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 0xf5234b65731d30c37231131873452d053cfcf6e33e4f70b1e472b9f9a3b9463f. 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/1d63b168-d177-4a1e-b38d-39c319a33f9e.json and https://artists.proofprofile.net/proofs/artist/1d63b168-d177-4a1e-b38d-39c319a33f9e.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 0xcffab03fc30a469218efc7dad40b85283e1dac78839e3b2340705d503f41c256. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/QZK6M2352309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7942701b8e86bc20ed12bf33e7d1d7e79eefc66ff9f7f38623fd7092bddf4d9. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6M2383946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864bc507d9299fb13d737ba1e79ddbb5cdf3c1fbbe85efcc4fcf377882fff0d2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T23:03:19Z), 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/QZK6M2352847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830fb8c0a1c2558d11c0de6f3285e9f56ca0a51ca9a5174686bb7fdfb95974c1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6M2330209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d27f910202608aee5a1d08776d627119f2b05838d594cde4328fdd0202e965. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6M2331293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58249372236c7bd2c8a91372ae9e23cac15ca693607c0707400bdc13ce17d7e1. 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/QZK6M2330208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c268c146295a86cd320a400dd0252fc13c80ca62d8bb413a85ac4b4ce477b0. 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/QZNWT2373975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8f880f3b178cc8b82238509abaf15104a15df38065468edd9ff430e72cc672. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:37Z), 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/QZTAS2324425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a169aa1a2de438c708ed47cc5a263eb3f8364d2ae43c9bfdddc52663550df5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFS2324906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdac2a02af13ba64a279a62cf81d5227b7c12f37cb908a595d2a848755599ed4. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:18:20Z), 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/QZK6Q2444076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfaafc6870ed40f177f293e2df1c2a9a739f07e151d02e1d413c52198f23dba7. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNWT2474171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fdc71581a7d61d5320cbb338b0210070c1f10d263e9418b1b44217130a34ef. 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/QZNWT2462638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8156f28ebb58263fc1bf2299df3dcfe1888124b7fe6910c4794875cc3d6d1e11. 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/QZNWT2462635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10f4bc4927c43190bdc4765c195e99c316a897eee851c74a6d3d028e98ca5a3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:25:43Z), 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/QZNWT2474173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b90757924382f75a66d16018fa35336898f08b0e5280c9b900fd930b29432b. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QZNWT2463388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac42af57faecad8c082bd984bae6f5ee8d1243cbd09e97b04d693d54d3ddbf9f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:23:53Z), 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/QZNWT2463387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5da9494c566e0f866980af175bede5659e63e60276ffbba03add6fe21a80072. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZNWT2462647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146d4c49db439d02624614df77b935858239a28d1011744b80da934d56b17c32. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNWT2462639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e6f178e765930daea1f45ce8b21bc257cf9fbc9156eb443cf92512ec534c36. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:59:03Z), 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/QZNWT2462649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a306873254527d4897a134ee5414f27d3ae586e539cc6bf0eef4d2b9ec054db. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZZ7R2412759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7811afd54a3009777199d9c9854f859a69d9bb68da730cd315c70eee465bab63. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZZ7X2420340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaaf1412b6247ccaa531e8d334bce5aeca6e33dc4dfbc792fb39ace97f17988. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:45:02Z), 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/QT3F32485516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085b0f07949fc1c78ab77415275a0234a81baf860e944d3986c451ae08cc412c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:03Z), 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/QZMEP2581931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793cf939a5f3eaa6c602432c04c0fc080a80f52ba448ec1244b7e7c240e4f569. 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/QZZ7W2552384.