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 0x400266e3bfce5efd41dad5da56b688a8fd6e476e6a56e6fb8f3892aa46c185b9. 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/39edc1e4-f25d-461d-9884-8032cd221b60.json and https://artists.proofprofile.net/proofs/artist/39edc1e4-f25d-461d-9884-8032cd221b60.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 0x07666789804559a241877a1da2da5c1ee5da3035615a51f2a5996498bbf6a6fa. 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/QZK6H2325283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a2833dcae726eb18f985d4b877e594bc48e6f37f256c1eaabd01f1195249e3. Chain 2 (Bitcoin): anchored in block 957674 (2026-07-12T07:50:41Z), 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/QZNWV2378593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a49bcea2552745577a3103860b87a234f406d4f8b3955e2975423142fc401c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZNWV2378597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04ba5139d92b68a34ae45f246c7ee5a33c817dbe294d26e0e8ae1da0ced9449. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWV2378598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09493fd6a6cdb49d4f146e4a608c3e1c5f67cbc795804504078299e6085f6c46. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZNWV2378599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bfaccaee541a74160c1b261066cfcdf5238b2a9e66e35800da4b61289e1c97. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZNWV2378600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a88592073130a7c31bdf12e63a0d2d410c122904090fca6aefaf7dedc69d00e. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:47:49Z), 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/QZNWV2378601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e0e293c242ead703713a6b1452423f6b96c0c06cf8284297f9d9b4bf89e8db. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNWV2378603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde40fd5ddddfbebedcc70c26f6cff673b3da184a2d0adb44ae952d04ba73068d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZRP42363711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f522829755ecf823bf8d003fa8bfb078e766626648e43af22268e52e599b7e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTBF2300231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dddb293f345571af4799c8a021445d261b0b782d6276571ba0e4f3fcb616977. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZWFL2311566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee5f4fb3f626ea369168b6387fda50694af523f60d81461af815f1f998dec94. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:02Z), 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/QZWFL2311567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1035a9dfd7f5da6ab3c6b394aa927fd5ec32104723dba2e69776b8a2370c50a8. 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/QZFYX2435891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968bffb8faa766a05d9bfb25efb5eb0caaa3e200d1fb485c09f1973093215bc6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFYY2454761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c3075ded66bb599e4fe07cfc20d2377ce46e8f735712377c8fc3a1b7d6cf4c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFYY2450866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe5a5b46c400caad6c6e119c85d650cad23f46b4a5bb27bad3796d2beb75bc9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFYY2450868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ed3ed9bcaa24f0a21c725a34db1c31616ac0d413a926ff94b930f37346603c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:38:23Z), 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/QZFZ72400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441dd8effe7cb32187a9e6e1af4c9de4b2cb3793eb48d55185aa269c82b67d87. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:28:00Z), 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/QZFZ72402113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc1c61b71b8be89836ac963412155d713bfb7ed47d8f4711ab80f975fe1302c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:17Z), 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/QZFZ72402117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2226f851d993f9c80e331de30b7bebcdb9c64b89abb55247a5f4e3fc3aad1500. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZES72408275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ed4fde09006b2a3dbf92ae9e8d82856a379c24af0833ab2def590618a0abec. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZES72431259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd914ce7de3e992c35209f52710c9cb09624f75473861a2f9d10fc502ad1fd3b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:45Z), 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/QZES72433085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fd748238dc08992200672ae5a402d29bd8a008f6060cd65bcfbf8292d1697d. 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/QZHN32463801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4536fd8be991450e8138780a627b433f10c52081d0b8a6e17a79feaa0d18c2c6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN32463804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e25f99b0af85b42a5ac68afa53429c35fad4fcbfb3b8bd56ac5c6609a048f9. 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/QZHN32463806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64d166f228509d239248955c6270d24445aabe26a74ddcc9fcbf72fc7014e2a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN32463807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e756127189b8b94b8b0cfc25798e56e05da8e8d7b0e4e06881f3e646219917. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:49Z), 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/QZMEP2451573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0409889113e70e6f13741d9e6b72f6b70de19e3c1849eff97bb9ceaeea715e73. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWZ2441991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f659f35df9d8c56cc43a27b33386d82466d2c339b4b0f2ff5acd8a9c7f417a4. 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/QZTAZ2459726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec34e31a7ace9963fc67f15d5906a4210785e5eb18481a8090135437c78b91c9. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QT3F42416695.