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 0xbb66dffac005fb78d4c332927c724609649901ae80df3c9844396587ac8818a3. 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/dde7249b-a863-4a10-9a62-f265720d809f.json and https://artists.proofprofile.net/proofs/artist/dde7249b-a863-4a10-9a62-f265720d809f.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 0xe29383ec3dc8259f5b8d4a13df33d4a8280fc32cf7acbca0c509fbcba584de0b. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:46:21Z), 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/QM6DC1727845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a091f39bfb0a7d241665cd72a189bacbdf23f66e7946e70590517ad937ea96d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/US7VG2140719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c483c3409cf499fb8cf30c7fd25c4a5a5d70ea2a58da1cd3adfbfb31e75cd3d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USDXS1802084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa7b99294f2b9bd17f61e7dbaeb080fda71347bb1f95865ad444569e12fb5dd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDXS1802085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd300bed114c495e86ed268c5cd6907e5f0340744d9e16c7f309bda62a3535b49. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USDXS1802087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019b610f842bbc4d74e3b4856674c5cefc193e1a2e99a3f05f26a5aadc284f9d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDXS1802088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af332b011801fd226592c62ad00306a003f0420dc85b0c70cdde364318f577a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDXS1802092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc341c9471429127aaae7a2d87b8b053825c4dc7b10b0f861eed6ddd94ee60fd1. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/US3DF1844035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aee97f8a51072f27bddc88e5b59fe015c76eec17ffa30d454f8f70f29a5ba2a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:00:56Z), 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/US3DF1844037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc471dc277bcc478b5067ce0e73238f01ef5839320610b80afbb0a661184119bd. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US3DF1844038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d0b6a652effd6f289283f3b585b95af900f794d57b407524276749a2c794ee. 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/US3DF1844041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf049c1e896124f8050dd41be5e3e798f751812a6ec8f18f910c4ff96471fba. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/US3DF1844042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1f70ffd5e5313baba3283b47f09f7c39506758e6deeccc1dd462b2c10b56ec. 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/US3DF1844045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dbc3af86670480d75c0d3e9236c84d1591ff13a16bec46caba333547b05bf5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CA5KR1951638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84842120d5a69eac2918a7c962240710301c4532880401f0c16fb20c1f7dedac. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/CA5KR1951640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebb40f6edf39f8dd7cd0355d72437e8c5f3999a2d2fedd2ca7ed299560cbf1c. 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/CA5KR1951644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d1e55aa8477604ffff5e37d269f0d1fe59659656b8194868cdd614bea1c327. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:34:33Z), 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/USDXS2005401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abc68822aad11b14aeae678bb2744fc728a8d79e4ce02fe3b2dd15d8dc49522. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/USDXS2005404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f09c07393e6a75ed6a5dd564d18dff2fb89f1048561c8f2f314ea066259ec9. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:41:08Z), 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/USDXS2005403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2682cac2866752c8ac64a348a1946a6be58928ade009b297d06d15c5ebf490b. 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/USDXS2005411.