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 0x70cecdc636eea1d152779f2d6b91ec2465bc5108e42e6a9ea26c47318da2a0b0. 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/69d3d021-4bb1-4388-b7fd-7d9430daafe0.json and https://artists.proofprofile.net/proofs/artist/69d3d021-4bb1-4388-b7fd-7d9430daafe0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Secret Techniques of Water Tiger Style
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 0x891695d56ecf37684a73b9805c92750a3471d84c1a4457ccf6337395118d62f3. 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/QZNWY2492763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf555dae1f5d0b377a1efcae7628ddc80bbf1242536d38a9f2d3f563987f7a9a5. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZNWY2492764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fc0b27add293f7125aff3550aee0dbfaced859db804f099cdb7b8d33dd0af8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZNWY2492765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8c30796e834dfd43b78179ce002879add684de30dc95fc20d58b7c6e6393a9. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZNWY2492766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81bd9dc7d33cc766f4b65086f1109ebf0a4aed761566d0806f5345f25256ce3. 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/QZNWY2492767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9d5a246d112c24a70284380aa8d4e84afacc334ccb5ce5c5fb7fb1c7e53acb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWY2492768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98424c656b2e866f6b641129f4a618e8c4fea999d3fbc698b7543d45bd57ae7f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZNWY2492769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf941416a55e8f6770dded65bd0b972372a44dfb85b955e422d30f683192163bf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7R2418607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f24a0178314f2de8c09bc8e5cb55b3a462383ea472aadfaf2a98e61e841262. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZZ7R2418608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841b8e04adcf1ff0fade3ee2ca84282bd52796333ff5fc7fe92c1d5376e35c11. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZZ7R2418609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb32bcbc54c354f2ac2ceecc9ebb1658245d4e66acf566a68f7c7a19abffb74. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7R2418610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bb1d32fc01bb427e8335bc7ed0d23c8a2d170efdd71c38801f84414582d720. 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/QZZ7R2418611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53cf206956375bed199c28ec4ec3f14e003cf9de78cf7bd8d7aa8c15e1dba31. 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/QZZ7R2418612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6580999f464199e57f1e163ab6eea7c01d92ba1837b1861dcdbd0dc69120b1e3. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZZ7R2418613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f198ca9681cef70eff355ed22f37d3ecfe6581a42e616c6be11aabdeea87a4. 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/QZZ7R2418614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29d7d8b7743a01fe1f71d0375e1a69316ad76a074d6ac05ba75065d67c41b20. 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/QZHN82568562.
ExtraOrdinary - Synths, Bass & Drums Only
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eceefb0282035130eec0c5a20cfd2c4bb43c2814d892172f71a7110000af1af. 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/QZHN82568563.