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 0x8283112427699d2ea0bf89808821cb35a396ceb16f28a9da3a5b5c8f4ea31b76. 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/525a3718-d371-485d-8802-fda0c654e3d6.json and https://artists.proofprofile.net/proofs/artist/525a3718-d371-485d-8802-fda0c654e3d6.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 0x754fbcd0d11efa7c8922bb0755ccda907b524c6ddaa3187dcfdbbcb49ff12e9c. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/ITI021900356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215c32bcb67e751c5487c39e4713e7ff1082dad988b0c422af347c1d2fb7545c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITI022000409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6908bf5ec61a1b84837f798ce3af315fe705f91b6c927e3c208f176fb9f65459. 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/ITI022000411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0108c796facc32ee31d43d603f173ebe100ff1694a7924f18137684696916aa2. 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/ITI022000413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8d499bb136da21eccddcbf8966dc4334bb9cd7e59a4f6d4af5d02279b8f104. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITI021500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb939916a8cedbad20ce90b52dd9bb87a1c3afff750cf70a8e92bd3e8d5bf7b2. 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/ITI021800735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3df857e7a33b1a6b897351ce61c49f6c50914bf2b7e6778aa51a3f6e0544b0. 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/ITI021800725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6263a06cb7d1225379f738e2245d6b0e1cf06796fbc40962b34ab26c2d841860. 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/ITI022000414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5c0be73960eb03f3b02039bcf078b66a1a2c92758837b3bf596dbb9568d4a1. 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/ITI022000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100375b58044c8605c244a10665e674846974651cedfae36808bc0cca7944d9a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITI021200447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c19bb117940c1fd63a1f9197c53bb97436aeaaaada418c8249fd49fd0ddd920. 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/ITI022000415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754fbcd0d11efa7c8922bb0755ccda907b524c6ddaa3187dcfdbbcb49ff12e9c. 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/ITI021900356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8d499bb136da21eccddcbf8966dc4334bb9cd7e59a4f6d4af5d02279b8f104. 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/ITI021500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754fbcd0d11efa7c8922bb0755ccda907b524c6ddaa3187dcfdbbcb49ff12e9c. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ITI021900356.
Italia 70 In Lounge (Italian Songs From The 70's In A Modern Lounge Treatment)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3df857e7a33b1a6b897351ce61c49f6c50914bf2b7e6778aa51a3f6e0544b0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITI021800725.
Bossa Italiana Vol.3 (Italian Songs In a Brazilian flavour)
50 Italian Standards Volume Cinque (Le più belle canzoni italiane in versione lounge chillout)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100375b58044c8605c244a10665e674846974651cedfae36808bc0cca7944d9a. 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/ITI021200447.
50 Italian Standards Volume Tre (Le più belle canzoni italiane in versione chillout)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6263a06cb7d1225379f738e2245d6b0e1cf06796fbc40962b34ab26c2d841860. 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/ITI022000414.