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 0x36d3e266c0d04b4b0f278f894f970f8583fb08a1c2c9bdad82b69f4bb88f3770. 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/150d2ece-c456-49c9-9b7a-3051d0f8beac.json and https://artists.proofprofile.net/proofs/artist/150d2ece-c456-49c9-9b7a-3051d0f8beac.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 0x91f177609f2e68ab3462526347054fc893a8cafa7987f69dd5659db2a083b104. 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/QZES52355903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf32a7e6f583d82f1f0aa03294614c23903d1e2bd9d6e3413bc4e3934e3052c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES52355911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507780eefc05e3f7355addf54de2e5d535bdd7f52d358380f63a0ab05b5881e7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES52355917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109fb803fea6362645a50c1d244f5b2a496d65c3b5eaeb69c34cbc07a622c26e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZES52355904.
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 0xbd3b080b6c59c41f6eccb98715516a27271f3a6fbeae83683891e82bfd9c76da. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZES52355915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1e7b3cc7dde520bfcedee16b080b2ca2f06c79d7da1ed0ba8f91fe4256d190. 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/QZDA81865777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60afe724539dd24741baf8e6649bf0194b4eec0810ab3deb8b3305602d8e9186. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA81865778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f337074dda10446c581bbbc2517c8be2cdf9588447ac174d515f4a9ba1e64b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZDA81865779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596d649101ee4ee9ad58079f8fab85dcba287b6b20cde4810931821f4a366acc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA81865782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e92b13056d3e0f18d93badc2a700732051379c939e8932b404acf609d95a48. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZDA81865781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c71b8c5ade8f908c1acd8c9838f84d2c54550878215ee3044660528988dce0. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZDA81865783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f4707428b2bb1357e2c868d095c2d58c3944e5c7ab0c2e3d9ddcf65b3e3db4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLZJ1614673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb71f16db589451b1a56ce03126d6c53aa276a34aac667f58cdff0b2544bd94. 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/TCACD1572106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e122461b2ba7c84cc8d828c2ecd3f6bfc32ff801feb72c02036cd8dac9ad601. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACD1572108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca23d626dd15b01b4c68fb1c5a646cc72c54452ae79c6b1db15cc5cb56ccb1b. 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/TCACD1572110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc7738ee5fa512431bbc95f8f6271926ae0d3cbc264591a9ca63c5387382bc8. 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/TCACD1572111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715acce24410ca62553b0f081ac8f6392112237adf70888d62ba3ae11cb30117. 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/TCACD1572113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13773cf956c84c95a6ad9e40f805ea8288ff40b99b4632fe007d0aa967faea8f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCACD1572118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6e8417f794333643078c1d9091da2c0bf44c42d31769a23e2211c5ef9ce505. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/TCACD1572115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec9f0d11292ee08098ac5fb425718bc93ca3f8295b4ce2bf8b2092fbffd6c4d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCACD1572120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4099152928ebce071920d33c66a7534a1b0e4c944a0cb04dfa387a254fae332. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFJ2381815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a28929e700220038b2dad0ba58a120a4667c5a1f2e0203e6f689a7a6190129. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTB92387630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71da8f801e014272dbf8a025bbdba6bd9af3c4e407adfc34c31959243a6384e. 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/QZNWU2257383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08c8fcd4b3d527365c38a665570b6e3aaf952f4d9361ab9b272591efe18fe70. 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/GB6LY1600988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aae527ec9eb0a22a07f80ff4429b813121334dcb8dc88493f65950a82d7946. 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/USYBL2200539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cfd1cc94cab39cc367c58a5e4efde0fa62b742b295bb193b11bd2473d11145. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDA72214921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49fb5ca7763bfc97ad6cb82eef391eff48c7c6899bbb1ca418b05df5acdd9a1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUYG1352120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bedb9ee5a197790c245cd7aa417f585b59d498736b5e046a4008bcefa2223a. 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/QZHRC1900441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b3b1fd666dddae24dccc5608e40ef9e71b0324e4bae4b84d7b59e02b5e7059. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA52054632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607e6fb4f6904c5f808e572773852b62f730aa83545e5893aadc5b2aa60c69d9. 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/QM6P42084192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fd16651d74e8a0b0949e381f1dcf9964313a3e78d0da4f355086355b2ad126. 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/USZ4V1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42bd451e98c295e487e486cf689a296e5bb3fc09da41eb6ded62c25a2c8eaed. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ8LD1922491.
Ho For It (feat. TT The Artist, Dreezy & Cam & China)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cb9dbdd27899ad55df11228b043ce405b5580695aa493f80100208b2535e0b. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USRC11803022.