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 0xbbb54574f07480d41943678a81db7c23956d7b3632465d6d702d662c9d8285a0. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc219849-2930-403c-aef1-23ef56e05b61.json and https://artists.proofprofile.net/proofs/artist/fc219849-2930-403c-aef1-23ef56e05b61.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 0xba1edfaae899b0abaa0ddb131eda26df7e68fa63b5b89d19661b1b4502356511. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITI021600275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c825cb7c70a6a2b9f279223fe4d35f136955d196f2f29aaede7bca3956232f0. 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/ITI021600280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc3cd61ed8cc7dbbbed04bf8266d2ee9a76f7932da97ec63ce506763fa8d39e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ITI021600274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecb47d8bebb4fad41334b93ff874d9f2fac4353a9a60a42d6045333c7945f60. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/ITI021600277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d2e5a123922b350620dd176c4e83e5d1ccef596365b333078caf8cb05efed2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ITI021600281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876b27887aa557fc50a6838655033d2b54f0a5d9880b2fef1d2e8b5ce64437a2. 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/DEBL60601756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473b180242131f90ea9c8666b20fa7ac37b266ba79ef4d81fe926d6487e56de0. 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/DEBL60601757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79f548d020f04b172cb7fddcf787930b6bcd4f7a9a88576bded23b73e91dbc7. 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/DEBL60601759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb84274f4433c63f893a978811c6e15a7ccdc53a0aeec08233be993254bc8ef. 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/DEBL60601762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f903aaaf350f3a12bac3682e00224a0ce54afa53a438b2e06e9e2f99824c008. 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/DEBL60601764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7839c29422e4a9fa8fb91e94b0a7bd196ad868066b0ba2e123df07375d2b6c. 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/DEBL60601765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05b6df1b2979bb5acab382adc0305d28b879d8b0acdb721ccfaab165b06765d. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEBL60601754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377d81b3f7f837a412a0dbdcc9bd75851ac7ba2cd7d73ed3c34e5a0fb2030693. 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/DEBL60601758.