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 0x2cf3660df4e06b5c9e826c070e4f93e951854df491f376d434b6acef4161a30d. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87518580-ea33-477a-9d3d-6ad449fbdfc6.json and https://artists.proofprofile.net/proofs/artist/87518580-ea33-477a-9d3d-6ad449fbdfc6.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 0xbdb2c22c5b0a33a421b5a016c282aea2701016570f2f3f03e7ecf49e2a1bc740. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZHN72238343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29466fe96ca27d3a3fa1627e3c81314ef8cff27525e639b8996d7d3eaab131a5. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZHN72238344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6e525c559b8d1ef39b436f11978e88f8bcfb1537eb1456ef0743a89c8a220d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZHN82373055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0d49437d7825fce71d1990a4fc65f1370b6f89492c4d778c6a104225855db5. 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/QZHN82373059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0a31394b97562e6121831b1b2872f5c588a2218410e0f2708276d58a76f118. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/QZHN42500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e35006b242563a4c2942d38db48673246ee13b919e297ed1f9a147d54d2fc2. 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/QZHN32583005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5af137373c1af1384d2b9c9bb9d47b05940c4f87a55efdd81a808a1705a3915. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZHN32584631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bcf574ffa5d7b637d51ba05655e08463a72e5d70b527378f69328f8a3af5d8. 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/QZHN42503516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4879c422d62de0164492d0b6d4b40beedb5b0d297fbebe69ff527135e38803de. 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/QZHN32596888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cc0e79a875ab384dffd0f6fe5853c50d37b3b5071993600c0b55c4ccbd258a. 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/QZHN32587604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843fed4a0bf061b4bfb06baa5b8a24bf4827b7f670ed9c6c03439b09b2cd9c91. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZHN32597693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e2ff66f456f28ac744bc4e12627a25d21db45baf74bdae8d84742e73b77fc5. 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/QZHN32597694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0f53b4887eea076b47d6ecc87ad683ec03762837657f03bbd7b1883cf4a44b. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZHN42500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4c0848df24b75eeee6dfbdd5b07d2230e8937c72c07841de2dc1cb0f74f35e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZHN32597697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fa3eb971fe16100bfadfc32cd8b902d5f13b070a721d44d398638546557061. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZHN42500270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3493575d9f14bddddd923ad52fdd6938c2bd6ce1a8591b63d783145abe3b0bfe. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZHN42500271.
tell me something before you go to sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f770457db2dc8c26dde1440f43796749307bfd708887d165fc350764700a07. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZWFX2506609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbaabe9f1941e5eeb8a4368249fa59d527b20655b122cb0c805676162afdde26. 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/QZWFW2556982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b903c5389e3bb37584f551619a9a0c1ea99751db72bf487b2e8376bf458744. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZWFX2508150.