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 0x216e82e247c15ecfaa459b4d5161031e201bdf48aeb9d30a88ab1dcd410148a7. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad382cc2-811c-4ecc-a572-e9e37c3b59cc.json and https://artists.proofprofile.net/proofs/artist/ad382cc2-811c-4ecc-a572-e9e37c3b59cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Geeks Were Right - Boys Noize vs D.I.M. Remix
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 0x380538cbbb43f48f1d9324c3dd6354de241b6295b89e49fe894a95f7f853b954. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEDU20800117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90698c729b3881e2d008bd439b955ae221cf56c837fdc175c106d7304627d9ed. 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/DEDU20600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd901483af29717c081bc1fa2ac2e6c658a1ddcee2a1881ba5e8b9e40f4f84d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEKV20911287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d9e6d90ec4a342a1ebb7d0e23571bbeb0109c5ff0e762a748ae648ed8f3f6d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEKV20911293.
Alone It's Me - Tom Wax & Boris Alexander Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d7f363ef6f1645086c49680bee0fe7cb8eacf7f3a47307dc4192eb56844818. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEKV20911295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac68fc2a13c1d1c70e50f9450b5fba2f159a60f73ce450988c5c5f96f2b6420. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEKV20911303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be0da4c7aee608e2df871d2c96bcc88467c0fdd8a6c2eda4ceb1668421ee3d8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEZ200600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e286aa8fa07cb4e28a208a22309ff410e9292cc9f87de2772fa85c30664f2a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEZ200600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f1725a32e3b573b5345dba7b6acb60a7fb7d32fc5759947573520a870fb2fa. 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/DEZ200600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4d81700dbefe4544023af730a0588ee1dc8d171f37ae29964bf8c56720863d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEQ200800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e859fde3c149974c347f5066bc37e41c09ebedf46c1c6978db564c7f9d13c7. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEDU20500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79290bfc3226bc2e9e52ff3d98eb81764f146abe674a61c6ba94aa2d41632b16. 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/DEZ200600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87de5b2a8e0629734e961a455ca70caeaf46d6a87b092a54694e8b4193cab01. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEHZ60401103.