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 0xc0521d8f195584b4ae9f77b1b076cc2db21cc6c4dbc993d077e321ebdf0cbd26. 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/c0ff6424-0c04-4cfc-820a-63abd5076ca0.json and https://artists.proofprofile.net/proofs/artist/c0ff6424-0c04-4cfc-820a-63abd5076ca0.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 0xba1fe42835aaf24d4a22d60bce7a073cba210a1d7032d4f8d63764afb517f4ca. 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/QM3DF2215932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6534f31a1e64dd4f6c34184cb5b036046fb8fda2146d0e27d66349cab35fc4. 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/QM3DF2221811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feed19c241a9d28940183671f3b643b047254115293a61d4003e3842fe0565b. 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/QM3DF2252017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3bf1860b2792553507058e159a4a5285838d626943839daa26272c3dfc3183. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:55:32Z), 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/DGA082395134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a9f725eae16f31909f8de1bf7bf8a9a90bfe177d4baf3a00784b09eba3f080. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:17Z), 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/DGA082395136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c22001f87e41c524358bfb2e92d9865a1e23c193e89c151e525fc790d0411e7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:47:00Z), 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/QMANG2217542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a861a336e11e98cd788a7d3bf1fbb9c986725e116546e6c56840422cc266231. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/QMANG2217541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e414d97f232ad0dc588a19336a4ea6900953f3a961b6dab04f58b53be823644. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/DGA082395138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1606a71a42ff0ccc88e341892c0225a788f68965ee1fe0a6b6548559718f8995. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR59R2433883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce1de78ecd88d1c7fc60679ae9075a4a6d9fdc5ba2a47ba3a04358c3ecc6551. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR59R2478971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86572c9a319b67ab1bdad0c678952959d85ddd8ed8a85a624533d0638ceb207c. 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/FR59R2478972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa958d4422f656cd275e8b23caf57fce8a023b06299012690abf87e37cd2d1d. 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/FR59R2495158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d0107eaba4d27442d28aa65a1b6b90c4424b66a2ff15b75f739251827eb088. 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/CH7812412431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930b80caf88571139fd80f62f3b227021d197e4ecae60e61ccbc4cdd10c8be12. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/CH7812412432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91df15a9efee8f811336338aecffa011bd37b0b923e82ffa9a68b6e5f66f3a98. 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/CH7812412433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790aa532b7941b2dc0e8278666194ab7998a0c1d17375abedab824941c527292. 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/USANG2435643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bd90b148a3d3ab33d7f50d759cc0330843d48fd362633ba4a46f90afefa76e. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USANG2441566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd16604f2ed0a3e5d9b36c3cc90adc46a6e1b78b3a25ad5ecde65d531e5e0cb3. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USANG2453712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5635af979220d85d7ed9ecda67912f1a628681c863e26f2c705d8c933646bde0. 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/DEZC62454963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf092db0b9e6562cb129543b04c5e6ea00499942effd929a03ce48ea44ede0516. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/USANG2481691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20d1d578125a6ab3c2d4ea1ee1ba8e20f7ca87e0f84f162f6251cef28db06ae. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/DEZC62458062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea99f1335f0ecf70faaa629f93f788ae7d5f469f574d6370375fb6fddf4a6d6. 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/USANG2482775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4607094ffaaeab245824f1ac5ef7d23b908f6ab549efb1ab3197f72b1dd8fee3. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEZC62461800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa005241b4eb0366760ab94fa9934fe8ef93ac91d976c37ae29729602c96117af. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USANG2494754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738697846a48333c858d30ab44aabfa229f6c09235f47275e225a84769b1e969. 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/US3DF2529408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8553037db14aae62be92a956733d9fb3214a4a5bb2915f29b546617b65a1ab35. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZMEP2528852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e1faa42001fd889a36ef861344151722f7f9b2bf768e4f0fb9b8a4d23790aa. 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/QZTAW2539209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeace3ff2af38c8785a10c5404baf45d6ef8c16a831589713ad3229ad586803cc. 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/QZTAX2534654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d57010e37fb2e346a6ff1e4165ca1e9a45bbbc57626148cce29764705690d4. 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/QZWFT2501902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58608e802031eaf753d0d4d26cabfd560a4f57a9ac37578cae36848c03666a91. 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/DEZC62512088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0061a6a218d219015781ed44b545ddaefa2d1cc644fd9875de3c5b48795f909a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ7K2540066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda39247a703fd7d50469cc4146d1d0622797b3b98b4158d2facb5042981eaa30. 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/DGA062501266.