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/JP92U2400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa00b976e1a8cc1b4cc76a2fe874dd891a86f4f1b75f367b80b6b6111aea13d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPA652308958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29aa762d560adbef31585e21dceee36fb6ea1e0860060da6975dea0b51186120. 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/JPA652307127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89894743c2ae60edd992a203e845aa3c11ad087697047d2437478427b5438488. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/JPA652306541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf0ad672aac4a7131ccd75c583b163cfdd676321b3a33b68bba567f8123af1e. 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/JPA652306453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923ce62a8e8e6b7de9b39bef0fec113876199ee395ead3c62db0a8f75be20e3f. 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/JPA652306320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585b9a18d8a2975688949820c6d466a8f30ac70ee395455eb5eee705a01a9e84. 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/JPA652306540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c95e1a3a0950a6d67d5db2d5f4a31cccd0f00100ea6f2e2f8bf789ec0fbe292. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/JPA652206209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6c7ce1ce3274ea2798d1adbc801e24f665d11bd88beadb9016c2794bc88c60. 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/JPA652206064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e8ae3b56012b10d3a9818b21349c0050c0bd942ca5c12c6c6365fdc4d26f30. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPA652205928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26f55bed2a0a1be3ed83318cadd1812da13bfadf23e5bf0faa93fe36518f163. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JP92N2418252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c5585b06059bfd8d9d51a49b0b8cbee991caf97e9ad1a1ef048781b0aefc44. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/JP92N2418253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860f7d410c248696cb22fb12e6155f5682da21ee17a5038cddcebeb691948de1. 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/JP92N2418113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5253bc00b15776ae61a8e815b20a54c6acb92e1209be75f1934d4130cb4e78b. 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/JP92N2418115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51e931d3c5096f05f8ee654d48c385d361ac8d218d843c0b228531c6c319518. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/JP92N2421032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58bf1dd48a1046f77d9cb74b9264feb5b1b66cd1e65a6714298ee231aee8ae3. 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/JP92N2421033.