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 0x6f450555d7e936b5002ff9730d8efbd8dfef5e555a83b742240e4f830ac13814. 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/87c2a919-508b-469e-ba6c-ebcfaa944a44.json and https://artists.proofprofile.net/proofs/artist/87c2a919-508b-469e-ba6c-ebcfaa944a44.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 0xf807194a1dfc0eb0560b8d0194168403c3c8e85d5a6c9fb7c3449b726cc2b7bb. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:59:18Z), 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/NO13Q2002011.
Det var litt mørkt der en periode eller noe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24b622ff68c9b579a871f40bc48f1221db7053d112b6652aa557cc5acb86679. 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/NO13Q2111045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fceaec703fc18161dbe9a832c598184471d9cea65554adde61f8d2ee43a7f4f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFME2182447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734f6df40015aadc15d6b2a24c5cc70ad937ef911a97472e7f053a34093258ae. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NOTF62212040.
Maktesløs (Olivini & Filip Støen Vangen Remiks)
Sol (Stockhaus solgudene må være gale Remiks)
Tåpelig (feat. Lasse Sliten) [Aten Remiks]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe916d226a9f00d559cc187abaa969ec7b90ae3cf36587c13cb36c96763b3056d. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/NO4DJ2303010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadbd245c3bf75a63e8e3a918f94beb4a30bb39ac9d8c446990773f8a1e2dc11. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/NO4DJ2304030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7da4dbec3fe7061e0a0d2c23a98dff6be870010b018d4d10d937270362aef60. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NO4DJ2304060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea697c90e69877e528380e8a15c529ffc35d71f3baefcfd4e9d95bd123b1c4d2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NO4DJ2402010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e7aa0e8c42fcfd134093f36d5475235f92a57a6d5f262c730343b241ef68a9. 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/NOZK92301040.