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 0xc9999dbfb834223cbea25f89feae9dc7387dfbea4903148354d5aa7ff1e02d71. 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/fe7afabd-bc60-4e28-b7ea-ce379e99f9e3.json and https://artists.proofprofile.net/proofs/artist/fe7afabd-bc60-4e28-b7ea-ce379e99f9e3.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 0x240ad1e5421667ad68bd9249cb8d6bc9fc0963d1a6f078a76df0ef4ca03843be. 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/AUBEC2059632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7292df9d2f876a5561731c1a16271b9f3d57b6cce2444dcd89ba4881bbd6a37. 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/AUBEC2104024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6194d051a854d651ee66b81fd6e89ba19f0c7abebdb69b0fcd0fe8f50d8b012. 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/AUBEC2134520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ee2a6b2cea14d1a1e41486a9d9f80409d076cb0535d9eeb0b654ff17e7cf7c. 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/AUBEC2187327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2876e64c4a1ed4f998f69e342537ddf5545902f5cf0775f4274064937a46281. 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/AUBEC2210821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa2348e986f42bbb1debf70b212f37689986c4a6b4b0f229c0131c0fce4edcb. 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/AUBEC2239336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e6c76566e07a7aad1597063f7bd77e4b9dcd9e116d97aae36c7bda7ff98abb. 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/AUBEC2239338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a4e68bb860da08da91b04fe52c2221d23109c05ab1e70838ee43eeb4f305d7. 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/AUBEC2322837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015b34bc5fe45a6b787fb09684005b407db14970a29a419fc5262cd6bf1f710d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZMER2324610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c52f209eb42bf799dbd768a28b7e3e2ced5e9404e77f82740a73dc953fb86a6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZFYZ2420594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f4e222c084151b33cfd185f54d0253e93f43b0cdc1f286d8a6c2e6142259f5. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:25Z), 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/QZFYZ2420595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb483cc6caa17c584cfbbffbec4b69ce77ba71f7aeb1a188c49145ffa600f9c. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:08Z), 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/QZDA82486748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858a730ba4c20a39159aea6ad0acfc19f0da867ba24e887854c4fd7d4d1c70b2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTB82427008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8a3e2ca3640e8d0cac7dc918d4e2445fbe22c0be254bb9301331c57cb38738. 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/QZTBB2460680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc543ef152c76f51e749a825a517d06bb3aef06e7d425762fc36642cdcf5571f. 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/QZTBB2460682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0be7e3083f74aa8a084a7ae039fa1a1c2fb8358a53750d954ff87005efd117. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:22:09Z), 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/QZTBB2460683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a3043e3b34788eedc677bd5c99c782fc872a9692b48b1ed8821a53a25c0281. 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/QZTBB2460684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6261706b2c6a3eca50565a71904db2f435462655523437467bda61f3bfbfcadb. 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/QZWFW2418204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfdc9c979a5ab85d84e13078ebc9ce6a0e8e271f844e9c80fd86e8ef88ceb06. 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/QZFZ42534964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ce099d08086089d579125005300671a13c8004cd453bbb9d26508969ffc5a6. 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/QZMER2516483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62446d724b6c5b910b5a4ec4a1ac52f6f9f5ac322a81b001ad0595d822f75b83. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNWS2540017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f677074d103a199f007e21d578ff87feb5d47e7e139a097694355d6c6407c2a. 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/QZNWS2537290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b575236a8ae6677f90d29faa4c9a4dd0328dfb1047c5262821fcbeef75738d3. 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/QZTAT2507951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5264f1f0b0b1677ee922a1fadfa8165e23d01f40fe9a9361ebcfafdf704163ed. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:27:28Z), 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/QZZ7P2536956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f32d3b1270efa2fee601825cdf21060aa443e07c43acca81775bf29054138a. 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/QT3F32583853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4a3d6210938a2a51b9942cc6b7abaf4bf5a119ae82a86df947b9c339d34f10. 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/QZTB42360377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46f414ffcf03c1ed61040c7cbcf12bac184660c234fdb3fb24a1f1a23000ef8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUBEC2175576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff04a5fc208d60cac7d8c276f2bb6bb5427b4effe99de41b6f4c9d84f5871b26. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/AUBEC2324330.