Stig Erik Leopold "Stikkan" Anderson (25 January 1931 – 12 September 1997) was a Swedish music manager, lyricist and music publisher. He was the co-founder of Polar Music and is best known for managi
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 0x358d989ca042f6e76768ab3a04e018c28b4fabd5b3e68887baa09de34102469b. 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/8de7b92e-63e8-427a-ab80-15ab5cf62ada.json and https://artists.proofprofile.net/proofs/artist/8de7b92e-63e8-427a-ab80-15ab5cf62ada.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 0x81b48e65a3095e3575b0055e0629d13ef651f4dd031e86158156f866b954a816. 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/CH1602211152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200ec22dce8a6922b3bc0032ffdabfebdad37259da4a4d56ee5db85790c4b98d. 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/DEN960432909.
Reet Petite - New Music for Flexible Instrumentation - Demo Tracks 2016-2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4745d567388bbd9b53a729c515c828fe9d32e452de477c6aa366ca961364c408. 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/NODGN1607120.
Scandinavian Invasion: An ABBA Tribute (arr. Nicholas Buc) - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ce8bf8252ef4c96ebb5d7d05e060d301efd49ca0b9392aaaf689bd8ba22899. 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/AUAB01650697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4aa4aae15d127b26db53569c5c96b20aebebcc13bbd771ad8ca78eff518f294. 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/SE68K2300287.
Dancing Queen - Symphony Orchestra Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56d100c594ea1b81c25794405c82e43ee0372edbf9cb88961c3c70567300770. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE68K2300291.
Dancing Queen (with Lahti Symphony Orchestra)
Rajaton Sings ABBA (with Lahti Symphony Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba4e17d36702eabb2857117bd4d5275608f353e51229f7a53401ede264d6a16. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FIMMS0600078.
Voulez-Vous (with Lahti Symphony Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97d63e8da22baec04273ef2f6c59aca37aa4dbe698a362dcde335e2fcf5fe92. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FIMMS0600065.
Head Over Heels (with Lahti Symphony Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf300cca6032a08d42bd43ab82f82d12a5f62ada0d1a62361e4d86eb58697ffa. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/FIMMS0600068.
Mamma Mia (with Lahti Symphony Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09119b322c1fc73fe35de61c9aec173b8527acf29ad6b5f415da0c008b5eca7a. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/FIMMS0600075.
Gimme! Gimme! Gimme! (with Lahti Symphony Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac0c56989b5fef6522fb02c184a75baed93410ee736aa6ef5b9ac5d8323ae6f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/FIMMS0600074.