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 0x8c0f185cede9aee812433b6fa933e25dffe69250f48c567de372a65b51851b68. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5fc5d7b-9b39-49c3-a4b0-75e72223a1ca.json and https://artists.proofprofile.net/proofs/artist/f5fc5d7b-9b39-49c3-a4b0-75e72223a1ca.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 0x475069b9b8824bfd3bc07a421a90f99768602551d367c48b67812988840093b5. 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/GBMA22387463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e994cc3c801b0a1bdf3dea51cdadd5e0ffc610f5d2985c5cb98f76abe43d0b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBMA22387464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f30ec9ece72ebc9a431dab7b383609bbcb6aed644c3aa4ace07b2a68f699d. 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/GBMA22387465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9328f181b710e3214d0fdac0072dc57e31de6e2f30f050d8aa8e1ab6e2c92a00. 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/GBMA22387466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd022a3345c6e4001e1607b2da25023b98c3678df67b3372434a48ffac7567c22. 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/GBMA22387467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9bbadc326d5108d8be72f769b8c0e3ff927e6e5e3cc9013c2577b8539f2d67. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:37:56Z), 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/GBMA22387468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069084516e2efaa679b3815e22b9d789ca9b676464e7fd8e4bd38e77d45fbc61. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GBMA22387469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dfa31dbc723529a1c2f18850bbbb4c74a9df5c2f75bf6cd8bced06d9ef033e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GBMA22387470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac0980de6f9d5453c8c1bd434476ab1c05d46d0cdcf3b89e35f1881ef8e6e0d. 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/GX53U2324430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292ef7f02b22dab65b587ac941830004306a9d81cd10d20221c7bb931f8da888. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GX53U2324431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4f48d13f9b099e486f4e966422b54c7a217e3312a90b0e2eab04b9e99606eb. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:37Z), 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/GX53U2324432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f9381c15628195013f6412383b0eb3952e6a17f9c1645d40e2a2bb007c1312. 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/GX53U2324433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9b1b05f1dede9d008f4f3cb5f1fb6ff4dfccca4b0c8e7a06af54fd13b7d905. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GX53U2324434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d0fb979694bfb8839982f3a6f87c0a51f4edc35e7eeb4d28ac43ac97ee9f71. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GX53U2324435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f0e437dd8e6b70838f8a96e079c2da1783e4abfca75938d1968c5f584b1fd5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:47:11Z), 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/GX53U2324436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee7ed458fc43ae54212bf929b88a8f12c57b1552c3616d7f0623ba01eac4b1a. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:50:30Z), 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/GX53U2324437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded965be27701abd0c00e7b01fe36fd58a02279e570ceed5a6b7a4638a2668f1. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GXF9Q2445483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6510e15f5ac61ca84ef57db29a38c051b2db04837aca9381be13ef8e3363a897. 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/GXF9Q2445484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7791305c0e2144cc2aa5e05cfe6ec7eb4997401c3b4074db3300637a977a6d1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GXF9Q2445485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23036ac185669b556e1c2f0a5d3c257d76fb18d2e9fdd1ca7ca210ad776fcc1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:36Z), 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/GXF9Q2445486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3174638609ad5719a2591b7598af3714c19ff999c3cbacf974ddeb09881b6d. 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/GXF9Q2445487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbf84062b703e4a81feb1c5ebee15608b23904250416a94ee4f49902f0d6b6f. 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/GXF9Q2445488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcfa7ca9ed3ef9451a38a1f3938bddcd1400dfae83e8ab51f2753fbb023aa1a. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:34Z), 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/GXF9Q2445489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5eac6c960718ec5c47f68ffd2cd75289fb01a7c417ce1bc200ee86b3aada971. 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/GXF9Q2445490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62029804383d00ebeb8d35656e40d7732517a54d1acb47f754ec2ee3ef34739d. 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/GXF9Q2445492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2088b692b9ff4f87491e08d94244aacbfbd0d40ab347728fcde1f2464660cd6c. 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/GXF9Q2445493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cf5cd1fbf42b4f68ce8f590e67e7ffeb3491cef79b8f49f92098ae4d231b31. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GXF9Q2445494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b29f397321c5a52695233923a0ec0368129e0d75c091afdd8dee488830d3f3. 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/GXF9Q2445495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf6d8bd9d647b47cb4486a6885bc101dbf28af5c3ced21bc41fe5251a52e6ab. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GXF9Q2445496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafb219445f358eb7a1918cfffda62d84b1b46cd8868c29ef079d98db498fb15. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GXF9Q2445497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2cac77b61045486c657cd2085bd8289a5967d05bf915afd7f459ca5fc5da14. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:22:13Z), 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/GXF9Q2445498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa48c5de41f479cf0867efaf71e7612db836701424c9445ebabce8720772d0c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GXF9Q2445499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e505f6776aaadeb1b4ccad60975a009212247ee9a9873c58f41353a44eb9b63. 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/GBLFP2521718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea21a0ebe489511993e7fd921dc61bd1c24155c31a409a65b803c877eb3315f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBLFP2521724.