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 0x11fb6aab7abfe634f3de85d701ad9304349b38f4f1c7d208525516e74fa25c0b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c5d7f52-e236-4f3f-ac24-e9c9a542c2e1.json and https://artists.proofprofile.net/proofs/artist/5c5d7f52-e236-4f3f-ac24-e9c9a542c2e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blandband 1! (Sveas sång and other songs from 2008-2020)
Jorden är en gamling och ett barn (Var ska jag spara mina sorger?)
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 0x2f0c3c73f45c714f7857ae1d01733d231e236600b72552481061010da0dec157. 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/SE2BE2300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35024f3f436691036157e5450b1ce05e030c3576046bb408d44ed5f3ce95837e. 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/SE2BE2100501.
Till Rickard (ska vi fira våra födelsedagar samtidigt?)
Din värme - Gabriella Hansson tolkar Karin Boye
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ecc8a2f27cf33c3d2c4c5c326a11e7f5e28873e17d0c0fb2f1bd0a7ec3e832. 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/SE2BE1000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1905d82e413626a9e36051830230d035a675a251b9f665a055c46469a0f745. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/SE2CQ1000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4232667ba45f21a7e331e08fb9d1dca46b44e49168287fd4cd689d17a581d807. 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/SE2CQ1000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d19d5250c44515dc7c05c672252005b1eca02ac96e2704863af625bffb8da9a. 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/SE2CQ1000104.