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 0x0bce5372ebc142a1937cee7d9ef93cce988cdfae31e0cf3f35e989566c38d298. 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/577b8942-09a9-4794-a2ab-1f248fcca382.json and https://artists.proofprofile.net/proofs/artist/577b8942-09a9-4794-a2ab-1f248fcca382.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 0x0eaf3da1f1f981ced3aff37decbfd3310e6e001c38ec490e784fc6f6a95d405e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USHM20698912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13436fb8b0957fa63fad0b34f8fcc86f62d00b5693abba50f87a435fa00d5e8a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM20698915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b6f5761907fdcb24ce755d1170e183f8403893e13048809be2588f14121182. 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/USHM20698917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1c5daacad2b08adc1fb1f0b10b36a655e2856bac647c5aa54cef5bd8005b6c. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:13:20Z), 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/USHM20698920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13bf1652e321bf2d7f8414092acc83f70313ac60bdbb62fa531dd06804750c8. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USHM20698923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a4132d0777ccdd5c3221beeb6d8c017eccc80ff08dbf13bb90ec2dbd8f645c. 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/USCGJ0836004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cf3025f36122d663a3efc5be5eb16484b59d0c2ac8ae52aaeb65b31822fa45. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USCGJ0836005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c174d3a2737fd2b82ffff82d6a25acec2948fd91bd5da770bd10da22e7f03f0. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:42Z), 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/USCGJ0836010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c30ec44b231237799d715f088555221b77f5ae6f1b4f593cca2487b9137d16. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:54:48Z), 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/USCGJ0836011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183d14f5b9ae38110bafaf0f4bb4942c3c1855c3c7a361035753d0df647261ac. 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/USCGJ0836013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084ab672cef0c61a656f9815340109b3913ce52537aeb302f1a164bdcfb6473d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USCGJ0836014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866d4a76d352fc80124b186c8dbea0a08b6378cbe3d10187cf03b4a7cb2a0695. 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/USCGJ0836015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa00c1ce459e461c8ec36b9672877847def7aa75e20c769177613b0394335a2b. 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/USCGH1039695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6fc304d18b5a9ff594e8df4ab2918ef6a6f7367052f307428eeeb6e756ebab. 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/USCGH1039696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7219ac68fbc873086101071673d9e895ec89ec8e09953ae5fcc78318198841b3. 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/USCGH1039697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8060c596b3ac8d06277efd4886c020e3b44fb7d75aa0014286f9ad0f387a9e5. 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/USCGH1039698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e221dd63f823f1e179c3c2c27c2a98c7077356e1bdeaff6c409af7ab0570a1e. 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/USCGH1039699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64e9b2bdfc7cb1b0cd29e6a24eb0c43bb64fd24f225fc350e4656edcda46976. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:50:06Z), 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/USCGH1039700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf608cc914360ebb62323bd8446dc4370fdc3c50afb3f819a414a01af855ba3df. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:25:13Z), 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/USCGH1039707.