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 0x96004a741afd6ac01b250f43d7f85c742790a60d734c928754aeae38cef2a5dd. 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/f1a9bddf-8ce9-4e5a-972a-f66f7f6be196.json and https://artists.proofprofile.net/proofs/artist/f1a9bddf-8ce9-4e5a-972a-f66f7f6be196.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Verdens Største Mygg (28 Busserulls 2023)
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 0x8ac4b6823e836cced5b1d25aeb771a90209f084980ad364a45dc249878781aa7. 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/QZHNA2357586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe286d6f37400a30456c78eaf2a83d4688440c5fc854ae391c85187bf3d0d8719. 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/QZHNA2357587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91445413bf2825e45a230aa7ce7cbd3411915610f6af4254ca2ad571dc62fcd3. 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/QZHNA2357588.
Flikk-Fakk i Fakkefjord (28 Busserulls 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7d492c52cd8462a03d62a3746af5e78231cbf4542925ee495d1af0d74d7fe1. 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/QZHNA2357589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd162568cbd7b17eb822cb2be7ba2ff7cb519dd30afaaed48b1e58dc7fc03bc83. 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/QZHNA2357590.
Mygg, Mygg Og Mere Mygg (28 busserulls 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c1e2498ce6b0d3e5ba508e3c2be8d6d01d26777e3d2bcbbb12245d9c86237f. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZHNA2357591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8562321573223803b9eb4fd75b31eb355a7280c1de492c874cac3793575686. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHNA2357592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d64ec57195eb912c00ac5532dafc4f811f281aefdbe2a06e8e5c0628ab6ea1. 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/QZK6P2301004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45351325f04efb94ce3384749d17d9aa18c51cf1df8539392476e84a0c52e07f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6Q2379698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86832e2af6b62be3e614aa5e0f057708ebfa62ec6e4b7d226032309295ce9000. 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/QZFYX2364140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cdaf8a7d6018f460b87d891d04374c706b76880edbaec50576db4a402cb8e2. 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/TCAGP2285368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f21ed3628dad47fcab7552b0d6edec4eba5f45e3adc5c3b7ddb97e8d37dedf. 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/TCAGP2285379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfc882ce817e98ee095196a3c491155f373ef805f8722d5a3487c3db81d149a. 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/TCAGP2285710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd430e9eceb8810c4fba091548c645406b8d8b0b09a806cdb30e89f229d36460a. 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/TCAGP2285721.