1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6446a0487bf878a9b0595935a6e2c9a54f1f942e6904d49d7505bfbedd08f34c. 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/c49fb15d-da84-4417-86a4-e30e8a44d6fb.json and https://artists.proofprofile.net/proofs/artist/c49fb15d-da84-4417-86a4-e30e8a44d6fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Balno Li Ti E, Sino Ljo (feat. Nils Petter Molvær, Ryuichi Sakamoto, Roberto Cechetto, Cecilia Chailly)
Gospodi, Pomiluy (feat. Laurie Anderson, Kostadin Gentchev, Cecilia Chailly, Radosvet Kukudov)
Minka (feat. Jivan Gasparyan, Zoltan Lantos, Antoni Donchev, Cecilia Chailly)
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 → block OTSBitcoinBlock must exist at that height 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 0x65493a8f6be1ad64211b24943b8f75f4711b02668ae8b62e1d9995b8591ae125. 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/ITC490700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895fc4bb6dc4cdadbeddb95e6311659d764295c57788bb97c18cbdc33fac35d9. 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/ITC490700099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cf95bd5090c241851ec62593fc95ed6bce2fd356307d04c4729d5660524eea. 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/ITC490700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c765420763503b4c8116aa3fabdd06df7eef34616a0de6194749c14d2d455e. 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/ITC490700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d6c5021b00627776b894ffdc703b8fb1058bcc4b2ee4d0def57b260e7a5c61. 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/ITC490700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05bbf377a143c2fb02ad626cb2f028528b5a2ba073c6d85ae83e50a42f71417. 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/ITC490700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3c2b4a69ee1c149db3f46feff58942f3b20706acf0d51d3a502e267fa840d0. 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/ITC490700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822a7c39eb905d8bc657302285b19adf1cb9276beb7c02c1c68f4551bacec0e4. 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/ITC490700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278acb3bca615ccf3e9a384dd6456c7d50ca0abe8be6caacad19ab33be2705cc. 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/ITC490700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4118549c988e15bc3101cb926f6a1d339304ba9d26f978b8553e37bf771f0360. 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/ITC490700107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de02955314589c38dcd9230c0944f1b8edfb593c38fb084201f1ecc95178a35. 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/ITC490700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2efe4a12797a3123bd0b6f10152eece26ee2fc52bf9d1a7c577f7fd7b50433c. 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/ITC490700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26f2b3f47c992f83cebaabe891115a6e8d4e162937246dc00ec41a7948d5712. 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/ITC490700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00238ed5f4cd40302286aed09a5dd9ffbb97b48ba1c4bab8b05b6c6284ae4ee. 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/ITC490700111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81dfcf31cb8e69e7686c7fec080b96d30e0a235a9a9cb5df0b0cd86336ef672. 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/ITC490700112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f7fdc8bfc5676ecc0be639a7efef118cd196cffc5c19ab291dd23595760217. 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/ITC490700113.