Niklas Per Andersson (born 20 May 1971) is a Swedish former professional ice hockey left winger. In his career, he spent time with several National Hockey League (NHL) teams as well as various minor p
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 0xac802c23cfdb472dd66797f01359fa130ac337caa2747da13d7d5913d73342ff. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcf6bcd4-013a-422d-af83-519170700f35.json and https://artists.proofprofile.net/proofs/artist/bcf6bcd4-013a-422d-af83-519170700f35.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 0x972fcbfb691b96d76ea2b0d6b294f6d802aedd85e76ee3881df348bd9874950f. 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/HKI190853403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78e28c702d16374e9bb94dc3b196404b3eea03977b8385c37d63fe3a85dc503. 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/HKI190853406.
Nära Mig Nu (On the Street Where You Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa141a3d438c4b9fff14907735b8806e92a8343ac80a65aa4520487ab978ab8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKI190853402.
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 0x9fad57158b214726fe63d6f1a71eae2f28b83b87d93e0e1c1c30950a5350164b. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/HKI190853410.
Vinnaren Tar Allt (The Winner Takes It All)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2f2320efe74dde06716c13d6d18462131be8c33b3eb6307e3ff27ecfa7b956. 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/HKI190853411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f383a275d40508bf63d4e41c5ebcebcdd6891688db80d8f7e431294f7b2e00. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HKI190853414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a12965a45fe6352b4988150d59e7248aa9f1dc0c0a133c521ab5581bbc35c7f. 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/SEVOZ1001301.
Best Friends: How Do You Keep the Music Playing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9b7a3614fbcba866db5af5adaae28747eb2e1080e239e7c50c4cd43981eb8e. 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/SEVOZ1001304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626372e94cdfe916ac91bbb8d7b551f70900f80a2ea955ea20e5769ecb24bc3c. 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/SEVOZ1001305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e67e69584f4ecc0495b3a7ff2375fb9833def1f5f1c92741b803bb06d03c20. 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/SEVOZ1001306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5dfb62fb46094ce6d09317912af835963e5b4bf6d5a42815ebfb3250ec6740. 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/SEVOZ1001307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c16adad898a6ce812bfadd1d1d578fdc950e1a7366b2826c93ba28fdde65b3. 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/SEVOZ1001308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a79b3fb8c6bcfbffda70888276dc675871082f82832aa4b2d3f3657e0d4b17. 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/SEVOZ1001309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2354077bc67df85469eb2e6135b57f4d0c1c261eeac7986e77a7b3e6ac256e. 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/SEVOZ1001310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e465ce0c8874b9c9b9936808d30d36baee8e1147061fde3858dc9c5799be720. 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/SEVOZ1001311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d7a3e91573885c340b8e6cc93132619b72aad7797e024ccbae5c7e48b15cbf. 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/SEVOZ1001312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd948ee02b84d0cdf1364f83cfa52afb91e903eb6c9b3fc025f7232681b549343. 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/SEVOZ1001302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6c1c4edaeb610827323c2a7a5411fa322cb74e24ba9d987e4b8cd02ab87ef2. 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/SEAMA0600746.
Ink-Wash on Paper: II. Looking at Paintings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42497427239250ae85f9424c56c4a513b63ca0f6bab65d7c442f109fd92a4dc. 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/DKHJ62401102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598d90fcb8271f6db191f6e1529c060f51ac36ea53857b17ad44aa0ad28876d2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKHJ62401105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548dbd12e6e295f312ffff89c7f95aa8bf121490495738fab11135329d5bf9e6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKHJ62401106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9675849a340b6dd1f45475eac5d4c7402f7e42556ab16ea9aff8b81b78770aa6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:19:45Z), 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/DKHJ62401104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c96babce23a2751529f144e68bd1437653ac908ced1389f5a1be64b8fb38058. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DKHJ62401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee732b208edded724f2f21f961dafc455ff9b58fffe1a69777399a6b46dcf20. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DKHJ62401103.