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 0xe60a64c35b062483a610401543ff1f09710d86e6d4e598767a455e00edf0e020. 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/6d65fd80-c2ad-4ba7-b00d-7faddd98da8d.json and https://artists.proofprofile.net/proofs/artist/6d65fd80-c2ad-4ba7-b00d-7faddd98da8d.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 0xba101476b6e1038554da1185b92bc3f0f38d2fbd5b0971e364fccba6d183c275. 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/QZMEP2387124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722804edf85dfcd75e177ce646ba366130d15ce83be3292f6e4798cc15794230. 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/UKXN22432670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d38290c219b79d330f10c2d6cfcc55f55d62463614284f76a1dda0f1b7fce8d. 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/QZNWR2360292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed992bb9c1bd5e1f933ae7842d317139a457bcdfd70038bf8f7de10c8efce7b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWR2360293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701d0ac9e7f3d83988d520232353fc1b3bd95085341f8388061fd93fe6405d2a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWR2360296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba101476b6e1038554da1185b92bc3f0f38d2fbd5b0971e364fccba6d183c275. 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/QZMEP2387124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10aa37d100070bac55b439351d2d75bc77018b77368c6ee3f93014e417bf3330. 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/QZNWR2360297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a5f333bc2fd624d2835e04b796efbea2155fc3773db4ff1563d5e2e263212c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWR2360298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819ce74285486a8a03eaa8b2cbb5fcd5f087362d0043a1cac15d1177bb21b425. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6L2097471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3416c1c2d332097665943f2416b3acbd889192475c768b1f401ab3cc8020874f. 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/QZK6L2097475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b5a2ab542469322371e128142f4edb5abaeb8a1e2901a5ed9e73ca61bfc83f. 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/QZFZ42452674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe854fe8d81dfa82be15358fc96ed850c77104e8e2dc747c7320ebdae2008cc06. 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/BK4DA2323999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39eaac67d39304c73b2dee9e5788911bf2de7ab35983907b93ed2ade8d00690f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6J2337543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10d14efd1aa28a5910fce813a74af70a7e6db6afdfc852d858ba56a8eb2a480. 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/QZFZ42350998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf842ca37df631becb29de134254c3c044c231852f556cf0de5f8fbf5f3700d33. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZTAZ2242080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97f21d3a8b6a81e51e6aea48401e87a79d0493bd2048cd26e52a377f1e16cb7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWU2266602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e208b2dd9e0f5373aaae8e986aed3d432754093ea8806b46bd4ed23ac92b05f. 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/QZK6N2263847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617d557905ee561031e1df779a03b3a80d8ea87cff5bb248e79ca38e4ef026db. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN72291838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972faffce73b7e1fa0f8718673efd6c1c0a03984af8bce70d5be61cc0e3b657a. 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/QZES62218980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0780ecaf7c183fba9573aa18cff8736eaf9fe85d77c07dafb6a2dc3e3681b920. 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/QZDA72251435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f276cd22b7a4339a28952158b6e1c1f514e07a9e4f28cecd4434e248a9e068. 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/QZTAT2146053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349eccd13f2b01d3863215ade2b38d37ab543b92c1d381ae48a98953c8fba6b7. 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/QZNWQ2149888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed13780da4887b9c7c0defeedea1ddfab810f81d46337e6aab365c68954005ed. 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/QZNWQ2149889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503007f34cb9e0c3708642bf473616af1a79c3af82e299d24baffc581fe238d1. 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/QZK6G2141218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe935a7def667f4797d5a582fd328f5ad2ca0c0ca1d0b9cc82d9763cddd114101. 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/QZK6G2141219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceee25fdd0b4fe8f913c959f247c624a0ed213839597b34b69abb1d1e28bad1. 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/QZES82131820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610550c23decafe7df0bdc6ef547873f82cab375ace7091cc7b74bcc4a3c0ebf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA62160838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda311421cb6f0ef9e72d897e33ce27c7d1ce9c08599e8b90f8fdea924d1eb52. 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/QZNWX2032855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd189a6d9f8f76a9bd7e9cb21f613a344bec642127d0a6c69beb0bf8020ab0442. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZDA61970507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f7ec23fef746bc908ef6d9d1088d05131658b00491176310d1c62e39b4ac76. 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/QZDA61928723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e3a7937fb35645b9d40b5a2c8d21be8d060601146a27256ce8c5514c519ab8. 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/FRX202150552.