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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e55201604d193ec2fde76248bdfb9a2253bf9361048f5480d99e28e3b42a14e. 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/b13f476e-42e4-4519-9892-ac688a301cb5.json and https://artists.proofprofile.net/proofs/artist/b13f476e-42e4-4519-9892-ac688a301cb5.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77b052760668addfc26d8c8fb33b0dcb54aa2c26ff0e869e4da34e4f4049f95. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CABV10800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a8ea5ab3ef8cfabf27daf43faa90f19344ae5f6de267e5f386dcc003eff3ec. 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/CABV10800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47669d0d9d25faf65dab5263cc45e1cf3d85f13521c4214f7c96815a8a5b481d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/CABU10700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58233de79ef99a5a58b63f811585b4aa0b7aa26314e110ac22f1d012b40f1573. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CA8PF1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca89e55a3ca0432efc5644f2024e31ee969fe1adc37d84d2c974a2b4788ada8b. 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/CA8PF1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d73405dc120cfb8f92e258129dd5b666c3bf9befdc6af8dc323d2767c52fc43. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/CA8PF1520001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6b0fdbf4bddae8a0d7445873aadbe72734b3fd3101d9d21fe516734c8359ca. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/CA8PF1520004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf186b810e03247f203317167b8706947c7ff982f426671367c892ef7e2ad754a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CA8PF1520003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e798742d6511ccd7230ca7cdf3db643ec0d8f0a6951ce8ce300355b0ffc518c. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/TCABU1428163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cdbd08129f8ff698d2541ece6e73f448df571929563e0a4c8c3cdcfd0c9c3a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GB9TP2001232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48d99af207d1f43fad04c0289499f04338eb6297c95a428ae924485a6f56a05. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEY212145202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fa5f7fa5c88bcfbd071947967d3b5f929967a6672105c0060e96e6a52320db. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEY212145208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92e2aff12a2bba549c7caa659251da41d85909055d96e803cf349343a2e8c36. 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/DEY212145701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92e2aff12a2bba549c7caa659251da41d85909055d96e803cf349343a2e8c36. 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/DEY212145701.
Bottle of Chianti, Cheese and Charcuterie Board
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd16e5a0bb373c2e2ff287e5efeab09235c78cbb2b7365b5ae2e41b9107dfb6. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/DEY212558106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b239b9469be4d02a05921810381ea8ad7fb6b12cc8270d94169a6e6812e63df. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DEY212558104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15ab6697b3cfa3fc0a5984bd912ea71247ddb78ae0c2f97042656981b2cf304. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/DEY212558102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b239b9469be4d02a05921810381ea8ad7fb6b12cc8270d94169a6e6812e63df. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/DEY212558104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd68d3c73d2503a40989a9ec47763377a5c89a0572233bee9dde0fedc15b893. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEY212558105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd16e5a0bb373c2e2ff287e5efeab09235c78cbb2b7365b5ae2e41b9107dfb6. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/DEY212558106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd0a6b4b6e1dfe464ab84deca288ccc37624efab591d8eef6a626cedb00d34e. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DEY212558108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bc48995b4530228f53d0f270c21bc8d68f84d91ebefb3ef05356180205dd12. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DEY212558109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2b5d0624663b9a2ef92ed3443f41dbff6a8a2a2ac42883abbbca2eec4d0952. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/DEY212558110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b37a742f90c333324c2aaf647b0022b7e25096861f2954b644044adc287551. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEY212558111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322d7f3e0bccfb1e65e83b83baec50b1934c923470f1a3d65df94c065c5b66ac. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/DEY212558101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15ab6697b3cfa3fc0a5984bd912ea71247ddb78ae0c2f97042656981b2cf304. 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/DEY212558102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a45edbe3c98a4ae0af841abc2b81db74e27dd94a2aa091fe7f654a58353f46. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEY212558103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b239b9469be4d02a05921810381ea8ad7fb6b12cc8270d94169a6e6812e63df. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEY212558104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd68d3c73d2503a40989a9ec47763377a5c89a0572233bee9dde0fedc15b893. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEY212558105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd16e5a0bb373c2e2ff287e5efeab09235c78cbb2b7365b5ae2e41b9107dfb6. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/DEY212558106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa844b0efb237617303b9f5b7932c2d21ebdc3d3ab1a80fd3f9da85b98218bcff. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEY212558107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd0a6b4b6e1dfe464ab84deca288ccc37624efab591d8eef6a626cedb00d34e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEY212558108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bc48995b4530228f53d0f270c21bc8d68f84d91ebefb3ef05356180205dd12. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEY212558109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2b5d0624663b9a2ef92ed3443f41dbff6a8a2a2ac42883abbbca2eec4d0952. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/DEY212558110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b37a742f90c333324c2aaf647b0022b7e25096861f2954b644044adc287551. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEY212558111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f17b303baff4f60a7f81b49932d7e78267b2226044a4bd8b29231b29e6ba92. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/USL4Q2564549.