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 0xb4483c930609ccc9f5c43542d32ec906619d18721bbe169365ea54e3ec4eecf4. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c907eb8-15f8-4569-9d67-99e42da0cda4.json and https://artists.proofprofile.net/proofs/artist/0c907eb8-15f8-4569-9d67-99e42da0cda4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart! - Das Musical - Gesamtaufnahme Live
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 0x12f16a3800dac21b5c3f78c7d941edcfc490e7b3ea1bc0461cca70e3c5707933. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891502397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042614b9734eee4ee7294dbfe449cce86e8420d9d35d3edadf6a49c4b65bcf2d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891502391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469758bd7afbc87807b2d3bd6049cd6c01c9c4fce8290c36a33b87f86b014fa4. 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/ATM891502385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bed82a4efda8566da6564653dcc3497263fc00f67c9c3740d415a662b35e8a. 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/ATM891502364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68542edfabdc65c7dabe2f56f22e328554240b96aac2a44adb0058ae9ea1c4c1. 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/ATM891502408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f966c94017a8f45c0218bcb1bc5b7afb20f3f88576303af6d9f078eeb542183. 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/ATM891502384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84d473c1f893682dc81e4ba9bff47cc9aee34f9137a559300a833f560a7e94a. 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/ATM891502390.
Dich kennen heisst dich lieben (Reprise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1e6422056a17caa86700b3ff5c5b0565d5dd8cfe54f048b3f025d71706a6b1. 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/ATM891502393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd643d43d8f863804fa4eb9f9e158f6baac0098f1ea5cceb2e5e3c2a2b3a074f4. 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/ATM891502392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019cc5dcac74907f21823b16459285d687d38e77415cd2c0b49f22779ea61850. 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/ATM891502402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b62e35edc8e7e7a9486124a077e5e8374101dbf46b32da87103c3178c44e06d. 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/ATM891502405.
Elisabeth - Konzertante Aufführung - Open Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f63ecc32313c74bfa0ba2855ccf1de5a68153408c9673f53410b6308d5294c9. 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/ATM891903012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10944b79a8ae8005acc5ecfaa15ae21ae6406a2a5ad5497b7ee39a6abce0ddea. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ATM891602432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50d61ae17f160e552176f497595b0b8a98854ba6181726bf2baac9ad9f268d5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ATM891602439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282be5ca9e6d0155499520670b400b109e040d20a6161ce8aa70d2326c93c17a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ATM891602445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2759be6e15e3657a39b38d2fe3180e196db6018b980059845611ef62a5b00183. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ATM891602448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894029234dadcc20f10bc2623c3010a0cc9755be8c7b4d3b6f76b3fbb058e2b7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ATM891602456.