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 0x4d777d098ad6be0d56897531a8f8729817d90055dc651b95a08a99257f26b300. 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/5b2ed5b6-c0e6-4101-8e26-5ee7c5bc02f6.json and https://artists.proofprofile.net/proofs/artist/5b2ed5b6-c0e6-4101-8e26-5ee7c5bc02f6.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 0xb4567e2f90fc5b4541027887417454d3429bc6c92131c767ce0d90cc7dd3d7ac. 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/QZHN31912745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532981dd919a010d9e3bb6cda43b86f13428c1dedf56be87fbe2ef7ef2fc5928. 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/QZHN81923536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb02b4cb2a33a15b4c31c46439af57cc71f622a13a316599d215ce93b1152735. 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/QZDA52008379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40651835563e2455c2a7585f385f3952111707c267a079e64512ca64b8fbb415. 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/QZFZ72040760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ce5fd8bc2970a526fa4c28b6aa6a9503b5fb4391df7e8e0b46dab76cab828d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHNB2091429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab861606c5293e7b59b85caae48271320b00d97d3e693be4c8ef284c20b9c2da. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJX2150050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946f24fdefc1592324cb97736e27a7127fdfbb1b776cc9435993e0faa909dee0. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZNJZ2113373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109c75c8d79236eb6165c9f3783d6d7c849fdc56bdd4e826edd5c9c1b24f0b1f. 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/GX53U2093678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f378a68c11b21d2fc7e9c0b51acfff8cb86a0a5821e7be11033b44bc3f06ae3. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZHZ62296455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcb02a6cefebb37eddb7c475c34e40ed8af3f7c6a32f7f4a9f83c8f409a17bc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJX2149933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946f24fdefc1592324cb97736e27a7127fdfbb1b776cc9435993e0faa909dee0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJZ2113373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ed013ba90c23a73fc233abe4c60bbb288afa08d7054bd7f21fe73231b9ec2c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHZ62296457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecf1e094add30e6905902806e356e9069919a056b1caea5efe00634b3200949. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHZ62296458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f680b565b1517e49b6512c9e9654d71dd361eb04036e805a288b010aa144ed. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHZ62296459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf69d051b44e0b89f5e9c5e982419538a735e10bce3158119c9210e11b3a168f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHZ62296460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19d7c39927a373ac763d324d95877ba3b9612b27fd3d363ff26824b78fd320a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHZ62296461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5e160271ddf33668c7d6ff2a1bb6b12feda692d99ab17c20de1480797bd523. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHZ62296462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bb0a8c328920135a32431ba55050b5e56c9e0e602301fb544f3f1f21c76ca6. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZHZ62296463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d60b5d95a6796a383615c4941b5fd125869b4d143458bc800444fa2e0de49d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHZ62296464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc0f021ae4e837985789d323584e38db5a5c4691b5da03c66e68c10cb54c3ed. 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/QZNJV2368380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d84cf5abb8f92698235df901201efe210b34e37b989a05b61ef194e4a9d33e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZMZ92309955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8019a3003b34d93f61e4acf660b3816757716f82d9522c09540f73e9cc19c805. 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/GBLFP2310725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c518ad0e6465f78500727b0d08e50d993d475aa97bf5bd2aadff6ecfba9802d. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/GBLFP2352978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7489487ac9064bc2843794e7251929f9979fcb58480a1e98e81ab8b5f27923a1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLFP2352980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb56db6b52a187f99d1129a6d04135844f36044e2c07af23d278112f9966b94. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:05:49Z), 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/GBLFP2352981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408bf42879e7fd961571a0897934d7e4d56828ceeeb87749efde9dfea6b7f258. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBMA22314116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7f82ac2d4e7ae4dff114f6a250c52687b8ac98200a57d76329227ead273f56. 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/GBMA22314120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa649c39bdc6a00020b4d23b2d6982e1ce081660be53e3f1c4d4ea030d89d6f7c. 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/UKXN22477448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1713b8b0040d9172e10e4d006f09d2382d3e26e6d7af8160ccb27611f2182e9. 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/UKXN22477450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdaa4d642b2d085a258865aa83321bf910ba593640b3245f81177f282d61423. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:33:10Z), 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/UKXN22477454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a24f59fa958b9a22be9fa3e4b8c783b49bbd0d1f755962af95ff89744213f1a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKXN22477455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2de699a2eb8f13d301f27c80fa6efd080b9e9239ab07c2a96377bf5967112f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/UKXN22477458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b8ef8e8b6051055978a60a38064c3e32f0fe2dc949d5e2112315c0539089d7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTPX2433750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d63c67a64d698816fb4ce97e6ed07469a5704bc4b14fd78fd45b39718220ca1. 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/GBMA22508057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dae84ab15fd9c84018dd08d391f47cab2e29aeb78b243bc17c26d1b1edd1262. 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/GXH2J2574333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766a34a3552908371c65e695b44851268b1253424fc2ae1a70efe8a34b46e9cf. 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/GXHG92546854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2778d7d90c33923d6310f3cbf1972ed8ff6c85429940f66eabd19007a1908d. 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/GXHG92551519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93a25cdcbb175a8f297776b53176aaf08d1cfc26f4ebaec88ad6a05e5ce8893. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL5MF2100520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6b44dd9b6aa206f35a8a5dcd22f37d962a28f7b6b09f5e26df164e6e2891be. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFJ2177014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5a0fbc3fde006a1adbe894f6fc6fa5da0da95a54b5645c10e87e39bbd63d98. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN32390847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8235c55acde3bbae669bf1a92e0ebaea83b0e79256a03a2eb9337e81aa3b35ed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZJPM2100910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc327887db30e0388643de02edc8d0b0baf787170501bc8f87d6a6d2e4ca21f9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLDP10800288.