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 0x7c2b2cbc80e14bc8e1aaf2639ea0dc72954bf912bab8d3af7bfbcfa1589a527f. 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/84eb0363-954f-4283-aa30-08b531357bb8.json and https://artists.proofprofile.net/proofs/artist/84eb0363-954f-4283-aa30-08b531357bb8.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 0x50f3dda094a7b24a7f8f10e4610282b165039fb74547366179024c79604a0690. 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/CAI371716431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1860ca7ddbc92abad09996f6df41797e33eb822f959f1c91f07b767bdb9a720d. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/CAI371716432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8adbdf5ae08d9b7375fbe719f35f5af1922452daaa25b6bebf56cc805385d77. 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/CAHQJ1871251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769817fcbe2174cbb63fd0a94340c9de31a5aa67e4769f28aea5d91ebe9a879a. 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/FR9Z61800214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf08375e63bf095ee49134c7acd698abd7a9470daf8f70d82cbb525974eac14a. 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/FR9Z61900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f55418f28295ae20388553fd316c6983a59cb4f01e9ac34927030eb6d7ebce7. 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/QM6MZ2034522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ccfa1fb05098dabee1e9f1a81dba34a9d15c73617dd804e00324ff69823551. 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/QM4TW2139592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00e1a7360a5ca4224dec043881ec4ab5a339fb55aea6ff5e60fe2d230c3e24c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM4TW2139591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6993bb6dbb48823c902cabff23be33baad36027693c73b2d34d2df181abc277. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QM4TW2139594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb444ec568fdc41404755fc1e428a36fc1f58826d482ee78da03e0aa69717d99a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4TW2206397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d77b69f5752099716edf559a6c4824fed316f64a43d9318283a46d37ba9731. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:51:45Z), 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/QM4TW2206394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa553feeb8941e8661f115006e18b040827fb369861043c5c898aa592805fc15b. 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/QM4TW2206391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4313a0b450e1bdc09e4845e34b6eab07ad346a7d0522c6f048f562de39a4d0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:54:40Z), 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/QM4TW2206389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58dbae136624347f5146df0c5b6c2aa1bb99581d8ee4139f3f1350330865665. 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/QM4TW2206390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c040f2cac45cd70b934e8286df6df69f10ac407f6c11c129e3a772f7f26992. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4TW2206392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91e9645230e519763016e95347fc587dc9c8760932244c21afad4c7a67d049d. 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/QM4TW2206395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbc8f486a4c688d522207656f801291a8cf7d82cc275a46b163ee90790a9ddb. 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/QM4TW2206396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8249a1a25dd8a237d9f1a3197669867ee6ece7b4d6f1266bec09c664b04109f3. 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/QM4TW2206398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d9591cbc0bc78e4ce377506ac0adf21f2b56c656f56782b0300d406d6a5efb. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QMBZ92251291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc65e80fd4ca878359e48b760896a11e91fd853d5f020cd519cce4ddfc48410. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QM99V2300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0215cd3393422ed43800769726bbf3f61a0b8b7cd104ed1b0f8917bcf3e17901. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:00:43Z), 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/QMBZ92388340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4044cc9e4ae588e8436ad67e24f8d1083192e1cf7ee1551ec3f9505705a191. 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/QM4TW2418030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f002a0f4547e734311db740c701e2d9617581a01cca6fcdeb3fe5d1b2afbead. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:41:09Z), 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/QM4TW2418029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379ef53f056ab1a1d10ca13abe146d00a5aa9d16622845fe48489b90090db3d0. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QM4TW2418031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb8ce46df5fc0794964b357c38448e810950d933e3990e06be8f2898287d4b3. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QM4TW2418032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f9136c7402e11924b5287feb92937024dd13dbb23c268a2513f4379e7ab306. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:54:29Z), 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/QM4TW2418033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d95e3470d1294bc09f02b2da02cf2af8168de224f1a1bcf6f6282541c52f7d. 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/TWLM52400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d95e3470d1294bc09f02b2da02cf2af8168de224f1a1bcf6f6282541c52f7d. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/TWLM52400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7157e36dd8d05f61391aa3ed70374a3f1162e29852e000f2cf8221c662cbf613. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6MZ2034521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f55418f28295ae20388553fd316c6983a59cb4f01e9ac34927030eb6d7ebce7. 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/QM6MZ2034522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6904a9f77122b2f56c5df6ef16da6d5c9889829606e846c465e00b3f132d4e. 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/QM6MZ2034523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09efce1281583e60c32713126fad1bc6fd39613540260e927ffed3118e8b9bc9. 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/QM6MZ2034524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe525f718731898c79eba52ed4c5412e822963a78aee87304f88b8882eec83c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/CALVP2011285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b63e482faef7ef3b72e95675a5639f45701c7fa06430a9c4f985fe2de48fd8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QM6MZ2034526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec83e925fd7e7bec402dafcadfdddda67f6f75bd1306cfd27b4434bb547a9d6. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:38:08Z), 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/QM6MZ2034527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf818a8bc9243f422f39e2d283ce75cc63e27f79deb01913d7ee9fa8c271e794a. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:18:29Z), 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/QM6MZ2034528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e806d41e577ca8635f4c02b0bbb1cb44b76d4eae807540b0501ca7d9db2269. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QM4TX2572722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f5b7a76c41bc301864c4cb28b0bc195a0306c101e773c3631cbb0657d3783b. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QM4TX2572724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675d2ee5a2d4700766c1e38a7e5b9fe530bde6980409e486b717f2dfbe02c2b7. 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/FR9Z61900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf08375e63bf095ee49134c7acd698abd7a9470daf8f70d82cbb525974eac14a. 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/FR9Z61900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d95e3470d1294bc09f02b2da02cf2af8168de224f1a1bcf6f6282541c52f7d. 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/TWLM52400102.