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 0x866a2ba06d1a87cf8ee40fa0093c563ff9fc21b6ceb54b5cc663c1310998d537. 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/4c0dd89a-b2cd-422b-a6e7-f5f11a33d3b0.json and https://artists.proofprofile.net/proofs/artist/4c0dd89a-b2cd-422b-a6e7-f5f11a33d3b0.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 0xdc1a3d5ec54dbf510c05cb9462c7f5ce53f329a870b32683965f5fed9581c4b9. 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/FR6V80695150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbccaa9d392198d47ea7576137a4b81cb4c2a511585cfbe3eda9ad63c2d704d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR6V81468982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77c66be59060bd75e2d09031126cb3e736efa4c94c7eb781f74e753e841663e. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:53:21Z), 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/FR59R1961355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2494a86a014c999e80e002a4296c98b84ff97ebaf3d28fa77c78b0489bdeef4e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FR2X41933376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f7b357d7337e73f485bacd542d8c8594df39ec8d79b2388ab20b2693bdcaa2. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR2X41933379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de10d97c2f1c2b3b9546f0174ca42b37cd05a2e41e19fca547114df7056a7f1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:02:38Z), 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/US3DF1545228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e672bff132040a0456d0570f90dcd2072309198060d59118d18d9a8da071cb. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR59R1981476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dac97648bd9ff7a1fb29d7ea10e5802d97f2d0906d4aa22069f9ec9e8af65bf. 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/FR59R1981477.
Onek Shadhona Pore (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3277d43a3ddc0b4de2f28ff930c0653c88d2f00da2c07b74b08a6acfbb08bfe0. 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/DGA062306068.
Amar Bangladesh (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4cea9cc2760325d1e901bddff76e2fe22656653760344f63ad494b2bb0ddc5. 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/FR6V81195330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e9f4ee9be640bc2589679ffb97ca076fe5d7c43250d94e9b96c24111626d32. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DGA052313086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97306ea141e7906b3a2dc3b64e2870be6537d4f6598f089c9bf9e26dcd91c942. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRX872333945.
Was müssen das für Bäume sein (Elefantensong) - Hitmix pur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220f54717a9bf3829cb8fc040eaef1608a75709703a37b5b19d119905e516365. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ521300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cafa89ef33295b99b3caaa63ae2a617b96234fb938ebb2aa89efb79fd69b398. 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/DEZ521500153.
Was müssen das für Bäume sein (Elefantensong)
Best of Kinder Fasching (Kinderfasching und Kinderkarneval Hits - Schlager Karneval Party für jecke Kids im Club)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7745df1c8e0f80f6cb1005beb3c44e170c7340182029bd37ab7bf6ba75e7124b. 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/DEZ521300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a558ab19cb4039b1834e548f94df4fe3d46c32fd77a28cc8faa9a8bae1f251. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:33:58Z), 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/DGA052335995.
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 0x1685812c6218784946df194c8b0c91bf8481ae0cba5876a961bef86f60eb7234. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR6V82456133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2756bf12d528429f4ae3043018215a1724e074292ebff61754864723c60ca6a2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DGA052313092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96b7bfcdb4ddcb88a5e87f33ff370fc47d772b6cb1cae5efacc80d747dea936. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DGA052335940.