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 0xbdbd143ba6580bc5a6a0234f2f50186cf433664e9f4f2543e44b3e8b74d64464. Chain 2 (Bitcoin): anchored in block 954008 (2026-06-16T21:31:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33cd1b2a-33d6-42e3-9560-11ec656213c0.json and https://artists.proofprofile.net/proofs/artist/33cd1b2a-33d6-42e3-9560-11ec656213c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Just Like Christmas (feat. Glenn Richards & Holiday Sidewinder)
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 0x8900b901d8c42f5a7b7ea92629895fe4bf6759ed1df91c9adabf3f3078cadb7e. 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/AUKQA1200032.
Christmas (From Tommy) [feat. Tim Rogers]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d35e7a61893ea8a19eda3585a257152f182c13391e775f85ad3eb24a5c6c837. 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/AUKQA1200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00e29948ef0508e6d6608c2ba176c09e978da0afbdb141ccd93ffb344ec4861. 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/AUKQA1200035.
Fairytale of New York (feat. Tex Perkins & Clare Bowditch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745e70b081c3f509d2131ebc776959e0eda1bd777c7098ab618d9540f068e940. 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/AUKQA1200038.
How to Make Gravy (feat. Paul Kelly, Dan Kelly & Ashley Naylor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca053b51f04f80eca73cf8cf51cea249297e36f885a5d0dd78cc28c3bb087af. 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/AUKQA1200040.
Christmas Medley (feat. The Wolfgramm Sisters, Jade Macrae & Joe Camilleri)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07ac8c42434b13123094b17363280c8aa93f04b07f297443fd2db6d7cac5329. 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/AUKQA1200029.
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 0x06eb859c426550e3559e4f7434532545cc0d775ab4cb6c9ff6d4eeb960bffa4f. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/AUKQA1200030.
The Christmas Song (feat. Sarah Kelly & Toby Martin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a06e36e5fdff80657f6d4f441dfe85b5066067907ab44ae7272efa7d86f0ca4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/AUKQA1200031.
Hey Guys! It's Christmas Time (feat. Dan Kelly & Sally Seltmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42947ec7b23db9b68e5cfc1fab9b6bbb90e2645e0adfe2fe57dd8160a1d0fad8. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/AUKQA1200033.
Maybe This Christmas (feat. Tim Freedman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee0ff128d92069f26830111d65236fa6c20c978a6b3aee5bec810e71ed5a91b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/AUKQA1200036.
(What's So Funny 'Bout) Peace, Love and Understanding (feat. Joe Camilleri, Tim Rogers & The Wolfgramm Sisters)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80094d08c75a08df0b86e5cef94768672b90901a97ec96d99353fd23d7d5c40. 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/AUKQA1200039.
Merry Christmas Everybody (feat. Liam Finn, Jade Macrae, Tex Perkins, Clare Bowditch, Chelsea Wheatley, Angie Hart, Tim Freedman, Paul Kelly & The Wolfgramm Sisters)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40248975596d957c67d3afcf71589ca7defbfa89f2276049d2c78b361424d1af. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/AUKQA1200037.