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 0x3f5487007452d4625e07d930e2b14bbe5e0651f6c1831228ce4fc753d7d17a99. 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/f82e24be-6f2b-42ba-b107-aa7ba2229d22.json and https://artists.proofprofile.net/proofs/artist/f82e24be-6f2b-42ba-b107-aa7ba2229d22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De Meischter Eder und sin Pumuckl, Vol. 4
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 0xf14a79e622aa6a7369f28c74fdb3c37f7c797a521a3e3915991207c60b7f70cc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80579829257bfa5a0f7bf63b533de9d0c3b44b8797982a6150d567917daed10a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5104f59cbec6b25cf2d913daaae966e2a1d569347ebea9c36c109714ddbb84d3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1624b5f2d74926a302edd49110622a18c44ae3b1e543d297389cbdd8d3871d0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201025.
KAUT, E.: Meischter Eder und sin Pumuckl (De), No. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2959f53ead0ca2c51a1b2f4678bf74f28bf7b88e35b72c24f4fe6e55fd1e4d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a99fadb31f71b1589760b9ee24c059a9d6ef0b7e438c6d95c0e4e7d6e965c5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046ebccba888c4f83e18ed85a61ab4550199bca2c8452ba6296368724173af1b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cc683d8c036b53ea608c907608d93f9f7ea586f1fd12711150ceaa00f48d79. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43062df24b5993774f09254e6fc0b3211f9ba3340b3643005a07d14ed982f040. 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/CH0042201029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4033435936620a5d692afda6f6015a8705ebc7551f42328c69bfbfacaab3692d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42d0fb011db1e97e49fb59d801f7e5d1a9137d601062c90fd19f57603a04685. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13c542a0418421b334155ac8c1529bdbb8b657f0cc12228a73ab8c4f07a7e59. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7fe89b36e48169e7e700129e1ddf3e20d5dc7be7e8287cb88bcc3bb010d645. 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/CH0042201187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fd301e663026fac33250d98c5144a31a2a4ca14fbbe0368e31223f587f3a67. 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/CH0042201188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2d707c24931197fca21ebb01c5f66198e5602fa2d2588dec5b6e48d496e4a4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6487c65de80b6c7ea4d0d8d9bae219e211b094765e9a6431cde27240f4bf5ec7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb930dd0f240a1564c513e4ffb3275da6c1449440697a2e2eb8194372f12f93. 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/CH0042201191.
Die Zauberorgel (Arr. K. Hacker): Ouverture
Unterhaltungorchester des Schweizer Radios
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486d46be02be34a3c53ff90023c5c53d67499ec4c7b8a839257300ce0180b155. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/CH0040601290.
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
Die Zauberorgel (Arr. K. Hacker): Fridolins Chubelimaa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1397519d375d9761736799f266f5191ee37a464a87190221558fc71dff56a4ce. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/CH0040601300.
Die Zauberorgel (Arr. K. Hacker): Judihuii, wann mir de Chlutter hand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3995be45e21fd6df4e7d40c3cb78b33e8cc512b4e1ff886b929d66ac686059. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/CH0040601310.