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 0x775b96b08ced3eb666ced6b190362495f9e5dc49ccfd33ede7fc1dd4567d11f7. 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/7260624c-c8b1-498b-bf92-60f8a96d5f37.json and https://artists.proofprofile.net/proofs/artist/7260624c-c8b1-498b-bf92-60f8a96d5f37.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 0x5479f431f02d08cf78beff4d1cbcebd097a905f1730778d74a9ab43c6273a6b1. 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/DKADG2100393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c552dfbf9687e2a8c7554285c21caf9252388d88a1acb178671ce29845589f. 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/DKADG2100971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73c42c51ea9aeb99d97a795dd84d8b95b9dd08e55694b399ffb4e3597bcc434. 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/DKADG2100936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23a0fd5465b51239bf4336849734764dbb21ce86ab21c3aee8faf065fb9073b. 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/DKADG2100974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786c5b2f30d8f497e3dab76ccb16a6227c62ff6845e3377cc5b7c9b0ba914c28. 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/DKADG2100976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1803686966a8f75ca583834ea3f98a1ce9e52c05512566aa39d868f58c643b20. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DKADG2100972.
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 0xd42c2fd3a05e48d8895039e6878b3a4bdcfb8294376e15cb51015d53f8ce49be. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/DKADG2100973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa4b66379db2a335774b00befb21d2adbe3be910525901fd2e42a16b0fc377a. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DKADG2100975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6f98fdf13f2874377a7e8b99079f323c1a3591237cdef97a676d97c6f3292a. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DKADG2100977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68039772ae0ca9653246e1d4271265e25773fe350f039860631a72d81cbcdd6d. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/DKADG2100719.
Concrete Box - Improvisation for Hammond organ, Minimoog & electronics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e909d8531d7dd7373cf6afebdf43d6dd6d20baa0b309dc0cd475c9e60b047d8. 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/DKADG2400487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fef3c37c090c8a2de385a9298c5095263aab260626115f6d9a93a7f90e75cd. 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/DKADG2400582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecafddcc38699443539448a98a74d3456b4304dbaf860d8151b87b9787f0eea. 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/DKADG2400583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7ec7a5776c0196690fa8e475a7f0b2075ed6495ba544e51f5e6b2ef3af668b. 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/DKADG2400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8ad3aa94c92206b8ca275288b97c34d293dae672fc42dcedba81c33e0cf14b. 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/DKADG2400585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27e52b0f855f84ad90c8f7a4606a91edac442ac11914918c711a52c2253035d. 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/DKADG2400586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f0b5bb1a86e6cfcb9e3ee60c31db63e1c82f62fe3ae57b13ca2e16418ff766. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DKADG2400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6411f0e533581883ae6a72cfc39a4acbcc31c879001d7664435e37d1a44a73. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/DKADG2400581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d72a61d2eb089b374fb2715df229a030adba88e175ca3ca2b659b247fbac43. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DKADG2400584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661580db765353c3a8ea207367a1a70877d8768be1d091093988160d3718ab1c. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DKADG2400587.
Útdautt lag (feat. Magnús Jóhann, Siggi String Quartet)
あなたの骨が、オパールにかわる頃
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dead9b57840c716e47583956787b121bcc0ea4ce0492178623571c8779b3043. 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/JPZ922308879.
胎盤 (feat. Salyu, Magnús Jóhann, Siggi String Quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d793414701485a7bcd79c4cdce802df7c10cd1cab7f2509ff916bd55265f17c. 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/JPZ922306266.
Hann kemur í kvöld (feat. Magnús Jóhann, Jelena Ćirić)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31fa6e418257a1c1cface27a2d356dc600c8aa31cc8223b61ea4fdd24452498. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/JPZ922300508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170ba4fd329cd511d8f4438a6653b476df3063f64d644e98089103a6f797d424. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBUM72200902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869d0547459d3ce972659202dc9e0d964b7d4a7326d4dc3174595c033b5166f6. 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/ISV982448001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6d88070f68d1cf2872c2f9b576a4eb601c14c25141b9e141f47e381e41bdb9. 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/ISV982448002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac4039fcc693db7427ae0da1811acea07885315c0708ab26e3b5ffcdcb6f9d4. 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/ISV982448004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0d3c2d4dc5f884c60cec1bf5be876812ece42b3c2228ea9475c686561331f5. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:50:32Z), 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/ISV982448003.
残照 (feat. Magnús Jóhann, Siggi String Quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef09c57d18b7769ca53c9983e3ed50aaf762c1a6e197b6b485418d2178c81c9. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/JPPC02312063.