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 0x9930ee3ed30c4a31f80f0a278dac06faaee74e660689fc63f0b04a1169ebd1f9. 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/695d729e-841a-4d3a-9629-284870e75fe1.json and https://artists.proofprofile.net/proofs/artist/695d729e-841a-4d3a-9629-284870e75fe1.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 0x2b1486e725509fb49998cc8e387a919ab68c61d9aaa37bfa6e1b63a9f8536a15. 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/NLRD52257918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb5907685116a45e2c21d329aca4f4c53cba2238376f044b2082acce6c33cf5. 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/NLRD52257920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6604dd886da023526d77808666a25a446be2412e2ec51d9abae24769bc442411. 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/NLRD52257868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395c78d79256bfa7db28fe73e916a123d39289126cd498a745e0acc00facaa8b. 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/NLRD52257904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3cf72518282539cced2482bf268d591de110497f5656876f462ecd1acfafcd. 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/NLRD52257931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dabc130e4b53694af77798197a546f5bfd067859ac86a49949838280306839. 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/NLRD52257932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6292f541c3f1692f67cb7333d4b8291b8d538b142a6b6f4bb5eb5720cab30043. 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/NLRD52257933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad06be98ba22d43057e1baa61a526b3046ea9d3841adfff18197ff8077eb2ac. 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/NLRD52257967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb5907685116a45e2c21d329aca4f4c53cba2238376f044b2082acce6c33cf5. 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/NLRD52257920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1486e725509fb49998cc8e387a919ab68c61d9aaa37bfa6e1b63a9f8536a15. 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/NLRD52257918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395c78d79256bfa7db28fe73e916a123d39289126cd498a745e0acc00facaa8b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLRD52257904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395c78d79256bfa7db28fe73e916a123d39289126cd498a745e0acc00facaa8b. 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/NLRD52257904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6604dd886da023526d77808666a25a446be2412e2ec51d9abae24769bc442411. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/NLRD52257868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1f1535c35939225dc3f01a055e5f5c96e6f8d56d0162785711fce07fc07bad. 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/CA5KR2304779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c9b5161119abcb5eb87f2ddbe0a2b117e8dbc590641076bcf24a48992008eb. 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/GBEWA2202190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefdfcd480fc05065804b7fa59c6afcc5d4fb8f64f1e567e81bfb73aa2a366fa. 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/USA2P2209341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd861f4ffb70d061292a4756e28e4f39f86bbffefeb18fb0b8175cb7e0ac0ceea. 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/USA2P2134807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaebb4274383a0a0f0e9eb2604bdd03f7c6d372df61d5c15f34090a0c000016. 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/TCAFM2125066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31efffdaf12cb51c62e5b85910e287d83a69e0e86e669d0fd15d416649e39a8. 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/QZHCR2000180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fa69574d834c7032a270c02005a726018d221631fa804cdbbba2e02dd63ac5. 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/GBLV62001758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ca3b279591f2e64813e0bc49bda7f812a22f19fcaa8be36c4380a5b7f4f305. 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/GBLV62001753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9baf0a8407e77af1f65f326f44c39828b8c3e4482a590a0eca2ad9288909ec6. 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/GBKQU1991945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e5dbe2c43925ef3b68d13296aef60bf610d36b608ac1473a38dbf3cb776d3a. 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/GBKQU1897294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7932ca1f557f13f2563e24961bf0308ae09b6af32fa65a8719d110407270f37d. 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/UK4ZF1800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccb0e6142698b503cf30dd5bbf17ad136165d881594bc14e1a6a9dc6d4c6893. 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/QZBRF1898476.