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 0x25bbc1dd8879423b9a1db1bd02039911472df9a34cdcda0444085719e3405b66. 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/85f72ec1-3b82-408d-815d-d7cb05d93cb5.json and https://artists.proofprofile.net/proofs/artist/85f72ec1-3b82-408d-815d-d7cb05d93cb5.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 0x4ec6fe69633c5eeed0b1add57a4ec92f125091420567468c1a9fceecb3816c60. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/QZK6J2329046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dbf841e76f2d669067e9f13642f1b3aa1e5f934ed52cf3230710716e25c0cf. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZRP42399349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484c805f0648129c04a3000b3261987ef910d00e0728d23830b2d1c093b5e4d3. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZRP42399350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83754f597579eab1e17cfe76a56dd7aef0f9263e6d362231b81d355cf9f6ca1. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZRP42398350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88afb5846de3392ecae3fa30ba706fe12e5ca16c4530b36aa3c747cbc76420d7. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZFYY2431434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c80311bcf19227b09ef1513a44e529d12366da58bf2b7d5d4d86d6565f8600. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZHN72481876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba5c1d32a406394983d82c63bf061b861d013615f1ffbe3b3986115c4e1b5e7. 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/QZDA62524934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496cfe68f7e67f539bba4b49e6cb8af404e4499fc1e5e0d273eb840925639005. 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/QZHN42549526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479e37992614fa1afe5bdd4224b9cec0b843c68901f1f4dd6dc5fba157c0dd55. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZZ7S2430558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf54fe04b0e0883be3d64cf3e998d9cfeb1a419742b7b81069d63c4556fe8cb1. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTAX2543789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d7766d51a9906603ea2fe40fe287e36eb1267ac2345d27a8023d3c7d32c467. 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/QZWFM2580803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469da7d7863350b597de20bbc3421d5f9338f546a4d90ab6bb793dbe30bbedb6. 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/QZZ7L2575805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30adf0709478193735b1a74561bac8c4e61821355840c2ea351cf8e91dc281c9. 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/GX3HH2345600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1837e6a0ec538d9ed06d7f7c9f3f9ad505e76f3dd5beefbaf7b4cfab117672. 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/QZDA72484262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a4451e27b12988d4eb766079a2522859207fd01bc4c0526296b0031f8686c4. 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/QZDA72484263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd3e1871c3e57be19339604cac50222ac8afcc6a2e744c36a07264d5c193212. 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/QZDA72484264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0e8b70f89bad47eca658e7e36fbba56cbdfd02d8edc088d747f430369907b1. 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/QZDA72484265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149fa241f860d42c9157e1f3fce520e55806091a2756b5a4dee77c97e416dfb1. 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/QZDA72484266.
STRAIGHT FROM THE HOOD - Ned Bennett Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae75486fcadb9a9823e6494649bc61f64230abc61c23d0cc6273fdbf218f288. 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/QZDA72484267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30952458108ab09ae96e16822797518da36026c0ab20c560ee0eb061d152afc6. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USA2P2331814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368cd3cb72225186d68a13a25aa230d7c307bd84bc8b9dc66742719b5bc1aa56. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLCK42340303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ac9138aeecc31958320c07c0f4bce75f364f20211a2fb0f72c2082aeeaad98. 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/CH6542360169.