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 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 0x4ff1127e796c465a5434717772792235d51dbf38eec9cf90dca3d76e552f408a. 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/5a012f2b-be9c-4921-9090-64454d17c393.json and https://artists.proofprofile.net/proofs/artist/5a012f2b-be9c-4921-9090-64454d17c393.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 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 0x014712c2120bfb4d7f96e05c0cc55b4b8d1e653b591e89ac0d1e80d545ff188b. 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/QMANG2211945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e722300d0f1d6541aa8b5a8c648b212ffe1d25cf728b26dd18347e81054d04. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QMANG2251549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328ef1a81a3552530f37bed58f92ec5789cd0544ef04341cb44572025757e61f. 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/US3DF2423818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aefd0ff99da60eb542538980cd1be4b076d619352482fb22dc57012208fb71. 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/SGB502459152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec8f5ac5e01b725a437a87e87cae76bb91439f21972832a824e40fb7383e8d8. 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/GXD7V2421382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6bdfaf0b418edd39b5bc2ada07d59062cced5d8b0bb2619ea9420c8270b094. 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/US23A1590611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6873dad55219b782c573e1fda15298a24e7b0a3616e6f3c3b7996d524e0609. 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/QZFZ72520186.
YO YA ESTUVE EN ESTOS CERROS FUNK - Slowed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf791281c51691c18d12f96d52e9c5e22a4e05dfcbda87ca2f07e8522e9ae6b42. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZFZ72520187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2afc18fbff056c64b3c2580fb75882445d0991c8a1e968b9775252384d5f329. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/GXBAV2597403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd91756bf1146b64861be36f31f282b6183c55689da5c8572c3989095058c44. 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/QZTAS2558281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f95cfb967475b042920eabe8f548483ae175b5e9ea62fcffd5e943b8e360508. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZTAS2558282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0281a4eb8c6b5b994be8a1ff650ae1e579097369892eaea7c95ba559574be28. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/FRX282566617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5a63d2211f376abf81e16e8976a4d315fc0401d37db8a903e3ca495ae2ec3a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FRX282566618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb99cc8b16bbae1bdcc37adb196e371fd4b607c342675e06ecbd59acb6e24959. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTAS2560864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a00fe0ea9388abb3ba8b2d8ec7c25ccb06795ac47f846deeee149fb5fd7446. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/BKSYK2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e4d9142355bf9c62c8e9df8d4bbfb2d3992c3e41cd6002339e855afe06da18. 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/QZTBE2570527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf254144caec26d995c9b276b4ff83f98335c25503498aa4fe273a3c61bb8efd9. 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/QZTBE2570528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d887d8ea27d7e62bba98f6bc91db76ced0dc5f20b51fc7b62cd18907485d712. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTBF2543095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2691d5e08a7db7169268a4eef36c4412d3d4f2898f04ffcef17b3d019d21635. 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/QZTBE2570531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3916a3295e9c0bb9e739652fb3c74569a4108d736d1cca0657c4ff80649aae80. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZWFK2542704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc387040518de9a52f0772dbde36969f78e12924b6df5bf02d32f3b6a3e991208. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFK2542705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0985e8a534051b342a3a104205b3b146b2af70a930e13458cdb24242c068c9e8. 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/QZTBE2570557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acca50c6bc7ec5cb82099acaf4732b6b7f7236532da7a71742d5760b18fd5d6. 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/QZWFR2506551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb494ad87398b1b84471ceef851510d6358f49bed70b050f5f0bb6dbda3c3ecee. 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/QZWFR2504496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc8cfa5961be87d412ebe93107fc552b2c88388378b9fb1e1eda188becba6fb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZWFX2513811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261296497c38acb949446ba04fef04255eb28b9faaf0c3f16871f0f21a89ec3b. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/QZWFX2513812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80199adf904100207ab37f8a262f5684f54bd54ace96466ab7966362a639ea6. 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/GXBAV2456284.