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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db8571c82f0e6575c497187e17488780186dcbebc7313975b100151b57a3336. 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/5232cf9d-fd49-426d-88d8-c365ad61bd69.json and https://artists.proofprofile.net/proofs/artist/5232cf9d-fd49-426d-88d8-c365ad61bd69.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076503cc6cab2315a14c04c6168eeae4c76434d77e05bccc44573672618d84b7. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SE4XD1800402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0274258a6a7dbd6f1b7016083953e1fc65a8a006db13554989ae36292f0613cc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE43Y1901605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eae125ee684dd062c683158afd60aceebc87ec9a3d37a1ccb16ef54f692dd03. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:32Z), 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/SE43Y1901607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb7dc3a475cf98b32d19c6b398d237f3ce075dc8774e9e14317a8a6a3e34518. 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/SE43Y1901608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff19154436a0ac039def832e7b8b286b33c6a1de3e90daa916071fa0357c8cc5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:38Z), 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/SE43Y1901609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d389d1617f5c115d21b68d80a44c78ffaf2ac09f04b94931d0f139684e16c2d. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/SE43Y2200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665274bfb1e06cd0da10da38112265b71e1129f0a44e140b802bce50027dfe49. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/SE43Y2200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b0fa10397061f7af5a417e7fa4c7009ed2c06d78252e4abfac484248ffdbfb. 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/SE43Y2200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd879a218681a8a05fb104bcc6cf5aefe71378a3bab35177aba4e3982deafae30. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/SE43Y2200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc252965b11ec7e59df9a2821e21711ebef224c7293e22e0f548ebca144b73e11. 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/SE43Y2200109.
Daniel Ögren med vänner tolkar Allan Edwall
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec37269208ebbe57d55947a91b259b988430fb5a59b9388be156934e530ef76b. 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/SEVJH2402402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bf63290209748fc0587a6ab2d9260b5751c4ad2c5ef2c211dc0231e7b8c0b8. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/SEVJH2402403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794365d5f097e2807eeb74a2e2bcb6961728917875859c19f97420b668055d22. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEVJH2402404.