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 0xa9d4603ce30210a7d9eb911b33a9836c38c4f25d1a336105e2443140270792d8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e16cacb-38d9-4f28-b6c3-55bf512fc167.json and https://artists.proofprofile.net/proofs/artist/8e16cacb-38d9-4f28-b6c3-55bf512fc167.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52306c171e2a8f4516373073b7cedfe9a9dd75b88ec8f3f9834069fd91eec519. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEZ901800399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cec4ba33206dd3884e2dfe8ba7d59c2f77dfbf7b81b7589375756ee2437b08. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/DEZ901800400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4417978f84fecd57fe48beb56e9a1f6d4109af514507b8013dcac994c9ca378. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:28:20Z), 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/DEZ901800401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cdae6e98f2ec5da73b2aaf678765a133ded7156d44d828320f2d4e36c8f257. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEZ901800404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c52242391267886b1dfba56b5fbfb5c0cbdcb24f8b551af82a84dca4e69cbf4. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:30:07Z), 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/DEZ901800405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd351314b307806d1eff93796bdb486c1cedd88e296b4e0e232cef4186d60c728. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEZ901800407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8e8795f8366817b7cc016daf7c13513c71a30ff8f7b690a444136cb9b95227. 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/DEZ901800410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393a1e3634ae713fbb5c98b57ff920be33a83e588396131d6db0269781206f05. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/DEZ901901208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfcb5c26177a09661bff0a131c7ffcd24f50a26c332705aa10109f8c4e43f8e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:23Z), 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/DEZ901901209.
Keine Einigkeit um Recht und Freiheit (Special Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35b9b00705f6698f96d8cb445775bfb38dfe357f5ad5349dd6275fd395bd0f7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZ902000713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb2962d1bf760c3ae652f0ad3227e02bb65d9cddd196cc7f7f3acc6bd9c2e89. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DEZ902000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ec643a45892373b61b6b0a790330fb405c67457b371a5fb1f869ffb56e4429. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:50:42Z), 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/DEZ901901211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479b514a3a9d14eec88841f6090555ceda5fcc9da013b783ab17f56673790a9d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZ901901212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975fd9f64cf6d23893584d8a6ff26df8cf3741fff407363824130765df451a2a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEZ901901215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45de82a9f4821f551468ae548c770d6dff56f094fc235fae4368cf1c232bc813. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEZ901901221.
Astronaut (Originally Performed by Sido and Andreas Bourani)
Astronaut - Originally Performed by Sido and Andreas Bourani
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5346045dca62c4211740dcb08506ef5902614cb39cd2f8457ad46a4dfcec9e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEZ902100422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4b008c6ed1ca76542159b0904868bf9624806988530fd1ef3c5ed87a642038. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:32:03Z), 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/DEZ902100424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a14ff6fd78974b4a2219d4ffe79003d07f4068e25f48952876ab3e4cf459751. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DEZ902100480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5998a49d03684e19de183381366fe9da604add5ec61049b19baf822203edb70a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:12Z), 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/DEZ902100482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ec8be7523a66a4232388c7f2659cf0ee41cd66fc605715207bac2e620fad1a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEZ902100483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b4c7b1089b0913a1467c9228bda2378ce9728bfcb5194a14cf8a5164626576. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:46:20Z), 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/DEZ902100484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbbebe9bf7e18a61cbfc8b0647006573b1d921c6e210080f24420aa39501035. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEZ902100487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b4e5d8c24773edd080eee4630c8cec825d88c4bb9447fe563f9666d7baa7b1. 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/DEZ902100488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b1bfe880b6912a6f39c0040b0c3c0e06c8337f594510b8114a066a1eff74ad. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:05:48Z), 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/DEZ902100489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9a1c788053c2045d2b710407e795372e446e69b6c98c659f99e28198315d91. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DEPI82301257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fe395fedc81b2ef869ace995b90c0ca25e23582ef3c4e1354b8b5c4adce413. 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/DEPI82301259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294c4a2397a163915a39cb6f653fd410608ab1eb815a3e7d3212e35ec350771c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEPI82301260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb87c30ae88908dc8591f4cdaccaacd24a08867845642f8705b77d059dfa5dd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEPI82301261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a565ba41c3d44830ca680b828073bdbf9c2985baf10e4ec32d2e294d3fac9a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:57:57Z), 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/DEPI82301262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d0d636a6f568cea228427f5da1689f0ed5a8916ed33194eeddc0a009a1f0ec. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEPI82301266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011cebffba7dc78cad528eafb6074abf1fad5d7f1ba9bf64b31d7e129d045ddc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEPI82320593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5330833225eb93523f8e3a826a90fece209988006e331fa2927f44209631e2e. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/DEPI82325344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c20ad55b5db5810428949ad2bd1610d9215d944716d4197506a24178b2edc29. 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/DEPI82326457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c20ad55b5db5810428949ad2bd1610d9215d944716d4197506a24178b2edc29. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:38Z), 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/DEPI82326457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2d9814b988c5e01e397fdaa9c28d6e54537ca539e95f0e8116aa6e5168e65c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:10:42Z), 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/DEPI82400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeb42b296d3539f6e1dbc0e4bdd22d7c25a1360e61a845b1d07816fe708d481. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEPI82400021.