1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xee43fcb9698107b0273f1657c658ab71897a5a4e6aa786bc9ae97090897f6fe7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddc6195d-bd9a-48da-9e20-1f7a7653768b.json and https://artists.proofprofile.net/proofs/artist/ddc6195d-bd9a-48da-9e20-1f7a7653768b.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 → block OTSBitcoinBlock must exist at that height 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 0x20a98673703c185c4a14106b9c08486fa17fd3cf755c55be8b97b3b56c1824ac. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/PHU010710095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60d630444668f54baff6bf3c1338a729ec4c56e71206a8c789e5c4ebf8ad08f. 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/PHU010710096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fc7249aade628e160b38b1fbcdef0ba6857dbf71e288d39c4005c9c514d153. 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/PHU010710099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4e99228c5d6c7b6b185cb6e80a18d42fa522e6409497c793bb3239707bd3b0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:28:35Z), 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/PHU010710100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59e0809c46ba83b5bff76f734aa74b16c2a3cd48b82beaf2ed07275636be605. 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/PHU010710101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e179b1459fdb054bcfd8e8e8cb7870bda99f16f3a227fe4b08070c05cacec4. 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/PHU010710103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496aec585ff6ce10c4e707e9b29e4726fe715ea0c06393be4ca73a939d27841d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/PHU010710104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f2a160e81639eb59c50a4d93bfac1e743a4885be7317d2580fe967fd9a1ac7. 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/FR6V82356236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baa9177cd3eb41d1a978051fc697209ae94a74c119450e3447b4a1be5e2e3b5. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/PHV031210114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b33c47560c2fe6b7acf46cb0a5343948015de4ed9d050fcea79fded4f4cd409. 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/PHV031210115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7d74d37fb7b2f611b58c7a58bcda6c426a8afb3b4359dd694869cb5ed5eac6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/PHV031210116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae272daad9b5ec69311ed1448e66f67fb52ce8d38fa99d366084f931f37ae44b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PHV031210117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114988bbab8d6f9981723f3286d8c0c31aab62626a44864f44ac1ff44743b317. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:40:24Z), 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/PHU011414653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78125b4e2d673d9660bcd4485204f7dee66cf503b05836d3437f6d667a0bc5c2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:26:12Z), 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/PHV031810247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe825b8177d70f57d23b098b9c64e333f6571d594fa21201d3ec9b1f1122ef5f7. 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/PHV031810249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149ed0a9423692d2c5caa7b6fb76d661500973e99f489f0a3154dc29e67a39ac. 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/PHV031910863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6a983b09f5c3deee7058b49bc0aa8251379232644e469e9c6d07bd04e723de. 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/FR59R2265949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc33cd53408f77661d81d50577a94619e8528b4b0a171d2664902a26b095cfd. 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/USA2P2413672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4363410aa0476d3cb5b4212e2eba81aa7a882a70968878142fed86b3997567e3. 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/TCAII2492194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8569b553072b6f7150d280ca08c9eac2a0976233e3c9d9a18c61ed266b91ccb. 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/PHV032513077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37921d21839279140354eec21e1ac61b204d8b05eabb3955cf7f4fc3b4cf51f. 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/QZAKB2475198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819317912f53937310d3b30d69187584f90609854fbc25c1b9c879f25434c793. 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/QZAKB2475199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53afce1dc19d04c1c81af01e11e13ed8e162b1d4975492ad91f8a5fe8eb4fe2a. 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/TCAJT2596524.