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 0x14140756bcc9c8ee3015281ed1d6fda1ad1f2cee33088525ccc34825448fda85. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07e3649a-91ed-45f9-8883-0630bd7a1635.json and https://artists.proofprofile.net/proofs/artist/07e3649a-91ed-45f9-8883-0630bd7a1635.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 0xc742d33f77b976bc0cff0a1935a19cfabad35b8a82a6b497c1e9bafd3732d733. 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/DGA052450982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2dd693850a3131f1c660a05bff307a8223b6fd157ddb1188c1567bc62908ca. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DGA052450978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b0447cc2534af098b6b8ee2307d8da984a5e7317cba7b2de601346bd4419ef. 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/NLCK42226375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd45e898b43b04313bd428d10a29b2196baad387be6ecdc877678b63258e699. 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/NLCK42408320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472472c2b3b0a779dff0660836331f4abf7820dcad38d8d927d2dd1a5d10ac41. 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/NLCK42408321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44925681cf3bfab22cfd4f4e91cf97d11e79c6a8f09e9f77620288a74e7a6a7e. 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/NLCK42408322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42056986afc39a655e479266ed3c8b369faf578183955dea780a4d72c13de45. 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/NLCK42408323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ee62bdde05c1d5f645a7163291711144c5cd6d98d9a23a4aa8da5add454ceb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLCK42408324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6297e33c377f29107b4790178a16f93ff33c75397027f596577f076e51f6de34. 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/NLCK42408325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46866f03d6b19d031ae2e31f9322dc69bcc3e730d95572a2f9d0ee22f6da2a4. 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/NLCK42408326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7796304f9426edf7b7f519561ca17a984a15efe45fac6de93a08413db755f0b. 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/NLCK42408329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6179a810a279d25e3d837c38c693a6ecfdf91315325b0cc0285ff880eb78301. 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/NLCK42408330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed32b558adc20b08986372fbe076137f906c4ac0f9cc8445a894af3e79acb73. 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/NLCK42408331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903594a004e21dd28991040fe191faa8abfa952dd4ecd94bfa095a191ff3b841. 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/NLCK42408333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb414f8de7ee2fc7bb1db684617847e80dc7a3c428a2ce535b02baed4f80f3543. 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/NLCK42228707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a52cdee3770644a695aeb7c1e49e0fa9aa33c9df41cae3f8c76851d9d3e2c4. 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/NLCK42228709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d262da63e64659dbcc508c51116c527cb19558d4b7e1874f0a477c7cb83365f. 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/NLCK42228713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f21017f73f7daff8212a778620ace4bcbdd946e6af7824ac70f169dd105bddb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK42228714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164ee7b0d69158bbee08675a5b17113594160365e7b724d4514839bf03967fbb. 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/NLCK42228715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afce254a670954797c3f550eaf6bc698871a123780ce9da31375f3844b7934b. 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/NLCK42228718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3404d32d757ae4fb0a0db2e82da4602ad39765005de13a12cb72864760dc979. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK42228720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017759937d819bdbf7abc4a3a13dc8183909783b57ab52840d0228cc0c0eaf0a. 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/QZFP52431453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4d9c92074f26c05c8ebbc99a4fced44b7da29c723c7edf9b160ef050777a0c. 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/QZFP52431452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22fdfee1c787bff1eb43b903fa9cc6d4ed01166098722429b61ba8033104f75. 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/NLCK42226379.