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 0xaf75a028340f417e920ba3efc94f0a5888643a8ebd51da5bc889cb8aa6f9a8fd. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9df4a53f-6397-494b-a94e-c1f8a4316b3b.json and https://artists.proofprofile.net/proofs/artist/9df4a53f-6397-494b-a94e-c1f8a4316b3b.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 0x711dc6688e7390b82b9d8cb08c219dc6233dbbadb43f8e0a9d27f46933e3456a. 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/QZMER2324702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29efec683e2797824874d0d40a9ac67db11998d6e7c97968ddbb6767dda9a02. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWQ2388210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3152a689645962b05ffe33cc24eca095bd8b4f699c0af858f1326a149b11100. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:15Z), 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/QZNWR2325007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765465e334fcc2219a585728e23e79277f95c181042993f16efc2a1a8c30ff8d. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZNWT2326898.
Hknat Haji Delil Seliman Islam Zaxoyi Iro Buki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29d8ae108317858837f0703104a4a2888e6b983702082e46f4a9238189e2b2c. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZWFK2314052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794c5a5c26a4b6d7cdf41e5064af2cea37b770cbe5193eb2579f8fa8ed43e421. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTAT2388552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f35723324995433faace5cebd35c12cbb3c7202481efead0f26abc4b8c7f1d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZES92415304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacc95e4139f5d3b6aa7b6159718a8f354027b4173672553f345672eed01ae91. 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/QZNWQ2480842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fafab4f15060b58dec33af0e08592cbfeed97531cb516026d8bd51fa84ae77. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:06:22Z), 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/QZNWQ2477834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4034afd740b23e0b351fbdd403fad0e5b346e5255495f8df770b8c51455ed6bb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWQ2480840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa63adb064782c7cb26a758e78d1c5acedf4f2bc4416f44a977e00b7313cdc6. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:25:51Z), 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/QZNWQ2479472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcda34eb06f02e0924823519305a19232fbae601247d5715522d3c3aa29461d9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZNWQ2479471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5906bf1a239acbf39d98e3d184f227617fb80f92450dcddbbde16a206f6520a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:27Z), 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/QZNWQ2480858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47def2bac1acbb240dbc22fe7112e5bd078ba0063717323f55313b0d40df3457. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:40:26Z), 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/QZFZ32578038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe95e4eafc2622b38fa08ae2aee2099756ac414dcdfad970f1faf59484fe51ac. 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/QZES72535187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c6888162a527ddf12ba9087ef0016daea6e8426cadb53243ef2a883589934b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:22Z), 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/QZES72533291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fdef5cdf12a50b3e7a82271d1bd9390f653c520648a58231b7a3edc9c59650. 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/QZES72535190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2c0e56a931d6577e5c40bdf32b390af01b183e210ffafe5fe9e4eef0c3b087. 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/QZNWW2582128.