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 0x0f5d5045d710dff56f448d0e33a1515346f8b11b937e6042508c838cf290265c. 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/de1ef78c-e6d9-4420-aa41-5df030acc5df.json and https://artists.proofprofile.net/proofs/artist/de1ef78c-e6d9-4420-aa41-5df030acc5df.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 0xbfa2a7308950e85fb66cf9fbbefa3414960796828685ed43f8cd940ca94b5701. 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/DEXN92276127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35d8d23096e215a696c3ae8d4d0b5465e834a9d352e73d6f0ab077dbfcc3691. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEXN92276227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcdeb9fc0042b0dccd39bbf3b5046d8389d21bab914758b269c1783438b80d4. 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/DEXN92276229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093edb4c00247a5c696d33ff5986d4ae8279d046ec86897b4d65fef5e7610757. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEXN92276213.
Kiss me in March: Dangerous Love [Kleinstadtliebe in Pinewood Bay, Band 3 (ungekürzt)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f9dc8ae6ecc0b5f8b26de8b847e6ab122a88a9cfa067abc2b8e88f0a84738b. 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/DEUE12469277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569274b45e69389fa94563dda8f8ca34a44820bfda91e8c25ef4112f300d60f0. 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/DEUE12469279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb874c78632eb2d8baaa2945e3632eff08cbe4d66e49c837e337df76de78433. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEUE12469280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2d40e96557e16275fe2d3e5b3e4061d4c25af56051931bcd4b1220906ab205. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/DEUE12469281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed4385afe725e458b5e44bb1dda68624a6dd39332de3503a48a5345a8555a33. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/DEUE12469285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c90b0696c017cf35b0650701938444c65936ff42ab42ddfe45cbbc330d7d722. 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/DEUE12469338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb77cefdbe5c0925d8ce5039f76fdcac568e65510ae87dc6ad988cc646e59586. 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/DEUE12469347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a75745b71b7991ddaed8720b22eb4fd7cd4e9c40e7258211a4da0955b0b446. 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/DEXN82469356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8582aa5200e12d992960dc702c957468b75383aae1201a6f5fb67e892b862dd. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/DEXN82469357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a4027344793ddb398c3e104ee269cece566a774317d8d879164ac75c5c28f0. 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/DEXN82469358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d989a542cb44fc5d99940c743d14a96a4c91905404c3141bd8664c9661f5598. 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/DEXN82469365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadab1ea7416054ce2e5922830577605249fd22657251244449a2f567974c6402. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEXN82469369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc258261a8f6fb1a5875fcc8a51cff960805b3b684bd6a19dbbf912867b509571. 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/DEXN82469388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb83a3d68c0bc53f4a0a7939f93ae8a44acd16357858875b906cf156b0fc78d. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/DEXN82469454.
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