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 0x5347c3ba2b20da8eecca5e73fad3ea295d82e620ec8f814fc7867bc8297f428d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26a684d3-d527-4276-a4af-e301a7c28b82.json and https://artists.proofprofile.net/proofs/artist/26a684d3-d527-4276-a4af-e301a7c28b82.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 0x0edccab320868e4ece0996f44baa096533ec00037f3273a13a779d43aae047b9. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAEF1900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a494b29baab6081c504246d74120f05a22150ed6800f949dc62975a574350a0. 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/TCAEF1900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb53b2fc8f4f4fe33608c9655803a4676162c600eb2253d417101e3eeabf6434. 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/TCAEF1900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95539741a4ff8dc82a9531560709f227dea59c5be0bf4dd33d1068bf400af2b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAEF1900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b612dc0ba45d375311e3b866d8a02dd509d6600260fc5ebe16ba580e8a2120c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:47:02Z), 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/TCAEF1900211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00e841f5498d69cde1d1675fe746773ef39d679ab1f68d28ce1dc4fdc5d12e3. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/TCAEF1900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef3633eae5e63ffe084d545291842f719eb3ac43c2308e3b69dd28937672958. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAEF1900213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347dacdfd908839f76fd90db3fc23e78930740064b32cad365275cd5356daefc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN52002309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5fd28d43bb7a06262f06dfe56f8644e6893d68067e670651157099f54dc193. 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/QZHN52002311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c08a81152f605b3f3528dc8dc73ecfbe67f3e247260fb48f218c05e1cdeff5. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/QZHN52002313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5958a3b41dc90da62b110fab5cc2d090b6b1c7af234ca7e1c1e9e6f47a51c8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHN52002314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d849d0b738edf41b576ecf5dc29199483c6cd374473eaf864fcb4d7ef64dfa. 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/QZHN52002315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ef734d2b44309ce545fc1ad3f848a2911c1242d28aec1b549809d69fed2efe. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN52002317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b32c0d28f45687e9c26e512d5d23e44e0bcd13b87fd369eda2cc6d6067895c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:21:58Z), 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/QZHN52002318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9fe56bc7fd20f920efcf89e9d435bfea978ab9fbb0b771f2fc490380f62761. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAFM2186266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da06f48a8658ed493820bfe81821b705fa9cacaf3199a9189e4d0cc7df2477f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAFM2186293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea3e77f2205870790e9dbc8a31edb0916e07f93b37f58a621cef96a3591e984. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAFM2186312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9c9621753ecb4ae110e3a819ee582001ecae200a030af4e2195538fc032a0a. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:28:28Z), 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/TCAFY2171383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1f19ff2eb7c9a705b7b21c0f37808cdc1d21798fd3a51bc7a7e5a6f3f6d423. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAFY2171386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98123b82719f537c7c65052468f2436eb2eb727f04b4ba2501c131bf095ebc64. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:39Z), 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/TCAFY2171389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab6c607cffa41e69dcddf7f7e8b5fba2a22e6ea1b69f8a4b94edad98327d323. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAFY2171390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfea08f11e6f9d3cd90f86851aca1746fe8840c5fca989a4d0f1425aacd9faf1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAGR2207005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb228e5bfd77a609a2615a8e805148657b74f39f5e9e14ba41b6e561114ede47. 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/TCAGR2207006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1e54a9daa10a4193b3ff8d82ecb23f97f722016b023b54250d20923204cbab. 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/TCAGR2207009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a99bcb9ee2fba3bc4306a7f27d44381360b6f72678ba53b3ebf144f267229be. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAGR2207017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3038ab131f973eff1fc2d93a8708cddd9d3e53e1befc8a784e98cf74490e8f72. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAGR2207023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6db739489832d2ad6f5f157f937fdf9858d7bacfa61e94f0fbf4e44c62d66e8. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:06:20Z), 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/TCAGR2207028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb92d5c63ff7a35f9e15927e903b3113545d7a3970a701ea8e8216b757ab7e05. 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/QZWFG2395141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51b4712d181d8dd97dcc8ec0a15fccc96f1e144d3261c7e86bc70855385d46c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFG2395142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb941e4ecd6cdfe35893ffbd91a20dce86e8b16843dbeb30080f6bff31e44a5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:37:19Z), 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/QZWFG2395144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfe92b13855d2790efa5bea195118e5d8e4d745f4ee18986bad058f5936cec6. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZWFG2395146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19335406f34e27a4db9d69eb601045f2a4a8570f4a6c7bda78f0b194146fe5fb. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:02:23Z), 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/QZWFG2395147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16749c3b3b41035aa4af19417537f7ba231b50fb75021428eac4083a2c6a2202. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZWFG2395148.