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 0xd43918959367cec94f34b8940b41b171becc8f478191a621091809785d474122. 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/691c8c0e-7548-4501-9305-3c999f753410.json and https://artists.proofprofile.net/proofs/artist/691c8c0e-7548-4501-9305-3c999f753410.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Little Love (Inspired By the John Lewis Christmas Advert 2020)
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 0x1ea44d617a543a535c54d151ee13aff3b6ccb4916d04bb506c3cd450cd460d12. 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/UKW3Z2000818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e1d224819689d305de297fb01b82f112d6c3f173ede04ea70d4ecb9214c01c. 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/UKW3Z2100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca266a80d11c88d847d675b15b8778f09522bbffeab4177287dc6bdaca443f4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:07:51Z), 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/UKW3Z2100695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06f4f126066d471437412216a41cd8becc3ff9872e8ca66582351d135f2d4f3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:09:34Z), 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/UKW3Z2100696.
All I Want for Christmas is You (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0023f314db5c318d2726f50bba38a76f1274a3a025f43ad77c9e8ea451d6af. 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/UKW3Z2200452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb82c21e9c43f9dd729b625fa6beea3eccb741830dadc5897645b63a56bd507. 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/UKW3Z2101573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b1ed285af5cd8ea4b6c3a099f371e6689d58c1fc69f62f4b47ce59323459da. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKW3Z2200470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba771a1137ead36edbea129533ee758153bb164e39d1a7915f3712460bf61f7. 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/UKW3Z2300851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db65a1c54278ced2a5f73b6ab0f18cf3c6c35c75c122871cb26f4e397feb8e0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKW3Z2301060.
Have Yourself a Merry Little Christmas - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6005522720eeb4714776add70f4d850d36e613c973e197b5b28e604d40fd9cc8. 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/UKW3Z2000699.
All I Want for Christmas is You - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31859b52235480cc32a850071520f611e27f6c6c7444271b307a1ef7545cf131. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKW3Z2102424.
It's the Most Wonderful Time of the Year - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d5bd090bf4cc44df36d0262cccb36dfd55160caed58ccb16d4048bcea1f333. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UKW3Z2203214.
Driving Home for Christmas - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bbd4e9f293d33896d1fe455cf434e908f4328ded8eab84af4af95c0aacab56. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UKW3Z2000701.
A Little Love (John Lewis Christmas Advert) - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf188bef39ed77b06b91ef1bb9e58d1a8afbe8f87dfc825dcf98a07c2a326a199. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKW3Z2000686.
It's Beginning to Look a Lot Like Christmas - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8201670208a56295ae44dd274690c74473c8ee09eaeb89ef2976a51b6dab09. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKW3Z2404504.