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 0xed8954e1e354b4ebd003d77591d983153353837fd3ed287f20dfd0e1fc4e0256. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd37636c-2ac1-4a8e-8416-0467b6de913d.json and https://artists.proofprofile.net/proofs/artist/fd37636c-2ac1-4a8e-8416-0467b6de913d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Scenes from Childhood, Op. 15: Von fremden Ländern und Menschen
Svenska Mästerpianister - Roos / Scheja / Wikström - Piano Music
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 0x06bf0e2279dd38424e0400fb5bb9486914f71e1b30a54ccd3f32fad96b69dda4. 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/SEVOZ1153101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7cb7a0e3372b669e30f8197ac1073edf5afc6c8fe38e3985e00e7e42645c36. 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/SEVOZ1153102.
24 Préludes, Op. 28: Preludium Dess-dur "Regndroppspreludiet"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9d8afc68b79cbee5b71fdbe1150ca9445b9b5b5be0319e553af7493b8187e7. 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/SEVOZ1153103.
4 sånger från "Vårbetraktelser": Min andagt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260c75e68305318a356381f71f37427c320f1d97d7012c8ee25c379104006032. 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/SEVOZ1153104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc465dc007b5606bbe5d4131dc4c60054dc70e05e4e5a4d5454890d16a4db9127. 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/SEVOZ1153105.
Ihr Augen worzu nutzt ihr mir: Ihr Augen worzu nutzt ifr mir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5d0c9647f17a52e286551bdae05be0eb578690b9233fa6017362d822a79e2e. 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/SEVOZ1153106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6c8f96f386acb85e8716089cc3c38bbe92535c4dc0b54dbd6a096025f51526. 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/SEVOZ1153107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8929d76fde4a000548950c664bee5832c303f2eddefd5a9cb96195a2ae9a69b. 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/SEVOZ1153108.
3 Fantasies, Op. 11: No. 3, Molto espressivo e con intimissimo sentimento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb21c0aed2d65a4ccac441066b1851e07090feadd2fc90de7cc71988f499d6a. 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/SEVOZ1153109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4a4e0778aa1dbd0cc240f3da70c252844c91e540f1a1e9680212f7172c4362. 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/SEVOZ1153110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1746852951b02bdb47b0a504521ca52309908624a4593e2eab526a2d28bd208. 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/SEVOZ1153111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab4aaf3aa1c98d898dc36b2881d63e69787ae298303eedd318d67d4f618d1ed. 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/SEVOZ1153112.
Är det hela tidsfördrifvet: Äta litet, dricka vatten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0cfc246e507a1305a8acbaadd26841521ee261063c6dd4724c39a470722691. 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/SEVOZ1153113.
Mälarlegender: II. Vivo moderato, maestoso e Poco alla burla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfe2c310e5ffd808fdd6bd713a0ff826c3d127b285619cba394d1966d4b4b0e. 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/SEVOZ1153114.
Mälarlegender: III. Andante molto lento, di legenda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41b8ad56db8ab648169bcfbdc058bcc4d21946ffa7bcd437516a26d688a5d38. 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/SEVOZ1153115.
4 sånger från "Vårbetraktelser": Mit hierta rörs af frögd
4 sånger från "Vårbetraktelser": I foglar, vilde djur
4 sånger från "Vårbetraktelser": Gud, alla härars Gud