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 0xbd406827af5f550f74409ca5d8693307ba7d3dd39f78bb0a6d303bc91ef368f5. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e782ce95-a6b2-4d82-aa75-324d132d86b1.json and https://artists.proofprofile.net/proofs/artist/e782ce95-a6b2-4d82-aa75-324d132d86b1.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 0xb07cb612d2abda12280fec7bc517c0900eed1d0574c9b8d563cc65fd1717d22f. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:01:22Z), 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/TCAHE2318121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5467ca3123af1fec70f3193b999a8c2ae92cefcb2b2ee05337963cb47e6bfdeb. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAHE2318125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fb33c61d62995ec9275a2164d5ea984cd42742cb67dcdbf3981fa51f438cf3. 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/TCAHE2318132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d549b7cdff55cc9682e5c7f740e527cbbc781a4987a8b7b590fa70bf79d967b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:26:11Z), 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/TCAHE2318142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97067058990b335c7e901fbe24c79c2f9299ce7988af8756a64f50958a3c709a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAHE2318147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e729cffe63a5131683ad45e43ae94adb4017b62eff1c83114a00503ddedfd2. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:05:41Z), 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/TCAHE2318155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581d4175e388bd4ca0fe667cd9cb7cc6cd2babf9e94f82cb36e660d86d68cc33. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:56:03Z), 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/TCAHE2318162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dcd931b7508af2078cb295f055afbbf5816962fa782b7604e4504427b160e2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:47:44Z), 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/TCAHE2318168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561d34cadde85c6ff9e2943cb351b89277070d892d4b046deeff1de7d0ef1f3a. 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/TCAHE2318175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6e1d3a4c3b21fe255d6365efc3bab1762cb096cba30974997fab154ca45a70. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:24:45Z), 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/TCAHE2318179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9f2a7c546a103ae0113d069b98692b43529931a9d3c9dfe69bfa97d847014f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAHE2318191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62d4f96f5cfe36283c67b694937b6d53e4dd7df77b888c6892349d85116763e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TCAHM2391059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44b9e9030d88f9d3a3f25cb720dab98748274381ec34df99e5b091185457d0b. 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/TCAHM2391078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d4374ae1a7461c189e050577a77cd3f42aa0d7cb9f4af829c37677c88a7069. 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/TCAHM2391020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172bfaed617d182c08600c288d493767c6b4e1b54e62b5e376ded842d8a3afee. 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/TCAHZ2490895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c4dad2df8e0400da71f3821178847e5f7a7fdfab05801060b1b49ad308d809. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAIR2402716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb88f5f32cb8df1ae8886bc87995b09bc8719a5d2c67bcfb6ca6cb86de88652. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAIR2402733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9004c937abbb639ec8cbfaf0c6a306572d73faa013a3af2586f1f62fa9ff61b7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAIR2402736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6103a0458c5cfa717a690a482996c603862192e118b874da041c241b3256aa. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/TCAIQ2402743.