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 0x58303e01b2ed869cc49a21df73c089695eb6f1d9059b936dfc1a123cba6826e8. 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/00302443-bb6a-4014-9622-d004f16d5f85.json and https://artists.proofprofile.net/proofs/artist/00302443-bb6a-4014-9622-d004f16d5f85.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 0x980ab7a2bbe61b6b83cb23850ec22d79f10b2b773351489e47710227771b8197. 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/FR10S2403248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0914679972cf61ea5d39aad4ef2d76647d95a54451b2c28dd45975e6c6446f2. 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/DGA0H2388219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6453394a6bdb01a96d63ad059f036b3b2104dd0570716cc9658f5f271412b14. 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/DGA092371565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda58aa3e90cc26868af45f48ae2ad7d941515dc8c96c72f11a23fbc65780fec8. 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/DGA082375360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2af23b3746ecd6ca0be9ec4e5568418f39f8b58b7348a6ca70ef82514b8b95. 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/DGA082373888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e87fb7bbfb11dbc219ebd12192c636e4bcba596eb671d9b1e799481a8f88fd. 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/DGA072389081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5ed270ce05331b8d32caa8acbaa824dbda5e441c56c19b6e0e712b09b91ef6. 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/DGA072307714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35b58dd7f4ac26fd4ccda1c13e796bbefe244872b72f6d133c4b935549f8c8f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DGA052398443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb014d5f72a70c19af67585dd1d78c17ee446f61f652bb9070071d8077866f88c. 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/DGA052388246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77626333f9ed3d054099e85fd62f7f29c7d5f22356e4c458c5a08d4b63b79d71. 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/FRX452392866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c482951ff04ae3668c871d3bcd358f834f4e365d033a5181190beaab8e180cd. 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/HKG732140464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6342e124ba28844bf085b0986bd8841719d31ee49b7e31a7598d4b10252871de. 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/FR59R1855441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd859ca9ce55d25ecc815b05cd49a227992f31d3702702b16e6cd0a90d1b02d3d. 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/FR2X42153058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab9d7a726cf77e3483aa54e696672f5ea5962fa8ff06054ef6b0a6664278634. 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/DGA072148545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f6214ac1ca3b632440103652b08a33fd395f564c8eb6370dce44892405e35a. 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/ESA012500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5909db303909c4854bb68bbb4bd69af6b2bc7a2067f8afa047af96e386f35b65. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DGA0Q2409617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824474b3464c7b4e8afab2d1d0d017ea1c382adc688e94adaa268736838cb296. 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/ESA012493929.