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 0xe2725cf314f26a37bd8a17767735e2f052066f456feaf9d53d2072f4321376a2. 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/da7690da-d629-4c49-8409-23f67a123a21.json and https://artists.proofprofile.net/proofs/artist/da7690da-d629-4c49-8409-23f67a123a21.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 0xff5153736d2fd4298fcb02d6ab5e374f5ab45b44715697fef5e6d16da6240791. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBKQU2106696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36872ec18ff726a315c3af386ca57737d46c113269212f577309cf51e242bdc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBSCL2195009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb13d9452b559163c36cc50dbd42f08b99d6e4aed4a621ebed2a3395f2662d3. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/US83Z2118753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a053a35858f8a536ee09b9fc4e7258e53399d9fb230f15e673d4a5cc31951a5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBKQU2335551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7162e9b785297fc4a140e32fd2b1f40c10982b093750a2343fa794bf9b4428. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEBE72400236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ddb34fa234b45c680f4554224f8d98412747dc055b9189152eec70b2b8989b. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/DEBE72400237.
Aquamarine (Alpas & Gobi Desert Collective Remix)
Aquamarine - Alpas & Gobi Desert Collective Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5435fbb26525fac5311e8a75b30a0e125778885ee09d057c02d961c9f6f56d3f. 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/US83Z2473300.
Get Physical Radio - August 2023 (mixed by Pig&Dan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd66ff94176f47606baa6373f582158a072c30d1beb84ec6e7c01570ec068139. 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/DEBE72300769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a45544c342efefce809842ec7504e98ceabd0c94a5d03b3d9c129c2cb0f162. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US83Z2115775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bc9409c4a850a1465a295dd88447213e6b480b1692b047cc90df1d1142c48b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US83Z2018327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece5e562e117e97e1b012fae927823241824178e56cb37c8cc244446d58df747. 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/US83Z2215715.
Aquamarine - Alpas & Gobi Desert Collective Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5435fbb26525fac5311e8a75b30a0e125778885ee09d057c02d961c9f6f56d3f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US83Z2473300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83e2787c1def4646a32dc848726fe4d40b32f5ff67a5efec6d2da6720ee1ecf. 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/US83Z2137100.