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 0x031515fe8e4cc4980a54b678f65660286f8924472b4c595b4f4c3701fc36dc41. 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/d04c1b73-7e63-42a6-a8ca-699325b671ea.json and https://artists.proofprofile.net/proofs/artist/d04c1b73-7e63-42a6-a8ca-699325b671ea.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 0x06ad35846aaf06f6586647e303da7a59dad041e8260e01582ddf30c32af39822. 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/NLT2H2200983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cbaf09407472fccf13900d4b486c3514084ba97fdcab68b72cd9e0bef30e3f. 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/NLT2H2200981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd569082fc08e511648968bb753e14c92d4cfb2904d0903c24310e9479b6c35d9. 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/NLT2H2200982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec16bbfc7f91bb3d8ddbb993557686bd9d5ea0a7138294a719cac9f103fafc20. 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/NLM5S2402192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ef67fb314d6fdf749cfca70fe4176002895ba30c143210ecd3ff43c9707c4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLE802300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380a9cfafdc0ffc3d53a551d86accc3be1c42513a6c4a4da8c7d753762c5593a. 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/NLE802300307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc09a4e55e60b760692b6b3ac7029fda6c5a0dfe1b4b9460d9392ff329c00a0. 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/DEPI82406802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fd24de57e87a4d287dfd439102e0e130966edf1f5e2e320ac686060d1294cf. 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/DEPI82304579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9932f2627f49f5c3e4e7338d29afe9f231367efcb404cadb230afd0757b544df. 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/FR10S2425295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c31082d5679212ca02ec18f775ef931674ffe274def56b37cb1f024ec46426c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLT2H2400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0918279889662c5a95a88bc7043cdeec97ec310ce279ee46c73d2af84cc411b3. 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/NLT2H2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf92e51f3a11f0d0198ef7645f804db30668fc328cec55d8f2a2a11ad19bfdf. 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/BEDV62200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42133e700c91ea09bca975a02177b036ab342ef97f27eef3b31dc7a9a454e720. 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/NLT2H2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6dcc0c999a4764bdd3e30d9a8274ed315e10d2d9ac2c740da7a1729d17141f. 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/NLQ8D2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff8d2ce19e82b3eb05ef8a9f8c1e0d986b3874a7d7839e4e4a84e91d80ba28f. 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/NLM5S2301923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37be1f2a74cbaa05c73b5183ae3b3386dd5d44e7b192d3c22903f41a007f236d. 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/ROGRA2300661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ccecdcb8bf01945de31101f9fa37c0b156978e57e6ab7aef6cdd7e6531cfa3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEPI82501471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fe872a929e77f2caa10226aee789fd27ba51651c15ac13c10858677727421a. 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/NLT2H2401522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682f86b3111a100ff9bbc59a9ca8220239b85884e7844e691c5fe27f7c5b212c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLT2H2401516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daedaaf77a31a7bc904a322602089c628e326cc90a3da3c0ec9ee192c425666. 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/BEN582400873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a09244b8d1818c316b38b7c31e9d694687c2c6493bf2ff486e3c060e105d72a. 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/BEN582400874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58201606fc1b8f9cd27b9d648df5132b9d8f39ede0ab55dbab8f4b4ca67ffc5. 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/NLQ8D2400984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d0c1434bddfd32d2d0f96754f00f50f0fccbe6d75eafa796a00e18603d3864. 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/NLT2H2401406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d039b70bc2834345addcff5115b2a74669ab2df53914278e4677a71c174763. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEPI82448897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cca9f7b311ed20502b856f05907726d8671fbcc0de922a21e96910d141bcd0. 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/NLT2H2401136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0fb05eb6aa2c09ffc58e1523b864d719d9afeaf8ec07dfe4787290cf819e61. 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/NLT2H2400998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a41bcb4a1726585acee003e5f7c9aa341cf64b63d51161c3dbf94c957ff14ab. 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/NLQ8D2400264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab743cfcce963b8b526e2168842e9d4aab6d498e791c0e0c4fa5549eba86eec. 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/QMFMG2304300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee96b9b3a731613f3ba6a35b151693b5a7868d9e4e9a815255d453dfcfa8834. 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/DEPI82325004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86198e5abe459aeb7e6c8ee6e744bd99c6af7dd964824a65cad3983aff36354c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTRX2355820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb49162cb1f4ef7960277700d3253e0fd9d760de65c90accab1e6a9c2a70e25. 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/QZTRX2354819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cfeb20c38b5b4e414bfcd5598f86870a38271d5b2d64863362a2b8219867fa. 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/NLZ542300761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b16236d8203e75635f911f3e868cbc64290784ec6a75ccedf9aca3d805e241b. 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/DES232300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98e4d8be64363de747b79724dd8d06b8f20cf8a46abcbc06e1f2d12271dbfbd. 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/DES232300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a49d6e0a23eac65409a97eae3cd4eda55e1f90f8436bc2bcd1f121592d8937a. 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/NLT2H2300249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefea7722a4752b04275c8d1694b35c240af5acd2f8e40eaa5da788b340adab06. 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/UKZGC2301166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c8edb59424e794294d2f8b93428323b34d8a3a74c84e94b6ebb0f73ff710c3. 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/DEPI82216618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5225f08d66004d5b01af847272806c1118fa990b4b9f086d41c079fca39c5bae. 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/DEPI82212916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc87f57cb63a036558b1072acaf3a7c197e142ea4351a969a10bec7630fe1ea. 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/NLZ541600187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf533cd7c0cfd9e8f995bcb045a1d98567494a1ab34a3e4ecb6893d6a8ca19d7c. 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/DEN061600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e91e365598c7d0be97e44471e21986c39756c8290672acadb3d3b7560342d9f. 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/ZZOPM2004192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb1eb150579530d897fd75c0b93847c7e5068c517280d4077e4030cbeadb0d9. 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/NLZ541700705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370f377f0e287b93e90da601cc6ddd7228e75d396d2baaacd1d6551401d1de04. 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/NLT2H2200417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47edb82e9e6e1cc22cea5faa04ac2c3698e6c41a3e021d6b80b4a8efe6e4041c. 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/UKW3Z2000254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef3705d85767a949b9a0d4ec07c9dbce68feff5e602acece5fb974f52acdc78. 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/QZMHL2294527.
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 0xf0c603f5840cb362b4aba3522b4676a0ae6f0872d9d7dd9152cc956948b4c722. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/NLZ541800647.