Maria Sødal Arredondo (born 6 July 1985 in Vennesla, Norway) is a Norwegian pop singer. Her surname Arredondo comes from her Chilean stepfather.Dagbladet – fan questions, 2004 Career In March 2003, A
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 0x615958ae9cd6d0d08d758e21cef23c3ba619ca1ecf531323bdd189bf3f501f04. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2e9412c-407b-4712-ba2a-a6686cd0c4fc.json and https://artists.proofprofile.net/proofs/artist/f2e9412c-407b-4712-ba2a-a6686cd0c4fc.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 0xbfc927e75f2dfe599a2286e7a532f6cf93c86c4f55860d2a9f74bad39da9f02e. 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/NOAMM0300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd6946e36e6bc8826d188b3e465b235526ab0e066cad5274a7b7c468e67f35e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NOAMM0400407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6e0e0792053900113ebbbe1bff93da07683d8e437773db38a9bd4e7d42afb9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NOAMM0400413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6000df7ecb76dd67673375e9072359fa48a223a6165b0364c26c30d3014ba8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NOUM70500739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec41ab7e3fe049e19938edb10771ba65d6663d49a36f6b7cd8eba5ce03ba240. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:02:45Z), 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/NOUM70500742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd4a70162d58a0d6ef13a3f43a2f7fb6c677ca0812229083e7a51340e1db8f9. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:08:09Z), 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/NOUM70500746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1147f2b9a94b15e13a8cb65383654d5ec88010765054579ba2fd53897e3866. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NOUM70500748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41a27ff8f2d471cd09c3f2c15aa1748e07c621f4d82b5711849a19e201f11d6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NOAMM0400370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb65736588f4b6d28db16a5b77977bdbea2667470bb807f479e75b9632e15ce. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:44:36Z), 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/NOUM70702344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c93b985d4348f586b8aebfa29e0ea8cf54d4ad232f432465a1b43afe98492a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NOUM70801031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a74fbd7891b0b2063a04ab64887cf64b4d5620771014239a8f7dc4b1c55b02f. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:40:45Z), 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/NOUM71300404.
Finding You (from the motion picture NORTH)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7436dd092cbac6c1fcd9148122c3714b0a20acc8975ab91a347bb597b60b5ee0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NO2WH1904010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4032340fd6623df82fb204ec3b12b15c6d6a9c3cb3d6b8a088632d422216777. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NOHEK1221020.
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