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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 0x624b16259c119f2319d5d362eb742bf9e2da69d583de50379ef2ea049f864138. 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/e408ac21-714f-479f-8c92-14350794e729.json and https://artists.proofprofile.net/proofs/artist/e408ac21-714f-479f-8c92-14350794e729.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 0xe45abdbea23c009c515e0422f0f29d83a60695457d5808d6a7f154310ff9d262. 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/IDA181301533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd330efc9b7a47d9cefbe18a67c91b89db3ca911d1f40b5fdd0757c9dfe9f2ac1. 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/IDA181301534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b159ecb96e21c1f756bd22f95fe606093894e9b8f7df025abcd349f36858e7e. 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/IDA181301535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad50363db106224b4ce278c9369c8573e29ee39e1e7b29be8cb549ea64d77bd. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:26:24Z), 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/IDA181301537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb95b54f3a3d005bc79738ffcc7d7323be2c20e47f0bf4eb62c5b33b76d4f0f. 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/IDA181301538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0126999f449a4fcd4519451c3680aeaa0deca00b930eb366ea390919d8571ab5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:46:26Z), 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/IDA181301539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c04895d552efb38849c125ce132dbf112a9d2793b83b400b24e65d5e45f74ce. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:33:03Z), 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/IDA182132350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4371f59f1db963e5606d3add03ae4c1367df97264c62213004e502ea11426e0b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IDA181301347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78142de2ce931eec7a594ed6ff5a9d1dbe8b5aa2229d155a13fedd91ec841fb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/IDA181301348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d58ccee470b26f780c37c9c9525075db2c21d014eed320efc38b8c210e02b9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IDA181301350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e38bfe3a5d5b0789cb55a13971ee1fcf07a79cd74247c1c5edb8ccfc717d6e7. 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/IDA181301351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b349f0f9d7a964e323267c898f58abaca3dc689d2a6ac2bbbb35b7a5c630fc7. 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/IDA181301352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70e9cea9b619d9c494fd4a7d2017ac0ceac48cfe237a0fd88050f9c3f029b00. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:06:08Z), 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/IDA181301633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815950ddc4518722e5a7da1ca2e92324c37ea55b30060e594c543d4d56f6f979. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:34:32Z), 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/IDA181301634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e54a1626f5bd15de1f5528206e8bd69a88855e12b0e12eb9866aca1cf814e35. 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/IDA181301636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0a087f8bd3cb5d46737436f072324643555443a4b6d38ec26d58a8095ed5a3. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/IDA181301637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997a004fc3ebd5d7c4d74941547aa998ce2e047944910514ca8bd2b33442b19a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IDA181301640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08df57c08b63fda50adea58e7da7eb7b903222db7773e0b4bbc4276d12be78a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IDA181100289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b289a21f0e912aba93e647a0725d6ba3770f7f856ce2a816f580e49e033a1d. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:05:57Z), 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/IDA181100311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdffe8c290e6d810b741a6c5d3988a2b72f0e1c6ba086c295b78436c25bae5e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IDA181100381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9f13a381ab04c33a5231a80c0cce5305866d39a3fdebd6b733888b6704cde2. 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/IDA181301536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3a9d6f6a6226e79c70361c1bb4f8c4a2b0addf4419c255e223fa052431c0fd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:34Z), 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/IDA181100260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0e51aa1a90e790e9324a4be8115169c8c2a4f9d398e35613dfe66c798580ca. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/IDA181301641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1418eb548007383159d723d7a16727f0aa3bf1d69c67dffeb18d773788d9a596. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/IDA181301358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108d7f5e38c8653eaa8150c93cf96867b53f9b9eb5186f860628aaefe7837fcb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IDA181301638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fc6a3bd161d939ac19e9d3f3eee2d331c676ab1f9147d4f4761b005b7e97da. 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/IDA181301363.