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 0x4888c9de44e6264df3423a6c85359123301f5bfcecc293af7666fa356e5597c5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0cb1773-d697-4b4f-9c4a-a90c95632a64.json and https://artists.proofprofile.net/proofs/artist/e0cb1773-d697-4b4f-9c4a-a90c95632a64.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 0xfc79a87e26d9e5a286c28bc0b34418849d78d5876825cdfcfc77c51c48b8475f. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:26Z), 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/QZJG52178813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d62502578a6900d80226e22110b005965fe0b224bca7eb8c172c5df8cb7c8ac. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZJG52178816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3700a15d673fffb32bc6139c78701a14860e53b38a7235aa52028982ad7ba63a. 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/QZJG52178826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e0793771c25ed43b164933e081486bcfaed4304a7ddf57d0962e7618734edc. 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/QZK6J2220871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc9f81b82d82ebbd357408c852ba59148b079dc0175d56b0aff851765a52853. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6J2220873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d8aa15d10e1ee5e69554e593b4c34ab7e1db7abb9ed70eda6785dcb02ba668. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:51Z), 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/QZK6J2220874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03207eee238d562c280c536506fc258eff80c89560e79d86e8cb1e681b928f90. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:32Z), 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/QZTAS2271411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b260c9230d42156a49c2590f7cf0e81fd17e7a33236378c5e45695419880f1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZTAS2271412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863127bbfd97c3a3dbe2301bbb478889945a528cf6eb3c9f8ea183bbb8871950. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNWU2278332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac289a25d8b9bef1a3e1314a75eb5bc67543c4c6bf3699351917385ea4b2de20. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:01:17Z), 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/QZTB82255955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc4e2464716d0c02d4b3dd85b84dfa89275ef5683888481b022a2289f42cade. 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/QZTB82255956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6c1776d7af7705ce15a28ba0f1fe78525d49f1ab6b576d6be97c7201732327. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZTB82255957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11ee0cdef232d2db4b3487875e4aeed9c92a0ef330f42c3c0c0e8a616f3e3af. 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/QZTB82255963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab648cfd66ab2dfdf21f9c7c0e48bc7f9e5f2a7e7c7d5778a6c69e984dd7363. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA2P2336738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fd9bdc16ca1c479617a08b68ccc66d53e47e8c42ffe6216ffe383864febf95. 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/USA2P2340126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489e5a0856a9fdfcea3a81531589b5bde2464784ccb73c3dd52eac6b41070c7b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA2P2351763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab648cfd66ab2dfdf21f9c7c0e48bc7f9e5f2a7e7c7d5778a6c69e984dd7363. 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/USA2P2336738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcaef1d52f9cee2bbe1b28822976349ffdb999d0f243a4830e30b5a25c4f854. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:23Z), 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/USA2P2351765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d815e41aa953d8f2686c0d44f2a71a2c95b2116855db749256889cc88dd5018. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:24:58Z), 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/USA2P2421726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc201163cd2e941d6f6bec81f02a26c56418e2a8b81b51551d9c9487fd5677f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWY2468038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e14ecac249fd15beca1a4c35ec020def122fbeb2095a16cdea8b59236175641. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZZ7L2414635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a1dd35cfe87f06ebe3fda4480d9d4f91708d31cf05f0e0014e4e72d9bd54ae. 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/QZPLS2544605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c97b43f6eff4dac8530f53c31cc175724b6c87f7416dee476d36cc7d939293a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZPLS2544607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534770aff5de4b14dbbc15deaabbe52d90d0385f72b253e5997e7ea2eb1e5cc8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZPLS2544608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00ebf1dbe1e8ec7c82dbf9f94781eee2b09d373fad759630d6672a5c564760a. 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/QZPLS2544610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56897a1a9e641dd93c772483f10ed7d5c4c36cd1a02b41893b51a5383409fe10. 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/QZPLS2544611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c54a6e37c15d7e308de3a1669ef8d24f757af78d4d77ca2c9b27807009db22. 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/QZPLS2544612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701ddae9aed17c1b6d6d5636b6a4f045b741b08088572e27eea2eea4f798f625. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:05:47Z), 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/QZPLS2544613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d38c341100dc2160f28b8ba814134dcb90c8cde3cf51218f8813e5ef5ec76e. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZZ792592050.