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 0x97ad7ad9aeaea9032d4c7791ae282e6ce067d4901bed622fb903be892fa54107. 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/b11d74fd-40e7-4c20-bb4f-8968b3baea38.json and https://artists.proofprofile.net/proofs/artist/b11d74fd-40e7-4c20-bb4f-8968b3baea38.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 0x5f5dadd77d13dddb59a2ca34822a464db702d6cc1a8bcc49faa2cd8b7c9bfc55. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AEA0D1867695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9d1276bc90ccef2e0353dc926e90804e8e5a386147740e6dfdec909526cf51. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AEA0D1867697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b10d02a5c1dc577d0be8ebdc2594f8176d8b1761da23cb751ce6ecdbf9b355. 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/AEA0D1882432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b7c5a3d2cee9dc9a5ff26f60bf214657c95a7991f49190b277a4585fc43236. 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/RUA1H1803274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcae8da99aa1cff95938bd874a8731cca882a8b4144a7805bb79ed577c981628. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/AEA0D1948607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0fe048fdf21806ec775677d9ec8febd748457d33d74a1e044c422bb9039246. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USHM21929830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4111086a9afb3df0f0f2c97c468e4034a8802d17537be311ea6c3218369d4116. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USHM81917453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28211381caae678b0172eb81367cd6927aebd0b1b4276cc6c780ff6ebfc6f507. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM81955876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2cdaa5526008a57a526c407703653504b7665f999021ecc30cf9d36d184da5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USHM91957851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91248ac558960c75fdb0888e85209797ab64cf5f7b70abec8a21afb5937cba22. 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/ESA011975425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76748d4c6a0ab0f6cb110de3ae7121b49bfbcf418f63969f6a46f4422472f5c5. 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/ESA011841076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb2347f3802c6e703c9cf016ccb818189bdec091d26a52303f8bf52a8df1ab8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ESA012007908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650d32319d83e281b27952a7074c12b29e293110b909d1c7bc1d44f52b2c51b7. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/ESA012023861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249eef4250b6b22b39eca694b19a6b62b8bf94193a544299b36ea80bdab99c7c. 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/ESA012036661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6822db0549628383d61c1bbc09c4f2ff71d2c1e26afa7f206c008288dadd4da9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA012040066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd8c906b4370caa0aee7d784eae59a18207fedc4093fa5f9d7e7831d1e7e3e9. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM7282031399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845765579667f08e5433edd3f87958eada314e6683e4cd702767de01479256c4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM7282098973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb8226bcf04986d9ce8c3552cc4e40636450b6cebfab17e2d826b3187b32149. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMBZ92080470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b9e2ddcc225763a1188d81306441b3516efbb5ceb11fc831ba678ef599c290. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFME2021941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862d281b29de19b5a187cd55558ba51e5a881beb3b64cd827e2576059502bf46. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QMFME2022242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fec9d6d5da64ac4f29919449c11a0670032c244ad6be016148f1f392b4db539. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMF2046031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa540cc751d13d07f80c2ff88c53116b070739e667c25e35ec0fe7c7e7410136e. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QMFMF2047275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79933dffcf24c496ab03f61fcedf8227cc1d7f0f3205af4a9483baebd22ac19. 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/QM6MZ2161686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de25de3ad88ff82266f68488c50f9a99558027c1ed17bb5eac5eec102f16723. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QM6P42140361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476185d53372f74275dc95c667a23f2e063ea64dc92b4523e30e0928774c4a5d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM6P42174242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfc0c23232068356615bb1cc00fc9e2366c016ea7dddff4b81a9bb3ec4bdffd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFME2147712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1d1c6ba6dc6bc1e4ab77f957b0578b530e5b59cd0564ca046bca01a29714ff. 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/QM6P42173752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1539c2223cb88874955adf5a6561b0cf7c6f2e457162a6b6db14a262e761919c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM6P42173839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f8b68c50f96ebf0fbbe562dcf0aa7d664a27394482e4d48fe42a3a295c7268. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMDA72189145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca0f3b4c7b33a567bdda02ee5c807cb436b2193c137f92f2190342737a57d5a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6N22134881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9119901ef620046dbe1e25b71efe1a93d96f74828ea79e7be23fc5dafca0d93. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TW2181198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e8488a49ff4d7d88b0040afa9b3298476eb2e9990387b5d7d0490e45ac21f2. 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/QMDA72189120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fae365e810f8ca29097dbe92a60b0a397c45904fc9f5d1b797e6c47cc8f377. 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/QM6P42173462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a444ed68c9d93dc96f32ec5f9958c98378f3973c4278033bf9123300fbad2f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZFYW2030098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff9070578720f145c587f567b9a7200d3bea248858c3fe46a9915164bb7b241. 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/QM6N22097855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04e8ba003e14f229d6231374fbe22c5f5fe78a2bc9f17956fdb4dbfbe6f24c7. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QM4TW2277336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f10dc0e6eb5ba271673e538a6fe88e5d2a3692066173da644614c4c1191420. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-20T11:51:14Z), 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/QM4TX2233538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89540a206bde0b1f6d5dd2bed99413026c56ea4a4e13edaf7c309536290cf9a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMBZ92298873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0363d096ec703391dd339f50a0b153c64c4688b0f2668f979fd9c0e357d6ab. 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/QM4TX2324345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf32aee70ef4c662cfc5a6212e65f60d6df69cc9ee7cc11b5f72e9fac33faf65. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM4TX2344902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa897f31a3462922e30036008e496792f99458fc64ea9b2f257d80582e8955e26. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QM6MZ2392418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0e289c00b3e833abde0563a17dff76bf72b250e902401deb543e939ca86715. 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/QM6P42326477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b1495a7a6125b46bb790f261d7d56ba43ece6e86c7534ba413eda472eb6b55. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QM6P42399497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495482b0d65c8457266eb9d491fb4e97b6868688fc505f9f44c382666e210b99. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZTVM2340758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe705212a15fd5214744619772586f01c124665f4102bb0aded373b67de60d6b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZW9M2325828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed836234236dc3eec5250cf741aab28a8a6e0fa5e44b6cfb2b5657579c07923. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:20:37Z), 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/QZ5AB2405931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fc8ce1a4685b3a06851da45d279d97c06aa3f6c03655e6878a3d2a26b5567e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZMZ92439370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a8e188e530f843c0681dd34a5e0cbba28a96ce871235e3b4b8225560e5da03. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNJX2431135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320ff67a43ff81cc97a460f35fe21e87d9bbe8f2d6313f69fe1d9baacec1ff6b. 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/QZTVM2418162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a13a011bdc434a2d89c68c353c8066202b1a0b867ca46d0565a60af7855327. 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/QZW9K2429086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01191a6dfe79916f98ef9f6351d334287eb30c8e7a12ba34d165b9fd2428579e. 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/QZHZ51981319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3135f6a0d81c19d8ae60f9f04ad7875ddf1c7b241efbb3b9708cc63731ea1e1. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ES16E2100271.
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