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 0xe3465b20ab479032a8b16942ec8a64c58b319cdf9c520770c958426f08871597. 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/01ede6af-aa4c-4ab5-8fa9-b17f1390e220.json and https://artists.proofprofile.net/proofs/artist/01ede6af-aa4c-4ab5-8fa9-b17f1390e220.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Christmas Music 2021: Ultimate Christmas Classics Hits
It's Beginning to Look a Lot Like Christmas (Sped Up)
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 0x6c4f15fa4172a34a6e1bad47ea3ed135e24ff927d6ea6975cf3487466a59ca2d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUXN22272005.
It's the Most Wonderful Time of the Year (Sped Up)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0a841b95de26cec39e6dc93e2526d3667f3f0ed954671fd11f6e0234ccf00c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUXN22272006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ea2a6e2e749227082b3922db335c9a4b886366aba322862ec19c14849a9645. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUXN22272007.
Let It Snow! Let It Snow! Let It Snow! (Sped Up)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7159642be874734644037e05e32754c5e3a61dfa48003bbf849c5adc0bc49cb. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/AUXN22272016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11258835c4671476cb18b80cb01f5e02c7a024486783a9611c20eb7209b39602. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUXN22272020.
Christmas Car Music Hits Ultimate Dance Party Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1bd9c8a231a9d471ba372847a595fc94b822e4436c89b388e55cbd7969cb0e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AUXN22271844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f425651278cbae7531f22ff82e877d3926aecd1d23ff1c5fdf942c6b47429f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:07Z), 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/AUXN22271858.