1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xef47cfbe2585434190d0cc497048c91f19937e67957eb58f1eb47e02b77e66fb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e34beffd-0f04-4687-b324-e73aa85420af.json and https://artists.proofprofile.net/proofs/artist/e34beffd-0f04-4687-b324-e73aa85420af.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 → block OTSBitcoinBlock must exist at that height 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 0x929167f972586b62e5601abec6e3eb6bbe383d1b0c7d1fb2766b85a4fbae7895. 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/AEA2M2295981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707839d2425d1f67f393a8a53505b6ad5a8fb48cd1586ea2fb730897de043728. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/AEA0Q2231683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107c813eded7500ef0184052dc0571c7e28f87bb121f90b64494eb613bde007d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/AEA0Q2279588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45275592047e2b7a0ae1aa126afa45d3ef8477af3b2d9f742243aec284d5ea8b. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:30:18Z), 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/AEA0D2236151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9d46b9a45b91a4cb158c05e331cd5767c7384f6f7b891608ee38c593792dc3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:53Z), 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/AEA0D2245118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51be9d9d03ea1345835b71f02b129d4c5813fbf2ff10f2dcd8640a5078b7e812. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:22:56Z), 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/QZW9M2294644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbd7e68ace917e46e67d33944465063a174f83c900e1f6b7b8ee9e1940c95ba. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:13Z), 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/RUA1H2315029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7029686da689ae3acaa65902e01f4cb621a8a46f5c2223000c28e8fc14dd48. 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/AEA2M2345824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b518ff69877db359175c6833a0399825ccb030aaed64fd0823eb2593a7d6ce5. 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/QZRP42396540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d99a19163178de1ad97566d097d055d1c5f197978ab189da2451a303f3d8a4. 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/QZRP42396539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47741a1e7b252e70ee509aebf4fee7ee1cf259206c6fdf07171466378911367. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZRP52363177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15cdb5ad31e63af7e032d8e932a4b3e3903f52bcba35a216728af567b86fb57. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ32413729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8094944ff1870490f8a0227b82338ea33273870f4029d92fafd40ca726dcdb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:59Z), 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/QZFZ62462499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80bbfcfdb58e009a647cc0ab2200c4eb59e359d03a6e7bb184f96915ae4d228. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZDA72453408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5f104c5ef12fdfc5eeb77f436db721288540af389f58b52fe5a475e1176432. 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/QZES92471203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454ce55619c0f8e71cb347e7ff9ded6e1e57ce1edc4dc2946bb5c9af3ee5a9b3. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/QZES92471320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e348bf88f36292d6770d6061e90778cd0d9fbb3abeeea877b6002186b888f9d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:39Z), 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/QZES92471463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c89a3df519dfeb66b3ec6ac0355e2a526522ce63486f76ba4c46735c95945b3. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZHN72419079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3594f8a59f89cb02b840775252232744d905725d3da2e4266a2dabc9be0d465. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:33:47Z), 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/QZHN82496963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248089f9adc5878af69f5b5a031e72a99fcfdbd561054f35edd51a37a6e91f5a. 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/QZHNA2469897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8883f4ba16582a0ac7c6ee095d6f16f10f7bd77d8447f96143a667c4f8a3a529. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZK6G2426491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9765c3c1d3a4951955cbe39100ff46e0bfa23143401bbbd1768c3c6f14096a. 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/QZNWR2411860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd341d391d31a0b40e6da56bce4928111a19fc3ae44cb07135dca3fedc7261b68. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZNWT2460192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b46304766bab1eb32bb922a2b13186e2742c6075df15aeb9946fbb594f33ab9. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/QZNWT2457032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97fca0aa03a975d798a7569fd2253de378153c202f06c256198aef2afd636e3. 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/QZNWT2455608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa571c0f7f4618a01964f511381c9c12dcf9c579ac47bef7409ccb78fe25d5ab. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:53:57Z), 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/QZTB72462774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba18dca8845cf9686744836d42abbc83b211608f75c3c07a7b0833fe25cb4832. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:23:54Z), 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/QZWFP2436524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d46f6230ec332c14d612dc376009ba983e40dea9d4d7fb6b7a12b1851345200. 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/QZZ7M2467999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d54930da3dcdd414f43a24c8648ca685ac476a992d8c50c378b31eff8978eb. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/QZFZ62586779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062bd5975155cc01e092e6fb41e8ea0dc0a31fb0f6759179fa3731f5629c2094. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZHN52554575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac64183ba413b9a62bdc0a61675a1fc29de5c3f0577ec552a55238ad3e6d3a1e. 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/QZWFL2587629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc28257962f993dd50b1e17b6e9ad6586ddc55d9c6f9e810ec5cf757e0fbe845. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTVM2544741.