"Snow White" is a German fairy tale, first written down in the early 19th century. The Brothers Grimm published it in 1812 in the first edition of their collection Grimms' Fairy Tales, numbered as Tal
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 0xf36c695eddb740070894b76e068451c48d9c3b63f7a7f9dcc03e30c41a1b365b. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f94aa21-0fac-440c-b7d1-dc0eb91a85ad.json and https://artists.proofprofile.net/proofs/artist/1f94aa21-0fac-440c-b7d1-dc0eb91a85ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Twelve Days of Christmas - Princess Version
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 0xd0857dafdf5a4ebbceb7866ca33aca77a7230e1e1f0774fb832b0797075f1fb7. 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/USWD10526691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedee21a4a3069cc2a4400226c5638fc51324dcc1f47eeb4b6bd1338f66171056. 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/USWD10526680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cebe01a3a24bdde1292ba6f77c952fb83e0496639ddb8c985284b5ef449dfd. 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/USWD10526688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3cdc6ac52a27d6533b13911506f1e7c21c03008ff263a1b7f5b47adf8a4268. 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/USWD10526683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0857dafdf5a4ebbceb7866ca33aca77a7230e1e1f0774fb832b0797075f1fb7. 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/USWD10526691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedee21a4a3069cc2a4400226c5638fc51324dcc1f47eeb4b6bd1338f66171056. 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/USWD10526680.
Have A Holly Jolly Christmas - Original Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cebe01a3a24bdde1292ba6f77c952fb83e0496639ddb8c985284b5ef449dfd. 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/USWD10526688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedee21a4a3069cc2a4400226c5638fc51324dcc1f47eeb4b6bd1338f66171056. 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/USWD10526680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd5b04eb2c02a797c17a3a0840100fa185c1ab687d18f24007bcf29bbd48776. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USWD10936790.
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