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 0xc61e0af947ee29d1ff018afa66062b5ee3121e5ad7b55fed5e8f6d9e5ad64484. 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/a114fab8-578d-4bac-b2f3-19114f53f9c0.json and https://artists.proofprofile.net/proofs/artist/a114fab8-578d-4bac-b2f3-19114f53f9c0.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 0xcfdbfa664f39b8915acbcc39244f3a2a1ff02005498af99da89f915e06e639ff. 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/ESA012288218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc0c4b968bce62e7795f6512f1cb3c2557af6373e30c1322e34e337cff46b49. 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/BK4DA2326217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3087d0e21ca2c62acb55f6689221dded962277637b95059e3db3167bf1d5f2. 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/ESA092202666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af305b00d14a1efac9e195812f2bd9fbf571f751ea82a734e86cffca2d87c17. 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/QZNJV2460916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42b9c3f31f64d539e26fc24acde32b635c3da98881af29b19946c06cd66fa6b. 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/ES71G2407847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d98240ec5b34606ffcef7af41cd9de8aa6e4680b05fd72e1239b3f90fc5f504. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2337513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184a2c03f2c77fbdc0dd8460bbd3d90f2c44c398784a495bd3b675398a7b60fb. 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/ES71G2332051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43eb279e469be6ddca65b4b700d87d82c6b5c3d43adfc46ab0284f9f8c9d3ae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES64E2309929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca05ba91fc3a3b6e0cb73c1d66d3a7eccc7ee31b78a4ade0c5ee6eda1ed28593. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2319000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07427d52d8f2743aca80a1b954524d40d7210af94f664700beff323bcd8fd3d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2307037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac4ed32b0d5cbc69f68a28c7cb4ed81f4d7126e9bb7e36c32c235ac321e3a4f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2313414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8787fdb378e8f301f4cf00ec1ce938fb4a297b6e553852ac8704c933f5a2370. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES71G2300979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd3071c3a0dcea4c46d6bcd9a30a64af778fbaf10ea74fe874d899843adef06. 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/ESA092233093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9767e23fb0e2ef0971447fcc38c887ceef2b2db23572d9702ad4824c1ef6a2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2238155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765908e3243b81127f3b414c89fcfc1d97cc75eacebbb913e377c1f49e3a4896. 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/ES71G2224798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0dbda4a223f2df659d54955c8aa68f18c8ccbf5dab6eb3ed88e488d8409774. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESA092205757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b178111957046307f0b42d49caa5f6b8837e270ee77039f651351cd34c2f98. 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/ESA012219612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba48333008497829edd3a238ab0fdde6154f2360941709510e1b1230b76f1a40. 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/ES65E2100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a62cac4a3b2a9557bfcc0c1673b3b9b30cacfab074d0d232f271925b4205f4. 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/ES71G2150060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc74d059b5e3cfdf5d88eecbe57c54b98e6b7827d447a2695b701d8e867556d5. 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/ESA011573475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc917ac8c190a3991c5da55df8e9f19fac0c51bf7cd51e0f1f08583b7b970c453. 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/ESA011543281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d21a1aa17789a4abcb58859ccd593630b1062ed1fa378f2527ff6047a2b434f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92288799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1666a3c6a569bcd115a252e90a4591c39d46027ba3c83dc0238d49073019dfa2. 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/ESA011685587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1447848ed50933445b3e67cd674a60c5bbf4f4d941586ca13dcd3b2afb4f5d. 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/ESA011667901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e362f805286aff5e57913c5cf0c5efcebb745e885f2ad73a633f6c10dc8192. 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/ESA011657542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ac13258279e6fdde5825849315cb38bb36dcc72c21d42e8cdebcdf851243e5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMBZ92178365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f72d41b5375593abb5f2db4e5cfc72240977ab21c24d072dacc7c4f12cb87c8. 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/QM6P42169868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72a30ceccad99291411679d5c1c6db6a944e7e519faeaa4e26e1ffa6d89bfd0. 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/ESA012194102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb73447f1a23fffdd68fcd03eaba9c89b19487a899d0b3f3b89a96826d29665. 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/QM4TW2170106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ade04091ed129ec7c9e912a67c18f2084d7a25b650f01e52fccf9575607060b. 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/ES71G2103783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cc9788cb80e2c4c8e3a9d121636671e6c27b5069b7f6d4e82e751cada7aa65. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ22101370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318e1bd3d78b8ba04bd751abbcc8ca692c54d024013803b8c0fc476bf669e6f0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME2084750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034c5867a5c8b7c2492cc80be7bd87ea90f620dae3c4eb9b4d18492390a10ffa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6H2096650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f1d54ad272ec99ca9f595f73cf7bf067b83db9dfca78dec40fa0b916cfbf56. 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/ESA011864533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb764717d3f1fd270d67f0fbf08f7b99b41cea0d3e0bee5800495bb737fd4e44. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ESA011860594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf647b3e6774a5c63172823d77d90a720a0d2c587302922ce5440f4e43c2409d8. 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/QZHN92081431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb8499e9cad9bb8214fd254d85399c603fbb14b26e649139c2625d160b3b294. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZES82060484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecb7f02b859a8d89682046d9d9d7d18bdd84f1da3ba97f64cc74e9467cc84d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ52060509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d2dc35c7b805e57a333e7c3640098817c39a7a5f90d94398eed4e46926f565. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2132307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7147efa7f2dc8e14594e67c38a864a671584bac0ba10da63722b301f1a2d30b1. 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/ES71G2503074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8ebc1fd961930ab13718af00aa63a8c918c8de47598c27e858bfcaafebca1e. 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/BK4DA2502260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbd7a2eeab27762bcfa2ce9af05badb71a504eddd89b883199f991383c9e6eb. 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/QZW9K2479586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b78e2accec871abb2958a48040f27ab312caf87ea914a4999d8b1a301c613ac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9K2470194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30a3e377181395b650485df1c6aac943d4a4686f89f060628e0efe10c0a1b86. 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/QMDA62494947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a7686c6d7544cc683e5e3494e2fb863a5f99b1cc9232ffa07d0bff13a967e2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2424588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ec63dfd450a989e4c48eaad0f0331a036dd393983737c9c8f0a7c034f8612b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2424158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fbc56f876f2add0bc7f0384f6ba7fd20d5be08e8f1b021cea571b914f6bbf7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTPX2470590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4934aac8ee4453fc1ffee14ef0e8bd002c4e42c9d201795eebdecf28ab1e7b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2420441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3aa4681f9bf7b4df6a28c43370ca217a8fde23178914cc94f9cd7fd0e59f5a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2414445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee31c4c4194a802add8e7a17726c4ff5f39efc0169f4d11984eaeac59bd6b11. 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/BK4DA2318395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41286aa691f8dc3689de1899a3899147eeb36e5e4c9c817b8b04681f24a765ef. 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/BK4DA2315173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aa8c230c6c2dbe302e6f1f617d16fd7faf76a4956d811d04d5a072e0e9cd4b. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/ESA011941069.
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