1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x19f1fe5da75985cb13f8bc43aff0a246c5cf2419cc24bc1afdcd779546890d69. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa5bba4f-ced5-4025-99e3-1b5083642672.json and https://artists.proofprofile.net/proofs/artist/fa5bba4f-ced5-4025-99e3-1b5083642672.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 → block OTSBitcoinBlock must exist at that height 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 0xe37d622b76e6c9874f9e9ba0521cf92445cbfe63ead6c2fcc0d0bc1b1006a676. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNWX2080890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08907d5e51358f0a60e9cd4a250d5488de86044fda2f5b022c1943553c750203. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZNWX2080891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb1eac43eacedc4106d646e63606e17d1cf42ad4ba74a391893ece8601daba9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWX2080892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3428f4b81fe02a41d565405d5bbda8e503bf274e043fd3af8c3fbeb69428c48. 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/QZNWX2080893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca0795d9771d7a864dc33b0861d0ff07e2d169beeb322fad93c0ec34017d8ad. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNWX2080894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae3badd3562649a82a56aad2999fd25b2184ba88b30de68d8146d5b7de0d71e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZNWX2080895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa24499b99040bc05ef391e8f8714214eec32bbf254a5d7cfda0007b13c037c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZNWX2080896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe5eeb9ae4dcde794acbbd94d62c0848d10a7475b62a57b5fed1edd564a84d3. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZNWX2080897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1e1febc172f9ec5c3377f3e748bac126285a5ac4bf4d8b05d7336601c94db5. 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/QZNWX2080898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c16f362b1933b8a96f4329e30f0e18ce08d24d1d65ed9667977cd28ffdc40ce. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWX2080899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d4306581d2bad1714298bfcb922facc06c79072791b0b2e3c4468f403c61b1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZFZ62118352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8915acabbb7126871317ac39b3721afb09e6b4cb2d1927a7f03367eddfec49eb. 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/QZFZ62118364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ef1fe26321f515385a2baa3d886c204803c01a2a8802e944705355f8db14fc. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZFZ62120214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad5ff02fffe06ac6f8747e315a5851a77d6fd5e1042c463420e13cf84459100. 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/QZDA42186538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3361c0764526870c130c42b8b1fcf05eafe94671d3c30d447ae5f204ed7df244. 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/QZDA62143677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567da7106d365f091e61264fc81ecb8e94c99a006e35a6d464af05cc933f3f03. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZES72194536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baa486f63f7edd07dff69860c1ac941f0fb435d6ffdb4d18785e0b1c0bb3b98. 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/QZHN42102006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68106d23c9667208080a5e2ed5fcd014127e76342ff919892e3f605a985c9b62. 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/QZHN52116378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687b69af4bda7ce489f8f522195031271599c9fa1c67c05c3befae2bbeea430a. 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/QZDA82264231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba50d4dcc455f017a3a514b1128482b14970c9b54190fddbabb978b93119436. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZES62258254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9365a8a917b6f473f55c968b9ed6d88378a897d6b62d1c1f1bccf9816c9bee. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:57:42Z), 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/QZHN32249756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d44aec3bba7c9198b648fd62fb8a5b62b323510971f0fd0fbc4ed33ce02dcec. 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/QZNWX2219116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19422b9bf59423f2b0671535c23d42c5e6f83ca3db018d177b6247edd4affa62. 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/QZNWV2296529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65af0dc7d5dc269d1282ce52c283bbb79d012e21b96ee25b5efc0a8283972cdc. 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/QZHN62179513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17326f830c27a09ed28cd6503090795ee1633d1b757a349e5b2b269149efcdcb. 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/QZHN62178773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9c35b9a9f25bd26098d5f74157e3d4dcd75c6737b99d76e51b7ebbdf4701cb. 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/QZHN52114558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0332bef6b6d95f435c5303e49b8ef790cd00041178c6f531ace522c9f9fb488a. 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/QZHN42101955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b4a76466771a29442ad793402eb8c3a6c2ccd953a34d9464e518dea11cbc50. 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/QZES72197132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1333a7d88fa8fb1ee575c0970b7c840917f62e5009d0b3ff4a3a6347909e5199. 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/QZES72197456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4618bade153b7164174a8dbd39dffa800191389d5cddbc79bce645718f11144. 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/QZDA62145296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c5d6b524f11ab5086bf405d0b4aaff87ca8c9248af7987564939bb415aebf9. 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/QZDA42187074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7fd15bbfd0c3a8e484903c5ba461fa4ee8fa32be8e87157936f0337dfedd53. 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/QZFZ62118379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5917d8d28d0676aa8a7d175393879e5b58c715f2df61e720972bdcc73535f22f. 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/QZFZ62120337.