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 0xc782c97b07a292901aff9dc181d54157ef7b056b0bb8248830e8b007e1fb3162. 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/07f3746f-6157-464e-b98c-eea27fdcff45.json and https://artists.proofprofile.net/proofs/artist/07f3746f-6157-464e-b98c-eea27fdcff45.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 0x99e53e57e8ef1909c06e737087a077d3f0bbce90f16651932967daa3fa7583ac. 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/AR8TN2300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cc7bf4c6a676b6b631d4e7fcd8b9dfa48f0aa13b4a6640c9599b984207a1aa. 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/AR8TN2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e46357692e9838ea3119d064655b6dc00c238253a680ffb9a5d96858eda53c. 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/QZHZ32257364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b4d061e2fd33aa73deecfd3350cf65a5382afe500e826f666caa3595127f0c. 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/ARQIH2190279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f7c79c75244a99e2e9bc2347584352e429e91b7259b625c907b5bf2f9e81c8. 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/AR8TN2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62727bdd8b676f7d95b277a14af851af6eee8093a0791e029d991f791e8097f5. 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/BK4DA2326708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0acaf7e578c4b063b159826211c48bea4a6696752e61a29b74cf4242856c036. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UYM122300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01119d8d64dd09311a1b6e317e786ccf2e7e85fab2ea5d1853582f5424bc0f9. 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/AR8TN2100422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a19d9b823361400cd4c862715be14c714e39f45535eb8d1c09037953a903c7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR8TN1800234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d511e9392ba5594511a1d5014c61d83e46dc7395e793a7adb208c0f91eec52. 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/AR8TN1800236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17a840a24f486eff8722a189d725f3d42c55fa55ee058650723717245ea87e2. 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/AR8TN1800241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c76fb07b9ab7e791717dd519db59078758feb89c3d3916594fc87545ec977d. 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/AR8TN2400286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb880f9ac2b43dc16c12951e322821feab67f96823786a0a123804ecdce66dc93. 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/QMFME2465447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c874cc5c276c6ab566d113917c20774cfb114f328d6f8f1cae3279e0c5dd01. 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/BK4DA2462013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3651b530c9ec087275ca054ecbf0c20be02f2f3aad2fe25fe56febdcd123a243. 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/AR5UH2302570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bb53b1f1fd7ec67ef06f4537809fd24a86f8445ac0a19e7d6dba8f7440cc8b. 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/US7VG2490108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd279699c25b6f04fb7709908be336179d40d174c058ae5f76566b6a33aae9f5e. 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/ARQIH2301410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714658ebc885570d0f9db7d7efd9cb831ae4c8bd13ead113af8e2f75491ff784. 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/AR8TN2300340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca6e5877d3a6691f9dfb0ca02a9e32074af5f195f1a3b43821739f40cad362a. 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/AR5UH2301362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600b99e6b9e9896ef9a0ac87d036ad92acb59b24a613936864c66b6c90e86441. 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/AR8TN2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11d6a92c5dddfb8b040ac5d1fbfadab20695d936cc55319a178ded69de28cbb. 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/QZK6P2214309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4a38b11af362326bec17ff8294ed71dd4d4f137e33d7716ea270e4bdb8e714. 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/UYM121501547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba80b0ddb3076698098145601bbd453c59197891448a6ad921fbd1526d7c033. 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/QMFMF1548629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd54f9cf92dbafefc08094682f7a3171b2ea579b98cd705be5ceda25454998a2. 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/AR8TN1900601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba58e74593f74b5206ef6c6a843be13434e127a5fefc85aa4a3b4129e82afe7d. 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/ARIXB2202945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7f114784a4965f8e0bc40e654ea0b0d177b2a897835fc86be2e8fbcfdd98d2. 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/ARF102000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746a005f09594eb044b0a07ead979d5c524a9f531e9111b16cb9e587ba952458. 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/QMFMF1588306.