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 0xa46d4e93b9aca444c8fb102ef84f622f3e0a21d6da63dbeeb1ca01110659a193. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/478c75f7-be1a-4a28-b9f8-a9c402e7167f.json and https://artists.proofprofile.net/proofs/artist/478c75f7-be1a-4a28-b9f8-a9c402e7167f.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 0x1618cdac929ac9046b6ec5491e63e81f6998781f00d463928a7f6355ac7b3997. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ4JJ1654940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c9a1c80adea3475dce60388924744aa37d33e71a8fc5d6af9e720ca41631ad. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ4JJ1654942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbe4c5c7b38912e80b7568c4c23c7d1a7ac02ee473121df2990a60d09a33e19. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:59:00Z), 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/QZ4JJ1654943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8464404f1ed57c3cb050ef940b590e40a7ad529db335547398fbc733a621caa7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ4JJ1654944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273530e54f49da895d4d3cac39491d463783d5e796b5c8a3b27ed5e99b8d925d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZ4JJ1654946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca50798354b100ca5eae73c687110e4fc495ea7584a14b2439cb5137666bad78. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ4JJ1654948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344646ab61c9e0756d2b07975678f19ce5424d56d16301ecae38ac094d06fbdf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ4JJ1654949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f42903f46fdbf0120ec0b8b9aac1f714c5a532bcb8fb03a10ca3dd39d7f9037. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:00Z), 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/QZ4JJ1654950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171bfac307f78944776508b477b9697d5fdf7179fabbe40a4384fcb95286d59a. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZ4JJ1654951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5638b12ebf965265c98f548e0d0dc46fea1ccc87d0f4df935dd640c45d294e32. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZ4JJ1654952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8e136471d37467f05a9116e54de25a464d27f23d00ba7296da7595510797fd. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZ4JJ1654953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58373454bf94f7007f7bbc4465c89b00db22d3e594c03a19bb284cc0ecebf11c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZ4JJ1654955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b5375659799879da1ceb94a0807debd5bbfacd423645475a4f2b0450571e01. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZ4JJ1654956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b348c47483be1e6249067438ed2df53e6b859aa22ede7614a1a59226c880424. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZ4JJ1654957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6f17b158799bf8a8767c2e6ed3f8ca56cc9056d414227964e1dcc49df4b564. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ4JJ1654958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda5bb612bade9e2c156c3f7584c05747512a34f3db60d5497eeda471c8f3684. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ4JJ1654959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6f49c5368bb40900c558b2af0babd1d39c25201ed57c1f1a1f8d4c0967aa63. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ4JJ1654960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886af1e797858b2603963a716f0bdd1dbead4dbffe10c580e654ae529cb870f5. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZ4JJ1654961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1517a617f18d918fdcc17007feaf1494ef1131aa9032eb4bfa1f669c6bc7aaba. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZ4JJ1654962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af0193a9f0da936e0899a22c5c40dbe1837a0aaf8e81627733f31d45a541e9b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:21Z), 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/QZ4JJ1654963.
Astroneer (Original Game Soundtrack) Volume 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b95daf6cff6f190a411b754e8fce868ee431edafa7e505a151eebe233a0f215. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZANL1747855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b423e6f5ab577bcdff00f6455056a6c1c6394e043f50b5f9cd4330dabe2c97. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZANL1747857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f1611ffd65744b49a6d8b34ad173b9f64331dc545a7e164c21dd2540e1a785. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZANL1747858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cc0486119cae08d4edbbbc7da19f14d63acf5adc1554e921b47a0c88759623. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZANL1747863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf194620cd4f77c16cf8bfcc446461b0d5b28b2fcfe416561be2e577e08e7858c. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/QZANL1747865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fd2f9ee9b17ab529ff5982147a986022957287fcbb67e3a32de28f5012296d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZANL1747868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf21e610f31e3e431565e32cd99b30319df02040a33d41ecc0f532cba2df53a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZANL1747869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f768641d1c65dc31db7d2f6ebb0a79349f421ab68a70fe73b97a35f191f172d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:20:24Z), 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/QZANL1747871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfd5753a222e7d34b994156ce20fbd583106e0dc99892d9042def3114e04f96. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZANL1747872.
Nuffar (For an Installation by Siba Sahabi)
Ecumenopolis / Capital City (scores for installations by Elian Somers
Kaleiding (music for a performance by Lily&Janick)
Kites (music for a performance by Roshanak Morrowatian)
Boundaries (music for an installation by Memo Akten)
Banzo (music for a film by Margarida Cardoso)
Curve (music for an installation by Cocky Eek and Schweigman&)
Pavlopetri (music for an installation by Siba Sahabi)
Meander (music for a performance by Marta & Kim, Knot on Hands, and Felix Zech)
The Wonder Of It All (music for a performance by Daniel Linehan/Hiatus)
Fifty Favorite Frontlinie Fragments (music for the VPRO series Frontlinie)