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 0xd37b78b3081ed228e180157667fe8b14d0929fa9cdceabb9ed31118996affd7f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4966c138-2a34-45c2-a59c-bdc37a2c630e.json and https://artists.proofprofile.net/proofs/artist/4966c138-2a34-45c2-a59c-bdc37a2c630e.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 0x35def723cb0e54cd4e49b6cad607cecba6108d31df05951d1431d73259264a19. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:32:00Z), 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/US5NR1295401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee0d9c3c85e40bbb82a8579ff1e3da7da44d75b7f88cf22fcd7b517849e8f28. 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/US5NR1283202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5eb6fac66dce00aef9138c139ab52792700e82803db6050319accd449cd9a2. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/US5NR1300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619a326147adc944c7480a63262f04e5101f6e2718354041e40f07a3a79d28a7. 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/US5NR1411501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f1459f1690daa614b53096e521d8c57b8b2a301fbcafa307ca17c29679d712. 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/US5NR1411502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14cbf9ebd8ba346af2d99d9f7e307d19beb72ba69cd60534c1cd3478a040de3. 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/US5NR1411503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed24e681652f353c39a0d71577a2469c382314732b1735ee3f6b2ca6bd4e1f0. 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/US5NR1411504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb23eec7abad214bbba525e3b2b4b08f6d0fba8f98b82f50c482ea95d6be956c. 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/US5NR1411505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6556280ffc9e36558a4440280840a0a8e4c8204681790697616667ef12d41dba. 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/US5NR1411506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3f56649ebffce0278f9d462d806ae55e391695a7c46f921d406f0e58d5837f. 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/US5NR1411507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5125b3c98f6a25b5cc2c4b80822e82be20397b7e445c7cb96f9ac9fc9f4fff8. 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/US5NR1411508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b64e039be102dd1761bc4dfb0e053862ad2ba2c7771ece171668f104dd4221f. 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/US5NR1411509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f279262b3cf192864cf1d8248c32d379a7f03cbc40858bf7521443387af5ae. 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/US5NR1411510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4ea51bd386bea11fc5638e99e3d3033cdd32edafba3b123400082968b88335. 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/US5NR1614701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bcf294bb3bd55aad910d02458a88a09c76e232657ec8838221c57b440926ec. 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/US5NR1614702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df493f9bcae5f1e2211bfc57e980379ce90b6cbf5b75df877b53bc5b9efe63c. 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/US5NR1614704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aac3fe20ab5aef92e6647e14f8b6fec2d528f97a5584ceb04822aec03afb85. 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/US5NR1514401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979051f461063acf15fd9388cecd0329b3e16c000a8a3b66baec1164f441f139. 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/US5NR1614706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ce6872f42ca9c5b2638890ebb9b21d771be4a44e83de5c462ce7c541180f18. 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/US5NR1614707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780b55d911cd54fd90dd71b28fb639e858ba393345d8ab598e4189f762cd2a6a. 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/US5NR1922401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49435a0427ccf018524d5af9b62cc4b58de0c03d8eb50e5ad03fa2c6b9e79aa1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US5NR1922402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d88fcde2eb7aede470991fb40acc36d4b3c76826067a4523d6171432b1ce79b. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/US5NR1922403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6753aecb1c5e708e7409b3afba3f8b32e2160eb31570f158304ca5136b76d966. 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/US5NR1922404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12c300e790ab9b44727cb1fad9d287329996926de9021a2dcd2ff30ccfd2f12. 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/US5NR1922405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27136b507d2e79f71d9578c4f84898836b792327c06027fc09d1f58161978e36. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US5NR1922406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243d0e06c097cb631d68dc88876cb7d234ead87f9de4ffe9c5af4782be209288. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/US5NR1922407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867c2f3e2b855deb15c645abcd672a084fe2c5ee3728a1e2ca4ab4de24f6bc5d. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:21Z), 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/US5NR1922408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401f1815cb571d420bde16a1b0621ae11309b1b90ba05eeb14093e882eda2c14. 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/GBHLW1701107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1a0060622a0b6a83ba31ce941ac5f0eed163538939ee34162d665504aaf3c5. 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/GBHLW1701108.