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 0x59249a1901609c1f29bb3e37d66f3dbe9d7a0ff5ceb2c98ef087031444a33535. 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/292e4f29-28e5-4987-ab3a-6f2e944133f6.json and https://artists.proofprofile.net/proofs/artist/292e4f29-28e5-4987-ab3a-6f2e944133f6.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 0x65414879549b7004a4de63cfd0f9a8fcb75e7c990589ae977fcf760cdf55a437. 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/RUA1H2370022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5bf40088ab13d7fe30872e2596352229820b10fcd9fea5a9bb9bb96b87b4a7. 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/RUA1H2370026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500fdebd407fdcf104d4c95bac5862d74af3bf1d72a5db076290eaaff8c240cc. 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/AEA2M2382268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb10e66133a050c68c386daf9d9311eaae73bebaf19039b7078e8a67e672fb4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AEA2M2382269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f92e55100c0856c726e89b04be793587b1307a30df612438bcb5fec681cd0b5. 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/AEA2M2382270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b7ae54a489de5cfd594ff98e67851cba52e81abdeba677ca3efcce59ca4e85. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/AEA2M2382271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc60ea0f86656ad2895c59a080d7c55f4dde015619c41472c4c5567c302173b1. 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/AEA2M2382272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b6521519417bf2776b2be92da0a6ac2e3447ca29429599b965c2753d52e94e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:20:11Z), 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/AEA2M2382273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13778a1b6b377a3056bc6c156857c56b2db13ee4dcab7beeb899712b60526225. 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/AEA2M2382274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f7a7fc30cd2c7160062d87e74f9182b737de848406f24b9225a2eed4eebc44. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/AEA2M2382275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d3b36124496a0615c1ca9527122f0b1027a98285ddbec17d4320178fadffad. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/AEA2M2382276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3b822b0bf323817dd6bcb385828844ac0c324f556273145dc45f7d67a72100. 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/AEA2M2382278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9406edb0597af47df3c80d1507325f47f0030db9e8513cb1fe693515a7ca0aa2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AEA2M2382279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a490a7199d77683321d3377c5b3865f9c4c5d999bf089146ccb1f8925bc0e4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AEA2M2382280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d616a5736f1e6a936749c303fb3e331c7f73c4212b17e0dd613de99cc051973. 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/AEA2M2382281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52158f7baf52baff8fe3c7bf3159f008ac33bed642de519192dd8ba96a0b89d5. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:18:24Z), 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/AEA2M2382282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cecc38ee21bb8f13d794a0484d2ab2f720e2f635c015e9c169cd56194c3059. 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/AEA2M2382283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c1d17dede40b6f0179621a50e882f9b6c7a01433424178238a4b733e14863d. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:02Z), 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/AEA2M2382284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b19030ca0e29dcb06474ef90ab537fb2da4d648a2b3920f188865a8429018ea. 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/AEA2L2390613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafed91fcf4a525ce6a0340f054538ecef25b390816b0254212c4dcc130fe8e8c. 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/AEA0Q2314271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53b747ce7d7a5fb2fc0c3876ad85b61f9bbbd42bdf8724d66a407c3d6543f56. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/AEA0Q2332455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297cfd20f0d367e6f262e2334bc707058ac648cb265fba801a4dd5e04d0f4246. 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/DGA052491542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8338f38bfeb1409a89666b62ecfae248993e16f904d73c5653c4f38fbcb76ada. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DGA052491544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377cbdde207c4b0eb48fa036b963799b15c5039bc5ba0dea53ca96f439ed956d. 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/DGA052491545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccf75aebf301bfa384a1d5f13103647527a8828daa2b8e94698940710e01f9e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:46Z), 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/DGA052491546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc902736f346302ba5c45a04406abd5a0ac1a350b2869a8998c787c54e8c39319. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USL4Q2586488.