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 0xa267188227ce5c2d047f5aa911a25e8c3b8bfcd7da18a8c658091b6009cc21ee. 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/65de64bc-1cdb-4608-a225-8ddbc441c1e9.json and https://artists.proofprofile.net/proofs/artist/65de64bc-1cdb-4608-a225-8ddbc441c1e9.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 0x39cb61ca7f61c42e05e9099139a302a0c4ea530ab63995c6f261338155c65e34. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:12Z), 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/CH7811708570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d3f1a0a4710c7c3614618f3c916a57cc8c2622de85cc9a8be88ce3963d9fbe. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/CH7811502936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28209f531a66213ff80c80c228a9d1687021450e73fd6d4653010756b6b1479e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CH7811503019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0da2da4296c755462c6f6be9deb8f8ad927fb164f1f52119acff1ad1c4fc40. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:03:24Z), 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/CH7811503021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c10204ce50b55afb4b6b8a1ba000a45469843227c438aad39c493821b96fd7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CH7811501107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77144b73e5243de59f8a0bed0573b34c661cd9bb97b0ae2c988a0c0a6a487035. 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/CH7811820929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2409b30b442eb3b3afd796ba28465ceb58d7709820e60ffb491e3200adc95336. 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/CH7811928514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835432e0a65fd2eb9cba10f2d4fcf4b744d3a33139653a9146d9c874b2c611d4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH7812236647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d7bb5c916f4d8b50074424d457a3a740736e354e71f845245cd02ad39bb8f8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CH7812236650.
Graubünda 2022 (Bündnerstyle Festival Mix)
Graubünda 2022 - Bündnerstyle Festival Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5996ee95d50405990c246f7ceb906bf87c4fb87ff3b21736962de6729b6416. 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/CH7812237884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f8311a6830682d3bdfc33a589b1b563cea0f0d01c810fa73e00b4791e5d50a. 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/CH7812400117.
Graubünda 2022 (Timo Tetriz & Jack Dylan Remix)
Graubünda 2022 - Timo Tetriz & Jack Dylan Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e629142fbc089f27d418526b1727c4b3a7e86e888c96b4767282b9bd3aab22b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/CH7812419842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093a20ffbe6905f41953d163710fa15c9a6e7eb23d1a7ba2de73f58377a9ffe6. 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/CH7812423451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d985620a34aaebbda1a3d1319caffb612c2e6748ae76ad13860b20a911e7ec9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEHM82100014.
Mallorca da bin ich daheim - Orchester Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaef7a675f02bc5d7a8fdb55b7719299a94b0d4a376d7e2dd6950cb3e6b08155. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEHM81600787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95236550d5d1f938c1d2b9b2c5f953937aea8a64aed0c8334ec8bef74e2a1fed. 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/DEEQ81600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c966ccffcd506a46723cf6dc51fdba396723aa158de026ad88566d9c49483e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEEQ81500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d985620a34aaebbda1a3d1319caffb612c2e6748ae76ad13860b20a911e7ec9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEHM82100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c966ccffcd506a46723cf6dc51fdba396723aa158de026ad88566d9c49483e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEEQ81500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c966ccffcd506a46723cf6dc51fdba396723aa158de026ad88566d9c49483e. 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/DEEQ81500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f14eac1e523326ced043409ca00560f248a57d7aabbcb92f7581831161a97e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CH7812186852.
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