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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a01145c87ef5183f53c124e69761c838248de64a4712bce8edf1edfb0b538d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72d82daf-1081-405d-8f2b-346de9e85f43.json and https://artists.proofprofile.net/proofs/artist/72d82daf-1081-405d-8f2b-346de9e85f43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ab0a076ac995b7bba22479309185ecaa021751924d67a9104c4b1a8fb959d0. 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/FRX202164831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ea489d9b26bb3528c44128498c4fff98a03329260b461e9b06c1d470584512. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FRX202164837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69e3c4470579ea07fe80a46a9fbe971961822b1412bdb66d75b21ca204399e8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/MYNS11233123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6f790642f45d223e5ca26b79ec846a5dfa840e27e1a5d811fd59d4ac91224d. 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/MYNS11233127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cda0187ec3d7c3c6f92977756d98bcd5812954fe9f708593692c635cfab72bc. 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/MYSU10895030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888b306b16a4795c79bc235236089b1322972d6d8b726d385b1ce35cbce81c0c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/MYSU10895032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8949032bb74cdacc75ca4a42efed69993e393ffeaf29152c17df069b3e333edd. 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/MYSU10895035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7648cdb8160c3e18164c8c0a125ae5307c09e045646bb8c9289b8dcda27784. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/MYSU10895038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57b2d177be31333150b6e7ae072f9faa83f051c89b6be4ef8e41999fd065b24. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MYSU10895039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86279606f4e64dfaf13b75c8a6db632f417d9ae633bad343642af18287f7d5a8. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/MYSU10895040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3150a5d11ae63a4221ee3c0ecd999b07b3859f17cae49e8bc76930d876e818. 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/MYSU10895041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3415d3e8ebb00ba7f8c82a2f180f35204bccb756b219f6472fbdb28f3ec550a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FRX282105043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09818d2e611c8b24a04cd3d42931141617ff1b25f058648fb871e6df8d23369. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/MYSU10890819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49519a781d6306427b24e70b7213e1117e2b308e214b0a6201b4aa17c663748e. 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/MYSU10890821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6727081495298953f5f770d18f8fe797edb31b873744e416c7a40817a459daf0. 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/MYSU10890825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1c4a322f61cf97ffb81bdeb5856ca7930c4376e0394d6ec39b25f2bb728c7f. 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/MYSU10890831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d05351c98c5fac7822feb18c6661eef3822985b3da0cd13a2c935a6fbb039fb. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/MYIS10802380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd483800ba6d53505eb029dfffd069edabe72c3f3403b96f77ea7c02b9b57fd6d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/MYIS10802385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4ebdaeb41e52e693eef145514ce9a245a25c4858a4bef6c37078838df987f6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/MYIS10802386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf063917648f6eecee5046436bbbddf2ce87ea911376d9f6bd9debe19358deb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/MYIS11100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd60a01ac45c646bfe6991fa4b19966f3b2e46fe765a31e87a41449624c21ed8. 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/MYIS10800045.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cef162c4060894240a3963c0cd3572f4dba0c8b72a49de9a4a7d290483f051. 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/MYLR11431656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10c0c86115f6997f3e8c00df73740ae85ffd4442b920bffc5c004a604ac492b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/MYVM12440339.