thumb|upright=1.35|Ängsälvor (Swedish "Meadow Elves") by Nils Blommér (1850) An elf () is a type of humanoid supernatural being in Germanic folklore. Elves appear especially in North Germanic mytholo
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cf789f0dad8653bdeb2ac1e51c6ae72806080a2ca957f2a9198d0925f9c76f. 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/e2425cee-315a-4583-8d4a-2f5b77285db0.json and https://artists.proofprofile.net/proofs/artist/e2425cee-315a-4583-8d4a-2f5b77285db0.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba73657b8d8ea140a7927026e2828811b67dc1a97787747e9eea9fafd4646b2. 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/QMFME1552103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdad01c821c0379ace14943912c04b1c6959fb1a7f9fd6902cd369bb5d7f932b. 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/QMFME1552104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c5996d9fca0ae533b69ae128d4459894cc3eef0db14ee85baa70f69ef1481b. 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/QMFME1552105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77222123e81de52e2e895592501df58cbb80d930be7d32be58084ca08a73c19b. 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/QMFME1552106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1296f295fad5584b3feb23f11cdeeaf988b7e3dae0d7881e7048a0b97ce0f994. 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/QMFME1552107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa8cae577ae29afba648b83e0220d21ad6c14db9215e74ceeabdd7474541bda. 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/QMFME1552108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b315540a113bfa7aba3b989d54b802626e27ce1d1e0c6e370b7ef987a1e9ec. 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/QMFME1552109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bd938e1ce250c46acc593baeab077916689769a152b382d020d831171cf332. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFME1552110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8fb6127afd45e628b7edaab8b86d0e02266d3896a7b412589efdc8f366a25a. 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/QMFME1552111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8ca04a4dc485878d2675ce29e171c906777e13764008067dc298db620c4377. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM19916951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7737c862282ca3a21d7baa1a106cdc1642d734f4e60fd8f2550ab7245e12266. 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/USSM19916952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f575596336b319fa8db5d1876ed935059fa42f55581b3120fc077d6467cc16. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM19916953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23905feba438e7b9089c8301ba580f45c69f60445f7a4ae1b93e19c16091775b. 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/USSM19916954.
Sit Down Honey (Everything Will Be Alright)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bf6d2b21e186308826525e26c2840f6b6d36f557a20e7476e57b10593e3985. 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/USSM19916955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c99d2eb9a3e6869b747e8ecee069a7ab4189a64e0c937b3dd5f4e890cce55c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM19916956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e2a2c12920fc31b0b7f3b865d610d4674a294f802766dd9386ce119fae7c97. 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/USSM19916957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa214db0b8aee7a795c5d6afbd3e67373fef20e926f0a44c4405d2c6517855d47. 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/USSM19916958.