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 0x07ca008ced005c636692b59f90d6a6c2baf0519de857b12d9edac873c1547a3c. 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/3a2d5c5e-4bbc-4ec3-940e-f8915697710f.json and https://artists.proofprofile.net/proofs/artist/3a2d5c5e-4bbc-4ec3-940e-f8915697710f.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 0x1feb259054212cd1fa0616d0e2ff2c6aed3fa1444df5aeb3229e9b006aff2c51. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ITA490100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc132ff942620265b53cc95282f99330ee4342a4947526689c3870007a81d696b. 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/ITA490100156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646834842c6cc4466eb2dc25570227b93efdd3d62f7c8198a650d62e6afb9ff6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITA490100158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399aa6644cba20e816673c47e746fb4c898136eba613a4d96ea414bf28d19f70. 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/ITUM71300546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01e55d9bf0ca061c2ddd6ec4bfc9260b5393ef97f35f5a616b03c0cd72f8b1e. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/ITUM71300544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8a45a2f954fd743b980ae6c1e42d4b73d8e10ead7464fd477fb6b8eb8c0845. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITUM71600760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb63918c8f9d557854856bb157b1657b7a5e788e3cbad6ddafa5fc0dbedc600. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ITUM71600765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78f621ac404acb422e88e2f2fa925078db9514f8601805d0493ea2f7ce9057a. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ITB002000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96facc0d4f1759cda106e0757b345f35a06ad130d5a24195b8881eb9eac91f8. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:27:52Z), 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/ITB002301718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d35fa8abaa32b0fb763f66ceee8754466e732e7282aa05bfb96e934b1655e86. 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/ITRSE2000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d35fa8abaa32b0fb763f66ceee8754466e732e7282aa05bfb96e934b1655e86. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ITRSE2000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115d9a4b736162975e75fd13f06bfcace2f5971a02cf908792cb18a12a7a960f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/IT7009608660.
Neffa E I Messaggeri Della Dopa (Remastered 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95e8362715192058c2b83161d21ed1507b6c6e5cbbf1aa7161e518eb1508d73. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72100217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115d9a4b736162975e75fd13f06bfcace2f5971a02cf908792cb18a12a7a960f. 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/IT7009608660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9488e77782bfbf6d2d4d18cc6d51d3002b23433cb0cdb3fafe48b1cd9ef369f2. 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/ITUM71200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53c483ccae33c7db562aa5c6cb94a818e2698b09f755e7ed5d0d705fbf38ef4. 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/ITB001700208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa023af2f6976922675093d52fd04b9ccfa40117b1c94e4c97d0a726d55ba66b6. 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/ITB001600762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115d9a4b736162975e75fd13f06bfcace2f5971a02cf908792cb18a12a7a960f. 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/IT7009608660.