thumb|Jörmungandr in the sea during Ragnarök, drawn by the Norwegian illustrator Louis Moe in 1898. In Norse mythology, Jörmungandr (, see Etymology), also known as the Midgard Serpent or World Serpen
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 0xa664364ee9f1490fb632d876ae8e361c3b629df33ac6449b5527fc9bd144cbd1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/479c9ebc-0e42-4529-96f4-41fd14ea9ab5.json and https://artists.proofprofile.net/proofs/artist/479c9ebc-0e42-4529-96f4-41fd14ea9ab5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
It's a Long Way to Tipperary and You're in a Shell Crater with the Last of Your Division
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 0x98ca83fd5b6bc6062052ec013e5d5ed29826737c89185fe1394057c4526d8744. 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/USL4R2105421.
Waltzing Matilda but You Just Landed at Anzac Cove
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e93be33f5fbd958b7a6de1912271d8ce309424c0871e0301da33fa0959d132. 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/USL4R2105422.
Verdun! on Ne Passe Pas but You're in Fort Vaux and the Germans Are Breaking Through
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fff9339694529ec3f5b027de1ebc9f466f79e037b437776681ef0e348c434a6. 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/USL4R2105423.
Wo Alle Straßen Enden but You're Going over the Top
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf546326727bc022f18319b63e6c7333f1c2a4b64574d9c141e07e0ca21a657. 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/USL4R2105424.
Over There but You're Pinned by Mg at Belleau Wood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba50a76506994471798967f176155a2effd1424cffa4099f7a23115e0af0516. 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/USL4R2105425.
Gunkan Māchi but You're Under Heavy Fire on the Ijn Kirishima
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f120b5a85989359700ef1a90855d6bce943d011c3ba1114b2c9144b3c0233c4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USL4R2105426.
Blood Upon the Risers but Your C-47 Is Taking Flak over Normandy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9632e1e40a75cd9d16683058e193146e9b062c76815d6b7535233d73a8c16c. 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/USL4R2105427.
Erika but You're the Last Holdout in the Reichstag
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381cacfde2798696efca2b6d504d70cf5a5fe024feac3d73ef07a090689128b8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USL4R2105428.