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 0x439aba6627b7730dd8d94125f5a8d650b279bf3abe6182f71fbe6ec376a36f12. 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/4d3f670f-ef0a-4622-8635-ea8d3173ec57.json and https://artists.proofprofile.net/proofs/artist/4d3f670f-ef0a-4622-8635-ea8d3173ec57.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 0xf91bbec492a15134c1f5b15bf861574b740c7c6a07927bbc995df6ff18473609. 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/QZFZ62374340.
The Warehouse (feat. Benny The Butcher & OT The Real)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7080eac56bad90dfbef98e2def482784967839b525264d50405f79ff3de3a559. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6MZ2307249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffd7a6515a072afc76a53c6c98f7f9da2003ad68d17a315b3be28b997b4014f. 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/QM6MZ2307241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f76c81aaa3d635f5bffff156e1020026588b64556305dcdcd7e8f048c327338. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QM6MZ2307243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbeee3c61903248615ba329d144a24924b95d5dfa6297dc5e5bb3a72435e1b9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QM6MZ2307244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5186cbf6d72657a3fcb632e06ce6a445f69ef38197d1549bd28e9652a32756f2. 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/QM6MZ2307246.
The Warehouse, Pt. 2 (feat. Benny The Butcher, ElCamino & Heem B$F)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c917a06e6dda16ae81ca7669ce6fd625baf4566a5439e1bf546d57234e7423. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QM6MZ2307250.
Tommy Brown (feat. Rick Hyde & Sheek Louch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233b29b1b67b925b06c4485ef6471f74925789281072a8566fd673dd2bd62904. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM6MZ2307251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6dcdaa8aadf4a75b8fe560d6876f0b0f1322ccbd73edf8d62d6e1cf4b0e520. 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/QM6MZ2307252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50097c76f04e211365eab23209f8a16353f47c847055911a7da8479e0c53bbd7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:11:23Z), 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/QM4TW2478301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672529a2cd1c10aa167c72f087220f6d44aeb376fb2191ea63f9dc8dc9eecd73. 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/QZSYP2497418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae14b729617f924a1a96a99917ee49c90dca5883df69ea0257c855e736d67446. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZSYP2447686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf24a64e67798a9fca81231e0bd76ab2bd240ab50de67d7dc8477bd90718b8a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZSYP2402959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a047b64e143c2922d24a16dc6dd18523b5b9a5683c0e287296a060c91f14f52. 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/QZXLZ2501849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d0e720fc45528a3ad862bb472b5dfeed981af643f66558c72489fd0a3b773b. 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/QM4TX2400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacab11c4145f97f138c8e24d1fe38e6fbe8418c4e38ac1cf391723ef46813b54. 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/QMBZ92379270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba6eac0664763b03a34246b1f650b5b68d9a0f45dfdaafccd2182103bded750. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWR2203248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe68172d604e63776995fd3bf21ffcc4f060c6288403b6541d86e0225e538fd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TW2419368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f31c15eefc7b720eae4ffecf9fefd8f46afc48373703a8f6b211ecd14f3ace. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM7282315727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e010cf2197c8d970831e9bb626402a0747254e7d224810e6503694556b90aa. 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/QM4TX2306060.
The Last Shadow In The Shade (Deluxe Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbc91ba3bd7e5cc759ab83531e0090ea5d68c8f1e2bc056642b2d8939bdbb9e. 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/USDXS2500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbc91ba3bd7e5cc759ab83531e0090ea5d68c8f1e2bc056642b2d8939bdbb9e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDXS2500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532f8fbdd370013d757d1dd4a7aee9ae1f3e33b9e1ea0ec31ea3e463573cc992. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QMDA62304889.
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