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 0xa61f1b061401b0d9914a3fb7818585d97358575395e4a920e89477fd938fddaa. 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/30ce1914-dd9b-4ee7-bf92-bd7f234ebefc.json and https://artists.proofprofile.net/proofs/artist/30ce1914-dd9b-4ee7-bf92-bd7f234ebefc.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 0x6cdbea53ada29c58d6ce97aa1e6abe0b27b2ab9cecae21d1ff0820e91b8138db. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEU601606450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c218ac0611a3a0361e0392304594ac217442b9fae3d80023d34cc3900798229. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/DEU601606454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd590ea91b9b21227c1791514d9f363c56c949601580695fa9d8d2a7e13acd86d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEU601606460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839f42b17156a5c38c553904bba379e2697c9eea6565a783fe302a28a6998e72. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/DEU601606467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c189d1849642d5cca198bcc8d7e8252707a6a23ee157b3c63ab565766db8cd7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEU601606447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa484f2a469b3511b1b5ae36c0adafbe193924b63f2eb746ed864c4a984cef0e7. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DEU601606451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c218ac0611a3a0361e0392304594ac217442b9fae3d80023d34cc3900798229. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEU601606454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd590ea91b9b21227c1791514d9f363c56c949601580695fa9d8d2a7e13acd86d. 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/DEU601606460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fe77d28339b94c78a76f049a537d61a6f69b1419d85efcd8d5506f52809754. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DEU601606461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839f42b17156a5c38c553904bba379e2697c9eea6565a783fe302a28a6998e72. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DEU601606467.
ライヴ・イン・チェコ 2016 〜バック・トゥ・ザ・ルーツ - アクセプテッド!
Back to the Roots - Accepted! (Live in Brno)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42de0b08405c6888f3e3909a62bab4b72ec7ba6440c585ca649c0fd5d5494313. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEU601706923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f20f6d618a23568f2ebdba22843ac87ee436ca97e6fe3f9da60a04d5dd3c50. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEU601706926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ee52319c132bf6222572ceb3773be470e33a150930626da7160e245039a23b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEU601706930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83989cacef1bd01c823de272f1d3b135c48ba399737740c7ee641fc33051935. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/DEU601706931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557fee9d27ce13cc319a68bd1175acb854c82fe33e4de213cce1e7225dd1ac29. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEU601706933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b18948b148034700edd4938b37ada8c954cbbf8ce976d684c63ee24449f002. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEU601706935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3121394c615dd335eca9b4c0aaad12f66d0eeec29196d7cb3fa7478150cd248. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DEU601706936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac21e36b87ea43dfbc9fed6e541f39c3831b43d2c0011775e92a8911b70718fd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEU601706937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fa89b55f4dfe16c48b06e6c46fbb08e0d6fce7f77be26671bf59e181aba5ed. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/DEU601706938.
Screaming for a Love-Bite - Live in Brno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980e81d7c6aaf1c53094f25bd1068dd22cdb48937ac35096fb62da649937ac1e. 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/DEU601706939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe33bf2096cd424628c123863187dec6a33d1938e4ab958cbd894e2e7443f7e. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/DEU601706940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b32a4c424b29b8b5fa82d235dd18f57748bf96e776fded15769b362327da25. 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/DEU601706941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339f72a532e28cd2992671a5ec94e81e67afb7db477cb5095721d07a7600dde3. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/DEU601706942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6378b771c55fa5e99f84a5fc211a1b740897b92a7062940f8a25eeee572154b9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEU601706943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc593e9b6def86a8eca6f8c032c920342666e8eba79cd8f2855ab47841320e988. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEU601706944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1da871f6bb718ff117d15fbc762b68bf8f791c85d36c29732f3c304f2c66986. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DEU601706945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1c808b89bda64c5dd234a5fc4557ee9adb7132cc2e157ab0e1809f8d3a6a90. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DEU601706946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590afd8a45621be2977f8615b75d4f39fac736e1ca68c2d0cbf0d0d9e0fb74f1. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/DEU601706947.
Outro (I Give as Good as I Get) - Live in Brno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c7406c8c72cbfea1fdbfea4f9b2f4efb6d660267d7f0ab8c472e40ce918cb0. 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/DEU601706948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce4dd32bb8c53e99ea8d6d05d6d382ceee85e3c027705f90669fcac2c5cd8c0. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/DEU601706949.
Live At Wacken 2018: 29 Years Louder Than Hell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49381b9122944d9218045b95d49fa24848fe7877b667d92097e4b8bb0c8a0bb2. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/UKKY81900112.