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 0xc21c47e5b010ed9fe8bbba985b6b484ae01d953e3ae8fa79b1271fa2695f4dd2. 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/2122f1d8-2ffe-4c97-b32b-4d35070af6bb.json and https://artists.proofprofile.net/proofs/artist/2122f1d8-2ffe-4c97-b32b-4d35070af6bb.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 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 0xb61712e1d5694139e56ff8b56695666634b66c746bd46ac03ecea50915aa0b72. 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/TCACY1760485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39273fe03f3d9313389261d21088108f9376d0e9d3c9b35f10c5993176d47ef. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCACY1760487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22be86379370d8ae84586073a31513375e021b1f33a34dd6f3d6e906d53ad9. 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/TCACY1760488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf1313e2cf58167acdebe0ea3525693e38d22a90fb8da6033292b649b9315b5. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCACY1760508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bd3454f72b2ac655f27cec91f9b7b4da6856c171b72c7171b524dc0607d77c. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/TCACY1760512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9d7930ccae4243ecf954efb0eb04dce0615f328913d245bbc1dffaa71513df. 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/TCACY1760514.
Interdimensional Act II Set Fire to Saturn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298451e437f8041f7169e334314d69c86aab57aa94786e3eb879701b42473a6b. 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/TCAFC2033704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8265f9901b7e7e9b19d936345dd551c940e3620727c327ba419577101784dae6. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCAFC2033716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f45b2bb30be19832ba6ff0bad67dd2f053937f5e04f65855d84731a2f963f5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAFB2088026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9574bcc663405e94e7f50bff04d62595115ecc0603cee7e55fbaee07c0fdee. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCAFC2033727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e04ad88375d0e095cc4f23f31e1bc670c28e6895cbbca134fc18ac436eefbc0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCAFC2033735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1220311bd9fc84d9eab5ecd7aeb70209154435e6e523f61cae513cbd5e9aab0d. 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/TCAFC2033740.
Interdimensional Act I a Ghost in Cepheus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043829fe8780829371869337876f0208f58536a14abd791cfa1fd1958d293823. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TCAFC2011631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed2d2e660e551da1d6ccbf52a4899a31deb79b59d6437a28530f9ac54e0c478. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/TCAFB2072757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f9adb2db67f492bbbce26c9bbee0c8befd99ce18ca0ba05e02d082dc9f82bd. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAFC2011642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e3a7db06dda25b72b5081e5977360306601739c65d4393333d64d64edc6162. 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/TCAEE1914903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b68d3d26c210bed4f14462b5169d2ad652d6b2796544d3d4dc5d152be4b3734. 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/TCAFC2011649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db2ef2c0b017f9976492fb87c61f9f2dfccf5ab504ca45cae83d928eedf6f93. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAFC2011657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3be21fc27e454bd308d4e38fc4e9ce042fe3650d70f67ad0f1fe3d8cd8deb5. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/TCAFS2153287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65db9c603fec78c68b368b9dad958590bf9ab0349ffb9e3b6039b0d6f5f601c8. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAFY2104763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274956f30acc3b095514a44a1a787ba7ef413d6cce4965b05ab61de49f204758. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/TCAGC2288022.
Interdimensional Act III Shadows in the Sky
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b8a048a5586b148cb418aa81c270f9f6ad9caf9cf8fea218152eb76ad426c7. 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/TCAJJ2503345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907130655d2b0f1ca0069e81a19029ca9297912abe3c0be868a7ce06edf0ff77. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAJI2584663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fff6d55e58951f195facea88efaf93af8c1256b0a6539fc75a9f3d75b4e62b4. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAHA2314653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274956f30acc3b095514a44a1a787ba7ef413d6cce4965b05ab61de49f204758. 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/TCAGC2288022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65db9c603fec78c68b368b9dad958590bf9ab0349ffb9e3b6039b0d6f5f601c8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/TCAFY2104763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3be21fc27e454bd308d4e38fc4e9ce042fe3650d70f67ad0f1fe3d8cd8deb5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAFS2153287.