"Edda" (; Old Norse Edda, plural Eddur) is an Old Norse term that has been applied by modern scholars to the collective of two Medieval Icelandic literary works: what is now known as the Prose Edda an
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 0x1ea51a600c9f688d6354a6a3af4a0f473bbf73d4eb6e4df6b758ce9cee1ce36d. 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/2089c73f-d762-42e3-80df-99402d0d64c0.json and https://artists.proofprofile.net/proofs/artist/2089c73f-d762-42e3-80df-99402d0d64c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x5e5bf975ed60e91d0a152adf4878c006461eb986b1c30271375592c12910df63. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBMA22476733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8742d8b821f12cc8a3b79f5de3d44741ea3955a6f1bf26b55b2f59cc896fa35. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBMA22480864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f591829a0fee17f0b38099adffbfc397702cb8071c3d4778f255ce4f07a92d1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBMA22475353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf34a45b1c8eea377085c81648e746d48ca8c7d9913c5cfa64378f67fdd1e94. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GBMA22488729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f472f1b9bfac8c55efd6ac46b0ec2d023a4b3fff6f63a1d4de44d36b40d5190. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/GBMA22498202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3565e42c51ffb6316b974f7392fdf0cdfd7379189f5520be8bed6ccb572d581c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:22:55Z), 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/GX53U2330321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc6e8e6c2fd8c106534370822b95ecba28633eb467d55291a0329be60c63a55. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GXF9Q2433154.