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 0x8337ca07969f1bba143e91689f7354752675aefa27db012aacdd36724d50f853. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6b46b74-592d-4a9e-84d9-60f39d73cc48.json and https://artists.proofprofile.net/proofs/artist/e6b46b74-592d-4a9e-84d9-60f39d73cc48.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vi Er Ude På Noget (Palle, Polle & Ruth)
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 0x976e9680cd5623aac9a22537fb1889fb75ff40bc7d976feda875a57be15d4f88. 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/DKABA9813301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93a8e04aae0484994c08b304a3554c4f72c360cd4b75cfe3565a39be9e0d2ee. 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/DKABA9813302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e25fe2d673a27e9118f67ef5df2186a960e25e67389e4e115b2784a9a84a4a8. 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/DKABA9813303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ef26baddd5f49897d0dd76d0360cf973795a9b2049e30762ff1e8e152c7466. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DKABA9813304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15a689e009c205ad19b31061aeb693c9afca1b593a6cd2a42723a0c31e6bf98. 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/DKABA9813305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b89dae39c8281db98f3a2d9d225e2452236e564beabec44d14f687cf3d04cda. 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/DKABA9813306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2a5a9be84b68deaf4c34385eb163bc72742b9f19ab4a62b4bef531bf5c7dec. 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/DKABA9813307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58f319987f0252dfe4358cf6c404e6d7847f2676ad6e4b575d8063c2a1cd925. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DKABA9813308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe03daefd2950c368ddc035d6602f7a8d528736c2c5279d15ea97b2d3ad90b2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DKABA9813309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea7748745fa07694ef41e598363995b1a1a9e0f773faab106dde5f9a89136ca. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/DKABA9813310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122f899f085fbc11c064db1b856efc6e44fb5f0767ce1a93ac714a76561c9f22. 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/DKABA9813312.
Otto Er Et Næsehorn (Titelsang fra filmen "Otto Er Et Næsehorn")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4036613f8eb1cf4bdfccfa63164bbcdbf72cf96d1f51f40ee337c3e840ae67. 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/DKABA1101709.
Ude på noget (Fra TV-serien "Palle, Polle & Ruth")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539d0ff7fa4a81b673fc43c9cd6fc1043a2742272d8898cba69d61b46cb4e48f. 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/DKABA1101714.