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 0x44c25b8a837810a20e698bae2629f3a4cdb5d2ec75418d1f1cc50cdb41e20b16. 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/3d66caee-d089-4a56-8625-3c4c67218f97.json and https://artists.proofprofile.net/proofs/artist/3d66caee-d089-4a56-8625-3c4c67218f97.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 0x270540a75ad84b793369a0577abea600368e98d335badb8e5ec05bdb7aa20244. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:35:37Z), 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/QM42K1786018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0349bc22b269d580c76960aa89e62fa86c90f38f1952a17797ee57505cf61575. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QM42K1790408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a0e6f5fc57cf50c936e23e8933c5dec636e3d227732f478aa23a1517fee6e5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM42K1766136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270540a75ad84b793369a0577abea600368e98d335badb8e5ec05bdb7aa20244. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:49:14Z), 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/QM42K1786018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91219cf891dbeb2cfde9501507a2c1c8b7e0e530e3895a3278705990e714504. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM42K1760153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e36f2bf473ef022db843aa2a1a7aaae798a453dcf88c0c5b5fc6339458dac1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM42K1763337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0349bc22b269d580c76960aa89e62fa86c90f38f1952a17797ee57505cf61575. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QM42K1790408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f9ef40bc0ce1f7166d4b67865c06bf8a73757211bfa9951f0d7b4618a5ba6a. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:32Z), 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/QM42K1798165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3068883a49cb039059d08cb97c1693f992b73069299ffa3128749cc075542d4f. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QM42K1721944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a0e6f5fc57cf50c936e23e8933c5dec636e3d227732f478aa23a1517fee6e5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM42K1766136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d65d9995d0fc0ed2d736bd7217aea4927be7d453cd0449e26e7f75585155c6f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:33:51Z), 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/QM42K1751387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55b6f1151fa819effaa62f599670e1d6309ce829da5f5d93e13e9fd5239fdc9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM42K1772319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1536069e8d60ae63ba629a7270565deadc6f6afdc1bafc54398708f44dc2cb. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM42K1737916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da0ec9a5bff720c40b85fe68c3becbd235353c1db942656c34390d1104bd114. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM42K1793307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1536069e8d60ae63ba629a7270565deadc6f6afdc1bafc54398708f44dc2cb. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:05:35Z), 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/QM42K1737916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da0ec9a5bff720c40b85fe68c3becbd235353c1db942656c34390d1104bd114. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM42K1793307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffcd69bee0fa4f1441774f6ce80acc94fe3d259b91548fb557911b016139e5e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZBRF1811219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1715ec8f10bfe7fe3df4808917afed4f68be2732783ef0a976b817b8f7600281. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:21:42Z), 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/QZCE61877555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13ea8a1bb41fcb469177662277088e37bd36ccab73237ca28104bdb4e81edf6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZCE61877557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d9f28396efef0fb3e1da3019909cac7ac8b9bdc2b4b44b586aa3605864d33d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZDA61815529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4514be44ea2fb4a0f4c3f930988be15603b460feb03ed673fd485edc5a648bef. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZES51879654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498ab9f3173ee5ff0c3e4151b776443b15e194e866cc2584dc488ba86a6b99c1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES51879655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210000a524d8717fa4bffb809ea6a9120bc5d2e37ef79250097c513800bca989. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:20:52Z), 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/QZES51879656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db8787dbbb293ecf54557545b5b55085750ddb366621fdcf8b7f2a718542be3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDA41997287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696a31983ca7f56a89cd2c78f1d336c90605da910fef398d326b43ebad509431. 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/QZHN91909946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb87171e77c6520a7f6a35bc1823b299c3ff207281abfb04a191a1009bf243a3. 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/QZHN91909947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78755f9c4fb4e8a5fced003a0c8d8f6dcd3b128b1c2c6adc1077c3642390921d. 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/QZHN91909948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01c48aa85e1415f0513684e484dfe54b645a4bbe694ab2de56df3b0d76ee9ed. 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/QZHN91909949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556383fb8a8fdcb482bdb986e7412afb3eb888108b5d835de75d20e38675d88c. 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/QZHN91909950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc940edeb8ecc350619fa63590e0d08115e064c618c7f8ff8afc2f9f9604430. 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/USANG2024945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2ca99482761c753cea0f2557000f3f6419080a0c7ad23c63df74b06442cdaa. 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/USANG2024947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909a31a11b5e7333330afaa27f4c9be7b3d38f2dd605b638c1bd4085c3eef159. 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/USANG2024948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abb61ef1d3fb071c3fa028b9846fe9e27a49ddedfa9eb0c534df296d44d4c91. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM3DF2145326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a940aeca5880e4deda4cfb1c7ec9dad72175269cfb8c943a8bfe6c235fe40e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM3DF2145327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87383a7734b53f3791c7461d004a09b6d43cd2c073e0983f4c6c10e42fca4fa. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM3DF2145328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e49a46ca9a26a50f3a9ceaf9618cc2422d0b11ab029a07697e65a182f0f1f7. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QM3DF2145329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27ffb3b350c8a95a8eb2058daaca4384550d8ed2b5de6023f04c7c08f47a98e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QM3DF2145330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406b2a3fc0fdebb58e44d23525ee806a9ad6d6de206054057fae9a7ce40e7798. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM3DF2145332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaa8a41485564bc9f4c046f21c928e24281d29339fe72d80fa7f9b43aeb00ff. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USANG2255248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883ad34d3f259c01640d0e8a814726227f1c9ce5ef1e16d65aafc44dcffe3c7a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/US3DF2401581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8497121150884dddc4117990507c010ca0b36969de39cd2cb31709e9464074f3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:35:20Z), 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/USANG2477066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359543d0405e99ae4841d12bcde94ffa43388ce6fde6eac41e39b0cd7d4c7990. 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/GBLV62023507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6064a2d955dfcc05c89cf474c3dcc3bde640127cb5862587949d1b75ae1a9e8a. 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/QZH6S1900423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69740eb7596532aeeb3ea1dfb1fd2cd53b017a79637d407e7bd39134b1b8be56. 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/QZH6S1900316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf248fe7329d8d2043cfe09ef80fab6f2c9ff10068c476862cac651b58e2e3e. 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/QZH6S1900342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcbbfe477a268aedb5d6ac9dd3a4f1180f11debfc5435d993fb6008fd5dd8ee. 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/GBKQU2182851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec00840d9ecb5152f48dc8a768864ffdb40bac10aeaa2f1035b393ac5eb2c7ab. 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/GBLV62119350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43482c26a4fe0c882f344890e9b59e4a96e58009c8054a66868f26117c24d524. 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/TCAEU2087152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d9aceeffd280acea52a119667164e4fcd5d31a75fde48bd1a9875213b1bb25. 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/GBKQU1978822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aebbd388a4e10062919efc0c968b3c83798cd9730c6633472b1d5073baadc93. 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/QZBRF1862240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e32db42155a2d78b9642dde0e0b4e74c4a1cd5d09162b68be5f2d5c01714c0. 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/QZFYX1993910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebce7c3903a31c55651419438334ceb5cf65a09e7273ee87f481a4c1e652bb5f. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/FR9Z62100599.
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 0xd6b8456750a289afe31885b4cedb516325cc110d0c779df1343cd54d6a74134c. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/QZES92067819.