Arild Andersen (born 27 October 1945) is a Norwegian jazz musician bassist, known as the most famous Norwegian bass player in the international jazz scene. thumb|Nor Pol project, concert in Warsaw, Po
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 0x4632dc7963dc5c5b9279ae0804c519ca067f23c4a015eb4af190e96811e2fb37. 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/b516612a-dd91-4c04-887f-04eba349216b.json and https://artists.proofprofile.net/proofs/artist/b516612a-dd91-4c04-887f-04eba349216b.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 0x82197e075e35f930f8fa4221a5b903d3abb1eee6c5e478ec2ebda8e8145512ba. 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/NOFKF9806010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0256a3ef26c50cd42cf9cdd1b839aee5a7a8c43da2fe7a0604a6804af4c52e1c. 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/NOFKF9806030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ba80a3d564f39305360a509b9f88c355343888a10c6a538a453239701307a1. 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/NOFKF9806040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c572ef5b6d93f7ab4a6dc12cda6e7d6563a57ad7343879b4c27ab81ae795ac. 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/NOFKF9806050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b0da44702d8f1994f739942b80744919fb962ed65ccb6d45a05ae6ee45a45f. 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/NOFKF9806090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17eb1c09790c59e64c3fb48df7ea5cf2d61009f27814a78d2d3e2bb13f389b2. 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/NOFKF9806100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ebb56482c573d77284bf1fa4677fd4c69bc3a988bc651a8266ad72ace579ec. 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/NOFKF9806110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696cda6dd82a1e7de4ae27d0343965ffaf78f6e2ea0fe87998015f0342cd28e6. 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/NOFKF9806120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23af9b10a9de2677dd7e6898a488fbbdeff87622b30cb41666de33bff3ea598a. 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/NOFKF9806140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15ad72f8406538d90fcadfc02dbb3f31a1df721e823fe78f64fc639ec593e75. 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/NOFKF9806160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82197e075e35f930f8fa4221a5b903d3abb1eee6c5e478ec2ebda8e8145512ba. 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/NOFKF9806010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ec9bb8243af784f2dc7730ff996773ba62ca9ebe825d1e7373646c11da6d9a. 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/DEB337101203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe897c9c6dd74b86d5b1b84f742f8a70764ebf85ad89b1433953e846ad5e4e6fd. 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/ITZ681000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc3ff2040055d50f79da3b5cb79abe20dce27e29991e4960af4fd756b8b8981. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKY302301401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc290af56965f0bdbf47392e95b83296dde753e2c68a8402c698f0a6a7cd2d8. 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/DKY302301403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6100fe50a74d54ff55419ebddf8e8a95e01a58727eaba48f39b3b847233e9d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DKY302301405.