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 0x1221450f8031d2cba56da8e3ad34e3d17df2e4e7324d3818b95f004b56e3464d. 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/f5ceef8f-2544-4807-a2d4-933275050870.json and https://artists.proofprofile.net/proofs/artist/f5ceef8f-2544-4807-a2d4-933275050870.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 0xbff1f01b0c20ad916d3e6d00abef59d84eba5fef602032eedd020712884fe172. 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/FR2FD2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23130060aa8f851f5fd1c5cc7030a95d9804ea16fba6d0c57a5f741f84587260. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:43:29Z), 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/QMDA72229904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19873df52a77f09b81c9bc045c3e855b3106b766ba2826a1beb71a998e99691a. 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/QMDA72229903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b43db11e4361c60fa7eaf550aadf852d0a18945537d84030af03323adb0fa22. 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/QMDA72229906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b046bda8e4667714d9fde578bf94e605f8d57ea794596c3d82559840fbdfc01. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:04:30Z), 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/QMDA72229905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56bae552ffebefa820fbb7c0040233f404b6baa2bc4afecca5c5f6ffb429135. 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/QMDA72229902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19873df52a77f09b81c9bc045c3e855b3106b766ba2826a1beb71a998e99691a. 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/QMDA72229903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359a51cf60cc0c1703dca238a21a9bb7e436eb6a190b3b6643824f1b2cfcce42. 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/DEAE62200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54414e4850f94aa5667ccefae6236a7c708e01cccc4f35108976d738673eece. 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/QMDA72177105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab572ca211558c449e4a7305c96bba3335bf6fe560e82b1acf0fb321bd14762. 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/UKN6K2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9c074b34cabd8a52066623a5059373b5e1a48a721074598a8df2ee54d87ae8. 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/UKN6K2100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d140807003f256901617c7d4c91bdd692bfa7d8731d16e16ed717c3bb1ed54. 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/UKN6K2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcf836979bef9fb4b79a2818991692f82d3054ee28ece95588d3a5b0f5b6334. 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/UKN6K2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d35e2b7f58104aaccbf6661d5886aba09f63cc6d1dd7fb117fdcd708cdee712. 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/UKN6K2100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ce77ca9b301f50d7dab47fe5da97663cdcbddb96e966430f0a18e053491ee6. 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/DEPI82101164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97519dbadd043d96b73b8f7c0d5326361afb894678f56fb05ae619453583b2c3. 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/DEPI82101961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2e63a7babcc0c8e7515edc656845ae851be43d5de10cbc2637c3d3048ce092. 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/DEPI82101336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaeb8eb65e3077408a4b96ad9963d7e869cf8769d6e371f4560ed8945cf4d7c. 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/DEPI82010324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d3c25ec8ba530d2ecd4aa71e6b2ec76b5ab022f9a2cdd5fb68030faf1ac842. 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/DEPI82010325.