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 0x4bf5a80ab9af026dc4ce038192cf57cc3bc855c113a800a95f20eee20bf0b4f8. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93dbbd1e-8994-4190-b952-7bd3459ef5fa.json and https://artists.proofprofile.net/proofs/artist/93dbbd1e-8994-4190-b952-7bd3459ef5fa.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 → 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 0x60f9abb2bb19cde8c28f3b3c6848127239d373817c0ef3c518da9e31d33f9b6b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NOGHH2302030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b8aa6c48952cb3cded892de9003d654cd1dd8354cf5d9fb0b984e45e40515a. 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/NOGHH2302050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253d55089d6209872e113bdc70f72dadfb459ada6a06810297a08d13805f9ff3. 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/NOGHH2302080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab473b1fc5be22d2f4fccddfd226915f6d46e47c1f0dcd8ef805a3dc03f2e4d. 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/NOGHH2302100.
Springleik etter Marit Husom og Tulla Tallerås - 1
Springleik etter Marit Husom og Tulla Tallerås - 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2818cef05c3db7c3ddebb42a02e3fd8eee07b4744c71ff840f172e433929b970. 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/NOFKF2208040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c2224e3034c81e5bbf9dc8569cb471c49cfd6de2bbea295436a0edc6d22c60. 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/NOFKF2208060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6da4fa0aa10a63518e6def0e85e1f013fc5fe54a6b6ff0313f4f168e18c45b. 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/NOFKF2208080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6a501b9815433cdea6e54574404d910eb16e8ca4c57b2db56212218023758c. 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/NOFKF2208090.