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 0xf7c2bfef26fbf586bc30d8176549a3620c9dc9c18c9b228831ebadbd6e6f59e7. 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/5421218c-40f6-435d-b61a-d025343465ff.json and https://artists.proofprofile.net/proofs/artist/5421218c-40f6-435d-b61a-d025343465ff.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 0x32505082531954c922c0a1a551febf1e390d874b80a405faaf7646ca424977a9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:45Z), 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/QM6DC1878732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c029e192fcf3333234a5cfcef058d34cc2fd97512720793a5fb06446951afc. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QM6DC1878734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd1f4b08839dfafd21f4ba5f82155655b3f0e2351d2727cfc45fba2a0255ead. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM6DC1878730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f432b92994635876a7be76c25a04d898f7670c79343af36d8a4e026b18d849. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:23:31Z), 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/QM6DC1878733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e8670b0f353992ce5485292c2f96c96e1a7795a03dc1344ba6c04402391807. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM6DC1878735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3c2fdb140d512aabfc6e73bb29138969dd955bae4d197141f1b1cf3e31fd51. 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/QM6DC1878738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9bd811436e70271b5f7fe3f98772ce34de44f8a89b0fd9f783d42266724bc2. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QM6DC1878744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c771550b2e6eba25371162651d60fdcac0a5ea0e3c1317fa0fa910979e97761. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6DC1878751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143823d9545eb2f1b569769fb285ece57a7312e0847b19692fdd9fcfef2dab5d. 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/QM6DC1878748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758caab77efa0051fb04b75d1f157c648e71642761c0e7b03fa7da8fe1a90753. 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/QM6DC1878749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0562b6db798d6329e6e1737c475153ada0e0913b916da7a7aefc17b87c99a979. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:39:04Z), 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/QM6DC1878750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08b407d16ba81705d812d4af46bf883fd17be2501373610d579fa6ce0bf160a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM6DC1878508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1de700dfaeba7a6113a96fb61ada4bba8ec78f3912c4c8e016ba7f6a20e66dd. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM6DC1878513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fbdfb81ae295b7b9dc84de29ec64e714ab74d74baae885f671dc26f19dceb5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6DC1878499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd5f0c9725190f2306113689c32b2b59527c237e7035e4435292f089b9caa59. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6DC1878503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bcaab49fac74fb6f07eeaee375546b473f831363886c1eac5ef35fba30ccff. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM6DC1878504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef6aa8cdfddb04fce17eedc23f520907919bff3649ada789e9dce7b9acae2df. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QM6DC1878506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc4bd7d9f1c7093d857fc6647a4036d6ab1bad4ad531289f9b28da1d7f4f170. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QM6DC1884752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bddf411474811619512d5d1ef902891a29e1123d9bac06b847640d88759bcd4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6DC1884753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50a76b4e37cee148e8ba4fbb53a65eb589c4ed388ee7d26c64d4a5e05ce0f48. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:15Z), 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/QM6DC1884756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885a1b944c026d22c88d0ed18f60062eef259510afe4f78662d21d6a6dfc6b77. 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/QM6DC1884758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50232fd146720e1e6d22be97491aa4889c8e6b66296757dd32827468cbf0f7d5. 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/QM6DC1884760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d07df2de62962c84c82bdf85ee0f13633fc4860fa3f714b56b176da8abb39b. 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/QM6DC1884763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc4bd7d9f1c7093d857fc6647a4036d6ab1bad4ad531289f9b28da1d7f4f170. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QM6DC1884752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bddf411474811619512d5d1ef902891a29e1123d9bac06b847640d88759bcd4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM6DC1884753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dd16d01b4ae1624eed20fa9cf4821ded12e7e7691fd4e84d442094ea64ac4c. 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/QM6DC1884754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50232fd146720e1e6d22be97491aa4889c8e6b66296757dd32827468cbf0f7d5. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QM6DC1884760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d07df2de62962c84c82bdf85ee0f13633fc4860fa3f714b56b176da8abb39b. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:25:59Z), 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/QM6DC1884763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4504395f6bc8abb0e4c1790b7ff899e5ba70458adc9cb5cedeb090ace49a7f04. 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/QM6DC1999570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24c5b18366efd2e44e437824d7049fb6fe10f53e615c437eeb15d4b865a1b3a. 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/QM6DC1999576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a937dd77e84091278df895fbb00d00aab74ebf476cf1ab91b3baef6de1394b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:27:11Z), 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/QM6DC1999569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a97d67c000af65faa865cb9a7817c9ad23dcd2478e3cbeee4a494bed343c9f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QM6DC1999574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcf49adac9b03820e5aadeaa13279bf6ae903615c2a0e840763c1fdf0983719. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QM6DC1999579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52f1d8740fc8d1df78c6ba822d85cc6c5f8bfd9e83fb1211dbad5998da4c63e. 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/QM6DC1901548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6739a9f8e9ac7a7d7c56870421d8aca9a3ef5c7ebf2d749a098283c2c9068b. 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/QM6DC1901691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f2586a70eef8a1c6986d6e9547a195d40e4d6c42292940c127056f27193c09. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QM6DC1908691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5f93c84b3c9033cc8ee543fa0660587a6cac06cf0d9ce2dec9fa963c4cd354. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QM6DC1908693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32381295dfdea99a382ee85cb4717c0cae074958dc2721c2be56b328f0dd3b5e. 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/QM6DC1908698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7285d7e45860dc717a4e33fc2d8a231296d803fc51973efc513c5abb508353a9. 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/QM6DC1908699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bd4daa39a51746593ad708316dc277d4a2d7b44b98dd776300787a3d15140d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QM6DC1908690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bbf7a16cef954b638b1870fbc8b1b1dd78368258b3282b6d63603d1a439fe2. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USL4Q2185905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be0bcd5148b229d10d7416ac72ab10ca852917023e953e037892abd8ce5fce6. 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/USX9P2463477.