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 0x662b14f7888de6f5722a50cfc95ec95249138f014fc4d550a61113d98796d6e8. 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/3998ff75-842f-4911-bb18-c5f284ff5e35.json and https://artists.proofprofile.net/proofs/artist/3998ff75-842f-4911-bb18-c5f284ff5e35.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 0xd30df30fef08cbed77a63394a1957a23b48bddf12b049ebcccf07ebde5352a64. 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/QM4TX2454009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bac1bfb546c779fb7df133a2c59fad9d97249501e08b1133063661a9ee228b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM4TX2453999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2316e98e9119fa8e777f91d743bbd590be8cac2064c5368a793ee81866f6ec. 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/QM4TX2454018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f520cdce03615bb76cd7f342a17600abe22e6c819da67c96a11f42f26cf8e6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TX2454031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c001ec9e497a230c97eecb147973f6e376a37015d2dc7041a2e8b79a4a0ac7. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QM4TX2454016.
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 0x9e72ac00b9757a6d75ea8dfc810e1554ca0b4735677734a8c86b272ad4521ce1. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QM4TX2454024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314f47b6bbd843af4919db310c7608cef5ba7e4839f3c396cfac21e909462efb. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM4TX2454027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b8c3f70594fb447a6153f424e893c222b0e9cfd96bd70744ac646819f6a529. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QM4TX2454028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca1c5efe6ffba00da763e0e08f7062ffdde49e738f37ba1bfdd3dbd457b259a. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QM4TX2454033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edb371a4a5bb7d3f8d69115b8b026566dfc9f80b4c02ea6c74388f2e8ee9b1c. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QM4TX2454036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92c119a4c68c408e3c00a80759d220ed3dab2f3bd177eed39b0133380c41a73. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USIR10210881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7dca7cb89248b42e673ab3b3c8bb710fc9163e6f1c7b328a21481f2b8e213c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USIR10211209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934812bd2c44bf87c3c7bfbcdea6451c70d45c4baede1f36c250812517606c9f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USIR10211200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379dadd5e74955866abe9f9f3bf4c7c1158f32992f935a7716ae6cb6abde7264. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USIR10211197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf01e65bfa59a1606c8f7fdc4c2c7e695801887cbd488a0fd68314a432428cf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USIR10211211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeaec4931d714ae85462bf20f40fe38d1f3247da7bdca20107b95b156e7a0d75. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USIR10211199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce9ba96f204c2101ff96033bb9bd590ac3bec1f72ef15021488b39d061eb539. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USIR10211195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc056dab471b554f7a86d076eec2d43a27581f9a77354d1d285fa6b4283929d72. 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/USIR10211098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ee4188800a86af009cb2ad939bbd7c937ba23d0e8703e7d2f43099c2ed1637. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USIR10211218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b87de91196783b59ca26a8760fe30ddedb31741c836981bdf1702b6981e8c4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USIR10211198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb80bd0f3d292358f037eb6db98a6ae5945c1f4cf6e4eddce34951dc05b1b1e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USIR10211196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2864fa4788a003c10f912c6e84fe3bbbcaf8c3b9530636e646437c4096cdcb3. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:45:55Z), 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/USIR10211207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f39a2e36610cabff832184f5d2329bd0233cefce35ba78edc9f45fe2c61f158. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USIR10211213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e531077fada523fd2c85d0e622903c902c43bc9c5999f8df2d0ede6f25b1b4f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USIR10211215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd598af83a635dd72c690b966fcc406bbb0b10d0f01dd5c221674edc4f632dfbd. 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/QMDA62326696.
The Blueprint Collector's Edition (Explicit Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc6c0bc10713d3e8f71a091e74b75f3e26b6fd0fa1285d00a0d92df29e695c6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDJ20201186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc6c0bc10713d3e8f71a091e74b75f3e26b6fd0fa1285d00a0d92df29e695c6. 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/USDJ20201186.