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 0xe9194058c3eb37326092a706aa250731164ed17011ef5a939474338af599207d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54e27169-984c-47e4-b084-a22bf7aa0fe2.json and https://artists.proofprofile.net/proofs/artist/54e27169-984c-47e4-b084-a22bf7aa0fe2.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 0x377f7add01d37039cf3e36841076bce0731c78cb807e352f5e123fa544a5783e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GRS010000384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989a71be7032329bf91b13950794f02b04e2ba3b29ef83293e50cdb530d514a0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GRS010000387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f56741c1140511862ec7bddb913a4dcc9c8f5c46ba11560f3af917870cf30f1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GRS010000388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4c0fe0714cbcd7e230fcc40a0af6d6a99d3831ff0aa1eaee6964e337903408. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GRS010000393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee38b9b48516ddcf1571b9e9b7c62b6a472f78f63f2edb80ef485d2dd02a01bf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GRS010200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857aa11c43fe37dd3330e0781b1fc5c186c4722fa254e5c09a2453bcc409c46e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GRS010400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd8ea72bb1c7d5ea7f436da0ff4bbd2aa3a45383a0cd3051be337c7f0a13a5e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GRLE10500483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd8ea72bb1c7d5ea7f436da0ff4bbd2aa3a45383a0cd3051be337c7f0a13a5e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GRLE10500483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef424894dbc742006ce5eba9bb303b63daa15c23075662e3d280303dad7e8c89. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GRS010300563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8607dc11b1ffa8b42fd8cd2d1525253d27c5d5488186fedff7e34577a57809e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GRS010400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8c294717531f98476c98befe78c792a6fde9eaea336bfd76919ca720f90441. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GRS010300562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7942119310901cfb0e85e72436a87c0bf0b3ce0ee159fe47864c83d7de2bbf3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA371422508.