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 0x24d2921eb300936e7de5e8836a0f7ae11dc86490d890087cfbd030cdadcb7d8c. 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/9492c8ca-d58b-4550-b298-40a96ae6a8f6.json and https://artists.proofprofile.net/proofs/artist/9492c8ca-d58b-4550-b298-40a96ae6a8f6.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 0x9a112f8234a5a5e74db2b7ab91376d6adfcdc9e67c1c8564099b70e51f759a5b. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/USWR60251135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69787acd7491001a5e7122441c0417177fe0b19cd9ddb5dd115b9f42a8d9c00b. 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/USWR60251137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d789b1888581afdb1060e54ebd37b388535874068de2a36692ffcca35bd72d1. 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/USWR60251138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998437a450b905f117382d09fc243f40e7b5169cacbd9f6213fac4109bbbcb79. 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/USWR60251141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc931fac8c1a0925fc19f8dcfae4da9ab35824810364b9a3f56177db94bd5bcd7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USWR60251142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7380b18a9bbe41dcf3ab2256f042f347cf25106de64ef6fea83f92afb822d207. 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/USWR60251150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6366f7befc0d3453841ccc6934e2652aca8fa8f0afc32ace5ac7dffe7f3511d5. 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/USWR60251158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6fda78541acb1b7f066c22da0bf0527c0c72c6a968ade5d8793b381461f5db. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USWR60251160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0634bb14bbc79f8194d1a222c87c9a5ffff69500b9df07a85443b150b6e863db. 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/USWR60200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431f02d35bc52e9f8acab508c990e136e74640e75680fb9bea8268a1a5fb403b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USWR60200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9a0a7ae0162cbd08d6c7c21680ff46a4986c21d01cc8260431cb395a84aa30. 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/USWR60200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4c27535a0aed5491aac32aab8b77376283fb287990669aad5c0c1d3f165e84. 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/USWR60200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86783330901bb44742df3ab05b949e32546c1f1901a8e4561a467e40e8b5d47. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:53Z), 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/USWR60300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e9a43030cdc87ddcd52fd9ae2cba63f7550684714e0c1b5521a45ad0da75a2. 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/USWR60300390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c8142e0498ab927a32bebc7c1f07d6ff39bd0687f0bf4e43d356e1a0d549fd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:45Z), 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/USWR60300386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e574e3c8dd2611c73f628bbbb4f641fd6b9c016c59f397ba018f11f5366f1dc. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USWR60300387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3cc1e4afc05f002730cdfbb2de35440b06b622774892fc11a74da76b3c068f. 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/USWR60300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4263540a7712534a64b2332cc13608c087b2a13e321de2643f12444544882450. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USWR60300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41caee4d6e5ea4e50ba6d5ae4c49a79d1430878c9b5dda6d13b9811f495b0973. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:17:35Z), 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/USWR60300259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584cafd7d66aa9e93b661bb42e67932a7cc585b4edebefdaa51f5819b51b8999. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:51:05Z), 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/USWR60300260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd850f9ff181192ac5ecd14f126d0432d42b163362e7736adadd352e5121939cc. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USWR60300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772254e036efd37da227479a4fcd944750dc96e9561cfb89a72f0e22bc844967. 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/USWR60400469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b856e6b46648d95610f8262c8a22fff4f4e833e7b29354c7f811453917c5d4. 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/USWR60400472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88097169a13bd9f01f215cbeb09d39026b605c0ef7f88dc64623e6e4d8d7c2b0. 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/USWR60400471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0ce77599482a8d0eebb2bbe9d4c0bb6645df59ca29ec1236b36a6a7032b38a. 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/USWR60400475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c90f482f49ae11f1215ed577fe65e9c7cb17701e406c816de7028d45d5cb116. 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/USWR60400478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e92a595f7aff5074187e8d631661b154e6e441c83c3febcac700d0051953bb. 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/USWR60400718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddd272887796c52639141216dfd4c34f91d5a8fee91d1ead46c051949aab2f9. 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/USWR60611712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af8dbca4cfc950fa7df7f2e64b3a2615210ba759130077da4e59e8bc18b6693. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USWR60611716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30726f584c001436a4899bb4da785e2cc1bac4bfe5329a4386e516ae736cb78d. 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/USWR60611717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8934dfb2ff2b80c308bf10d0225a1ff32b093aa296ce73f30dbbd2a0345c151. 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/USWR60611708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8f2d6a8a13d46406a18fb939204f34bcf6ae434e673d0df8c23ead89c3825f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:12Z), 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/USWR60611719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4742307cf704de6a35801b3d1ac81b0fa0893b128d0ef8968c1aee5d421f35d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:27:48Z), 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/USWR61000319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2e3da01f8d57d9b1e912a413ef1d491dc334300a320d2bf48917cdb24db739. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USWR60800986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d622f5dc06079d9796c3b0d27af3a8f1d8f792b75b5d8de8905028e9eb3c71. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USWR60800985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9313dbe475fbe711af34a3c62df123a17269904475ac18167fc415b23360fd. 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/USWR60400559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b0a8229d90d43b88879e626b4e0acbb77eeb73eb3e1aa5d10ed6846dd13b5e. 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/USP1R1200788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac2a2d13d81375cc6b67d7e489e0cf986f6bd54261c8427369de9526770e3d8. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:08:03Z), 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/USP1R1200785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cb727ee201955e2e0cf9a7f35fec26a94d49b806476bb966d4e2061fddbc51. 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/USP1R1200780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aceeb247d54cd0148ddf8ccbd115ca3586a13b8ce4808f371e9e4b23c779dbb. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:28:12Z), 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/USP1R1200787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb85f4adc45ff962bfbfe40179a8aa9cf6dbc9be260431c740c4c5c6f9e4e49. 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/USP1R1200783.