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 0xf936e24f7240343c469103907ec878e7a9a5190260c2dc2fef634ce3c69f1c43. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c37de7ee-44b0-4fd7-a8d0-a5da4e073bb0.json and https://artists.proofprofile.net/proofs/artist/c37de7ee-44b0-4fd7-a8d0-a5da4e073bb0.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 0x3f65cff7f5133f9f4045476fa6de081d7ee463d646853834c176c436258a8963. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM80839021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d8a56a0405809bb6b17c2db20039de31269928ae26873223476ace524a8a01. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:47:48Z), 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/USHM80839022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149059a1feeed930e583a71e912cdcab611c70ac571e28fa8c106f7a6c89a7c0. 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/USHM80839024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684547ecb9130cf1f2de1ebba7b21ae850030a4c5bfaa03f41cb390907270a60. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USHM91816587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1237c0bc42d8e5d5803f40c7de47c1af9c6bca565d4e94db7c45b9edb4520097. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USHM91816588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ceaf32f5679e6a34ab4fd45e3bcea47a33b37077622e4e49af6391340c46c9. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:04Z), 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/USHM91816591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4716a36abff9340e862aff278972696a354590bc885cd1700543eeabaddc9508. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USHM91816592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a645c66bf2d0510c07cd6f287b25465161606d5626ea4569ffb7eeb965cfd0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USHM91816593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4020cd9770df1ecbf0c171156043b0bd8673d1ff9a0ef6b8df54308e5c8fc28. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:27:52Z), 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/USHM91816594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bab90573c7706ad42ef00c32b8554a19f65704aa1b698764851ce0aeb7d57e. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USHM91816595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7d7d10f18a1f6f3fc502c9ddf9166383c851573d392b77cad705c224fcc311. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USHM91816597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d089fcc734365bad4e908b83800e9ba08880cfd6b35ae209829166f951788f4. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USHM82034767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d69ed4f4378198d543dc1883b7115c73d0b83c49be185a07e548af77268a10. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:55:29Z), 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/USHM82034768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348a2cf8c76e690895bc9d3c7879b20860509cdabbaed17d408334b1a7473022. 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/USHM82034769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb438c9cfa728a7bfe05bb5c9a44f34c6364610d26ca5ef61ea97131f8901f8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USHM82034772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5905795d3b5e2c0c7fb4d1d733db205a349db4ce5dd85319db7b4a059e147762. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USHM82034773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bd855a32e00018517512f4778c9e4880dda4cdbcd6eb6662c40020fea05578. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:04:56Z), 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/USHM82034774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e48ba31be92cf76eeafe7edc248308959b945e48150c10fea02f05617c411e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USHM82034775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7a959da1d294a36e0c4895ca880b51a414ca4f9fae4328883f6e54fd6e1c48. 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/USHM82034776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79acd0db795baccc3055adcfa1d4ef94f3a62411b1b75b70b513118e22265d2. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZK6G2507618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c5712199d7ac668db5cff81692e00e9ae20fc3066815c6fd12b0a1ceb9c267. 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/QZHN92555445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c5712199d7ac668db5cff81692e00e9ae20fc3066815c6fd12b0a1ceb9c267. 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/QZHN92555445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79acd0db795baccc3055adcfa1d4ef94f3a62411b1b75b70b513118e22265d2. 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/QZK6G2507618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bf939305e212d195531149d41c921d8b59680a0c32cf334ac24981810fac7d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:57:22Z), 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/QZTB32563947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe740f1eb6da996d9c3396aa7bfe97e82b1f364c73874bcd473d48809270c58f2. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:26:21Z), 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/QZWFG2573595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0c682b1dfe39bf311321955f92d78ce6949331316c80c19153b6ddbdf5008c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWX2536887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4dfe45905480ad266c76f56df1afc00d93c4fbca77b2d843386776e61cbec6. 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/QZZ792591709.
Battle Hymn Of The Republic (Radio Edit)