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 0xcfe95731c2e78a9cbc0dc0931b502b87d72985a3b54e4ec82d0d2f195a0f4062. 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/3403d406-4774-49dc-a46d-c072c29df991.json and https://artists.proofprofile.net/proofs/artist/3403d406-4774-49dc-a46d-c072c29df991.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 0x60a382e83b6865b8b19b56ba898592121a2d46a3a7eee1155224b28a7d960048. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AEA0Q1891800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa2df56cff296405d646e58c266227a92ca684e05d8bbfde18dc4570eba9b50. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/AEA0Q1891805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222deba7190f126e5d2eb41991a72fbd73c985cf8c403f39cd34537f734c8954. 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/AEA0Q1891807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a382e83b6865b8b19b56ba898592121a2d46a3a7eee1155224b28a7d960048. 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/AEA0Q1891800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2ad81bee9304ad5caaaa460056724e3ca139a3a86a18d0f00d5eab8b0b4871. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:28Z), 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/AEA0Q1891804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dcd9f37f857ef2210c6a9d12a478ea5aadfa8192c65fb4af552be829b12203. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/AEA0Q1908228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2352f5102f571b656d7712f91c7022c7a8850370de57ecf81705283b38dbbab8. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ESA011767019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4d4a5a19084f25a6caed62d4ca135ae12235a2c475291b9fbd8ca82afd0bc2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ESA011535018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376d043a20126507a85053ab91e758d0c16f36c707f1e9f7df03831716928e12. 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/ES64E2202078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6738ece1bd0ecb6faba0d8b7790f810a65065a12991778302d8330f76731e41. 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/ES64E2201616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2352f5102f571b656d7712f91c7022c7a8850370de57ecf81705283b38dbbab8. 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/ESA011767019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4d4a5a19084f25a6caed62d4ca135ae12235a2c475291b9fbd8ca82afd0bc2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ESA011535018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1523149626a0def422bf7c47dfb6365f0138ffb53a8a8a978031235d6f49ea07. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ES64E2205819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14627556aa0ed3f1452914dc5acd68172209818b9f4a1a4916904e26f684e30f. 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/ES64E2205817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6738ece1bd0ecb6faba0d8b7790f810a65065a12991778302d8330f76731e41. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ES64E2201616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2352f5102f571b656d7712f91c7022c7a8850370de57ecf81705283b38dbbab8. 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/ESA011767019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4d4a5a19084f25a6caed62d4ca135ae12235a2c475291b9fbd8ca82afd0bc2. 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/ESA011535018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6738ece1bd0ecb6faba0d8b7790f810a65065a12991778302d8330f76731e41. 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/ES64E2201616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cfbe4c47290fe9df029f5c0611f765862a4c7e5bfd42b17d62321b40d2eb28. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ES64E2304447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cfbe4c47290fe9df029f5c0611f765862a4c7e5bfd42b17d62321b40d2eb28. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES64E2304447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6866da4e76274664897fea9ced22c772f35943521a081d65537fc82ef1a448fc. 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/DGA0H2493418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41deece24a8d806722f52cf3429acd72483fcc66feee920c04df303d2314859. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:22:16Z), 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/DGA0P2476098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3732c9613731260b67e935346f3a72104772cb3abae1978e9b27267579530a59. 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/DGA0T2458840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b815f3b02ed4e63576f3f186714287cf793f5daee2567c9a550bcc46568b48. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR96X2552765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3001483ca200272c1b0f0aaaee9f301f57cdbd43334f1de00dbe00a201512c. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FR96X2552766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f11bb08428d8135d56e3b373936d6ed3b13991ca84eef9d67d6cec71130ca83. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR96X2500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b5875760febbadf8660a19acb6d8f4aec5f510e1b92737830caeec297b2166. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P42200312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fd145a140b08ec943f2a9e36e898a8b44708b8d755f3f5a46f651fc86b7de4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2458986.