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 0x4f60cd1b7ee92fd883bd9c7a2d39d0c4cc1e2fd2caec3a6f922a67279159af42. 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/9ee77d5a-b426-429a-8a13-b66c6609441e.json and https://artists.proofprofile.net/proofs/artist/9ee77d5a-b426-429a-8a13-b66c6609441e.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 0xd797006648b6624f4b9e8cae85c0c11fafbed3e4c0ccd785d4c9f4d9eb896f53. 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/TCACO1699608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190193557e8b6832b75c44680938d8e55feb804e65d0283638eb501cd078535. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:31:45Z), 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/TCACS1689105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c2dd7d877467c16e82509e34ad3c439fdb68ff1d11532408c116c440faad13. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:36:28Z), 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/TCACS1689114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b9a894bc0e113a40d6a9ce6d4bfc8c0f4c1c6b9a69cff1219971f0dd4ad17d. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCACS1689118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9098dde923ff9bdcf12426f3f768d728f56aee5b57d59ee5789925b5c3d0733. 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/QM6P41857676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe6f84473c24eadc4e39e8dfab6e5b20b025c93be6f441d8cab0becc40c473b. 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/QM6P41857677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b02bed58438e92ebe49ffdd17e107f9478ca253eee54d2dc26bfe8a9448ac29. 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/QM6P41857679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77193b2fc1ad5e36f893c3d35eeb823ee89a37728ce200dd26f1841ccebe77fe. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM6P41857680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb478e3829eac7bcb2a03ea13a714f51a3a1134990f2d0bdadafb78c5e59455fb. 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/QM6P41857681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011a39f3aa518503e975212a2998abcba5cf56abd59e6a3f4c85f1b3a07b4b13. 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/QM6P41910371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599f097710798cb979638020e68d3238a15f98ff5bd8b1ddef5894dfac6dc8ce. 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/QMBZ91938300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5e13d21deaa7fd10d2a02b0b35cf667ea242b638ef66aaa5dc4a6c70ce7b10. 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/TCACB1414544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4897324b361fb06459fe28d483a64ba1996927bd48aac5dd5c554d9985f84755. 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/QM6N22004932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff762821dd321bd2246e0c8ef5b7c511d0c63377e175358ed98161f8e25062d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMDA62144628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6582c0e9a49c053aef53225501e0012c3579d416e4f154a2d95b12a11864d89. 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/QZHZ52226959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66055ec37fe81b5793d3deadf0cb983219716a3129fcf06d2c592bbe70fb60b0. 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/QZTVM2210596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf210c9a3dbd897580bce88a34d55d385bf9e5d1743c7b6a8bf5d9a5b0e56188a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR10S2386988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef31a62c868caafe03502b219d4b76a4ed91416b695b018a5ed359d7c47cfc1f. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/FR59R2318533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f78d57eb6f067c3a6e4b335d57c8a07856c78983b4a6502e7847e94758db3b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FRX282355742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4b920bb14a101a0e28cc44f3a0464c332c47631f46b54a7689e565fd7a7a4e. 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/DGA052339534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f72f791b32a52cf6f13a0ae9a870115b4883fe311958154099046fbba1cd22. 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/DGA072425344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecb5642c36380bb779489ff5bd7150ea98d9bd4104b2d589edfba9ab4f5e6c8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:51:55Z), 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/FR2X42577790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf644785ce502d462bac69d366f06d1d94ebaaf8e77a14cd46278d95bd0051caf. 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/FR2X42577791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fa876131015cff6d8346ce91d6d580a84d64d1e26142a9afbcc012cad7a1b1. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/FR2X42577792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdd9ad58506ce402b697ef7ea73a5ab3a059b382405385b3c8fd10d2f89f5d6. 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/FR2X42577793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad5db4f32b94f2f5e10bc86bb84e130e7ec95537d77caf5d66701f011fa57ae. 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/FR2X42577794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1ad4b6c55adfddd57aa57ba2cef2ead89b2627411ac9cc6e7a19285dadd987. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:37Z), 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/FR2X42577796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbeca6d5e4a299d777cefe15dfc42c20eeee143340b454fc9dd0aea520722f1. 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/FR2X42577798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f055df3db48f7e6e61489f4428819662e878491d2b5210821be63b4c27565b. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/FR2X42577799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e939254da1810f4c537ccb577d9d26f4a48c7f67c20f532f5d7ad29e4f9059. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:27Z), 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/FR2X42577803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cd51433866ed1c743c14cec2a10dcb3e4d13c48f1d377308691c037e38e87e. 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/DGA052540181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b378e8ef1963b497cad266f32d6bfa021c9ad6fd07995889a7780f06fae9c26. 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/DGA062519572.