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 0x22cdf0be26666d7f4b5bc10030966de52d199a105591ce4a423c5448faea50f1. 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/fb8bae8d-ad6a-41f8-824e-854b205f0a01.json and https://artists.proofprofile.net/proofs/artist/fb8bae8d-ad6a-41f8-824e-854b205f0a01.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 0x9ffb840c2e38fe4fdfdc6a6034e85ff5ba9fe65c1345ad7b01c407ad5d05cf8e. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:55:59Z), 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/PLC062114672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a92e6237806e4e3f4b43ecaafaaf757c6b914f4fe9f4788ecf210da442cce6a. 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/PLS282100118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b69d3d8667885f75d359a0bb5251e399aca24cc3915d7a804fd866c1675bfd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PLS282300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a21703d41b1254ee37d635e16db1579e4f2f98bf472979b6bac1d641463cbc. 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/PLS282200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f2d434c7defea5e40371df7cfd2956f14bddf204104c5dbc6e9a6f1ad368b5. 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/PLS282300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe04af88d702065db13219c7a36aafcc44fa0ee183199c26cdf49ed51125e7b8. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/PLS282300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1be2f5e01cfb73be8ce74e14f176546c0f8f18901086063e759fe04b174b3bd. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/PLS282300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbfc3a881690874c69228a8bb6639015b8b343709fa8794d538c4889bba8c1f. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/PLS282300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826f950df35579b4b3fb9011c699d91a8f5880741f3ffd18743a1ba0c25e0e64. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/PLS282300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5993bf61e4bffb7072978e81994c11e137839693e1fb0be7483f0eb6e8cfcd5d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/PLS282300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166c697815ce1e217162c043ca08511ec63ebd4327128e4a1f6820872ab32176. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/PLS282300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5286a40b181878b71716f9d4481823474799eeb8ae1229362c775e2d717b6e38. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:43:38Z), 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/PLS282300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa38023e39cff5685c382568141fe8107b2d0d4a5cc74a5feeb2c8b467b3d131. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/PLS282300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa4c881c74f486158fed030b6d47f7d8d83e467b1827fb369329e86baa2b8e4. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/PLC062405304.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fab36c72330b71bda7909c06d55dd9d8c9e02b9c4467a296ca3818b58b48bab. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PLC062434675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb15ae8a8007f900704696d94229d60e20e4f9e4bb2a14ae8c0258c5068292cf. 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/PLC062435561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1197ef27f12beea4394899ea395de7c251c9b7e393b223abe59fd09675b659. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/PLC062411424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd818e17cf60c10bd95c96aace9ac11ed2b80cfffda56bc3ff2048e333de0eedc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:21:15Z), 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/PLC062442549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe220ccf2c0ad5b551e75811d8b81cb2210401cd232eddf42159bc7aad903c552. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:41Z), 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/PLC062405591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1fd888b3fb2f3a918baf46f97be3e17c888c0a7c3a7eefbb5f10974cd699d4. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:43:37Z), 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/PLC062442548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe582d2b5fcb1b701b95d3971be2647b87a317b0b3d7349d5de8cf9bd24040ca6. 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/PLC062442129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281bb70659d4fb3d768a590bbd0fc99583d5c5a8b5a84f8981c5fc2eb3729a98. 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/PLC062442126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5fe0cca4cbbe423f340016cb6755da77a2deab8b6fc708dc189b992f3fe255. 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/PLC062442134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbe5420874b2c1f8ff04a335c297a9610a1bc18ae3c2b18a3d625e1a999ceb9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/PLC062517290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ee5fc5fc460bbd085a4e1a9b77d88301e12442c8c71b742a66528c72d8aa60. 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/PLS282200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581c39df182837a860068f8c46daf18f26ac879973603d05085fb6491e1024e9. 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/PLS282200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc149c82641729fab8119cd128e212036a0b95352d84dfcb25f27e76dc866aa. 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/PLS282200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88190b4b6a6e4c6b11122f35e352d8e97c1a69c200eda95febd6c4f08175e5e1. 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/PLS282200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ee5fc5fc460bbd085a4e1a9b77d88301e12442c8c71b742a66528c72d8aa60. 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/PLS282200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581c39df182837a860068f8c46daf18f26ac879973603d05085fb6491e1024e9. 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/PLS282200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88190b4b6a6e4c6b11122f35e352d8e97c1a69c200eda95febd6c4f08175e5e1. 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/PLS282200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc149c82641729fab8119cd128e212036a0b95352d84dfcb25f27e76dc866aa. 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/PLS282200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ee5fc5fc460bbd085a4e1a9b77d88301e12442c8c71b742a66528c72d8aa60. 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/PLS282200006.