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 0xc8ca9fb3748c795402c9f22856e028b1117ed3b865588193c2c8c426a8beecbb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e73b0911-601d-4f60-b8bd-0b0d39563d94.json and https://artists.proofprofile.net/proofs/artist/e73b0911-601d-4f60-b8bd-0b0d39563d94.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 0x39bc74a1abea2992d1f8ed8650df70eba23331da715f34ac09758bc04254db97. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBHYE0700203.
Sirens (Camo and Krooked Remix / Bladerunner Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc984063b9606eb736380d26b858c85c5b4f15b94ad95f6cb46519089e18255. 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/GBQZQ1101288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e89c9a0dd5543c10cc209b50d3bcff0b37aa2478a3811a5a16ec1cab35b7bb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:03Z), 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/GBZPZ1200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103ce76c214ff490ce070d21eea6c91dd3b16b17277e2cad31256a720766a2e9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBA2A1800011.
Physical Dub / Healing / Inner Mask (Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a0145b9cabf2d2dd20722398ea34ee52ed287fe0a1794d2d117281c7d4f0dd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLCK41095963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989136dfa90b7e85b2452495737af705dc4db26489d6f0d9afab176a9fd78f28. 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/GBZSW2507701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221b268f0bff600b6f7e919ab2ac23add760d4f3b356db37c421a9c7e3586904. 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/GBZSW2507703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188a76e5363341e7b6762762f0c7b5f79af759190ac06991a7b23fb6a7b83bf8. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/GBA2A2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b8180ffea23442a5ebdad779a569c28c319cdcde1b0903fc6cbd0f200ca130. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBA2A2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da69b910f1c97281ed789710f17eb3e1b9152c5f01134f32f39f41443362eab. 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/GBA2A2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb337c32ad9b488dfa55e67bc6b6cfdc4541efe56ff1cd40b078bd90b961122b7. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GBA2A2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24901cee010db73ae5048831a323992ef4a6a0caf654db9a95932c4dbd2091d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAN49500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24901cee010db73ae5048831a323992ef4a6a0caf654db9a95932c4dbd2091d. 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/GBAN49500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19779ada616dfbcf737d5aa8075511dcc1d2fe9a76a07f2b55b39c58e2bcfd27. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBHYE0600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cb06f43bffa567ec59b2284bedf2857af196d8ade8b93cab0dfdeb081dbf71. 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/GBRF51900023.
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