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 0xede4fb7674f2f6a7fd9df442cb143805dac35d6e76bf8b8e64e2896818d01f47. 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/9093a435-5900-459d-881c-b6b254e89bc1.json and https://artists.proofprofile.net/proofs/artist/9093a435-5900-459d-881c-b6b254e89bc1.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 0xdb7df7001beddcbb361366484c2d1494bd82cb5a04f7433dcfbc1a655d5fc82f. 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/DEG931500691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411b3a4fb0be9ffdc3b7e1030a9c1769984707df5522595551f57c1b013eea9f. 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/DEG931500690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7df7001beddcbb361366484c2d1494bd82cb5a04f7433dcfbc1a655d5fc82f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEG931500691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8371b72aaff1f97b43194f81fa4fbca8fbf74e3f0a1b94bb58e20765559b5895. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEG931500692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f4364937c574e724075875cf0089c4a3f28ca1ce46e7d8fbbfcb72df35b9a5. 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/DEG931500693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba96a48a35933fdde2e7874e39839f4a35212f57fdd6a5f1f7af7a511d47567. 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/DEG931500694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e7ee69108b026b9dbd1c076b330fa092accc45eb691ddea7616eed1f09f520. 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/DEG931500695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6b5f76492109d85470bee816e3a501d458b32fb72f4bc699c42d618da00480. 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/DEG931500696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509e6f7d1e3e7d9af799bc7cf661ae8f0eb109ac84a205114e23ad5f9fbe0e1e. 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/DEG931500697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f47d27fa3f20ef62caa13ec8a3ccfa5ecc15f053f7d78c1338358362e5f173. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEG931691622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d71e7ef0bd0d9c54cd3a7082b71d3736d7b0ee82dab90188efbc60e00b42db. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DEG931691624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12aabd86c204db1720b4fb6b92e4f7f6bd1ba8cf9997c140b1ae31b176352c3a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEG931691640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5dd3ccb29424373deeebca8b91fe2230f90f4dbb44aa6e9e46513d1185b869. 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/DEG931691626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4517baf8770eb4eb66e2cfd48f8a7197ea63aeac5c76419d63d6455036b1e6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DEG931691628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e28c7f5dbe65a887e9fce5e13a2b80bb9464421a2949b72982daea0df33b08. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEG931691632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f788439c48fc421ad47b56bedbceaed216529ec9d48e93660ad6d1d248ef1cb. 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/DEG931691633.
Ebo Taylor & Pat Thomas Disco Highlife Reedit Series
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b0f1cbfa20b0c456206276b41c854f2f3c753c1982572ae264d36fa2367dd1. 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/DEG931900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183f1d2f3e190e6003aa2747a298cd7b330d54ff3f67c5338a2768d3fb384aa4. 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/DEG931900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014d90c9df9c3cd2eb92d21c1ccd08431204acf45a52b62aa8a6f8cd4817504c. 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/DEG931900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c89a9311b25daec8ecc391cbacc85932bbe66da59afd07d602825163f1812c. 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/DEG931900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a24e50a2d8e5964fa2f00a9f7374c4f61f9e7b98027495d4df24497f1af18a. 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/DEG931900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c34cfe41e1aeb09838b1d0f7c7806f6fff26abee726d25b83590078bd13877. 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/DEG931900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d71ed7eaa1e0b1456a24313d004f731e305d7434f6ae67582fc006de28e64b. 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/DEG931900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86e115b61e30b5dd1862e8a6140aea112acaeb9e50084a9a89d14cecdc930a6. 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/DEG931900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56768fa47a7310e5173e051f915e11ed13a740ab65b7e78051a1e02f87eebedc. 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/DEG931900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadff85218a10411ebb99c9a5ec4ab853a439edb80a1c6406b37653457d63b4e8. 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/DEG931900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca1c5c618010931887ddcb0395abb80952e97459787731eb1ae6c31ffb56cbf. 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/GBUQH2300061.