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 0xab497202f582a9fa8b49cec6289493109fccfa7ee2e02d6df4adcb8c3d78961c. 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/290f2cda-87a2-4279-a4f0-b2e6587d44ef.json and https://artists.proofprofile.net/proofs/artist/290f2cda-87a2-4279-a4f0-b2e6587d44ef.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 0x997bfff26a910ae11f905e09d1439dee3871be67af74e331d3c69f7ae044d26f. 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/USVKQ1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e8a9c5095573e32b103ea022680397e482cba6403e15b99c6e0d07fd0d2bd6. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/USVKQ1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a4bfa001dfe30a46e9a108d25a60dc9df13d97e38cd11616a4b4194208de08. 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/USVKQ1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2306b5a4f1dc26abb84564877a5ce4220fc6f05b2d07da11ebe4ae12bee2505a. 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/USVKQ1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb367241ab48cca695426f8109f951584d11fbe6e2db5738ae02ce62287fd3fa1. 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/USVKQ1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd2309ce1af530c7c1fce2d754def5c8b77270307b4e59141caace95f383d44. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USVKQ1400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e68a7357ec33a5cb5eb18db894ac04f4bc897f673f26aaea528aa57327b945. 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/USVKQ1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0886b24336d2fcbdc92472a82eced895d95071e62669a00f609adc802935a905. 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/USVKQ1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38292f80c1e9756b6d1882f1eeda7e95b46e48b94123e6adf1e03a3d1383f8b5. 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/USVKQ1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe353d0ec2df65891d72ecb69c4e07b2ac474269ab1620467061544ceb0bec8b0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:19Z), 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/USVKQ1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2eb6d3bcadf0c835785f55438dd3601004ba370654edc05434cff91477c523. 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/USVKQ1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b5ffd5889aadc3fb8f09a5362dea711974a7420b03871494d1fa5b55c0a8c8. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:35:44Z), 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/USVKQ1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0736aab4be9cfac4ae5405c0c62abc0f0f86e1204cf9361cb898968669df1d88. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USVKQ1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fd639ec70db2703ff761b4d169ed0559ca35cf931f463bb84a0ae01c0f1e13. 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/USVKQ1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce1abd7d14140c9e3394f1ef3b5bb19a046f01696c9214a0310883bf28082ef. 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/USVKQ1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83d7d6355f6281fc922030cbd695cd9d23e6a5ae7f3b88524d8a4b4b2f3188c. 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/USVKQ1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dd5077c044f5d10cd5ee2a1e959ebe0dad519278df39d4c080a1a1bab7dae3. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/USVKQ1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3849e1bd7d549eab45e6f3cc7573d3aaf289b2e3f35c8adbf8461ff432b5af29. 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/USVKQ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e1145f8d8f009d67eebc8cd3aefd22ca3ee9077a20d1f0dccac476851cbf7c. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:26:33Z), 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/USVKQ2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76d823f68f03a74edd59570ba8fda709f48be8a54e7cccf070baa1e02f346ea. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:26:17Z), 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/USVKQ2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4255fd61d75f48574e53ae6c3d33d41b12e67f48c9ee3d22620e334938c3ecff. 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/USVKQ2510001.