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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4310daaa60bdf9f62f1430819851d570a532c0e298cfb6b171043b85136bedbc. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2968c5f2-87cf-4a77-ade1-770103f3c407.json and https://artists.proofprofile.net/proofs/artist/2968c5f2-87cf-4a77-ade1-770103f3c407.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1619 Bad Ass Band (Digitally Remastered)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143318da18f4a42e449679671325126f7a1e15961bca8c11c2dd7c7f98b27c9e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGZ21349514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c522f7dddce841bf8cb4b598265fa07c0cf50ec0cfd378d6ddf5c8b9e1d51d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGZ21349515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e78599a37cf88dd86049ad56e990286c1c3c8165617744a711c51fb9c03e9c9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGZ21349516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ef162fcec61ade929f813ed3b8c5d49a7e8204e5a022533115eecad502ac00. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGZ21349517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fefe48ee7e6f7d7d293d56f5ed70c7183ebadc1a2a9edbb731b52dae556ec6f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USGZ21349518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa1d790eccbc28e68ecfb0ffc01c20f0a28884308b6741cf56523776156428b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USGZ21349519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658b5e0e19331f4d34a17530935d2cfc41319ec749151c75d157d922a2ee9049. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USGZ21349520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20af2cbd8db3308a474bd348965e7aa5ad36b6d984a4675d8b0aafd641fc8e93. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGZ21349521.
Soulful Moments - 70's Should Have Been Classic Love Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96e1364767bbef0e19bca93e8d317c996d642f8734f6e98ca2f4b49e39587b4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGZ21349581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658b5e0e19331f4d34a17530935d2cfc41319ec749151c75d157d922a2ee9049. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USGZ21349520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cab9dd157dcfca62c7eb8bc90123c89a5f09e9896f9688ccaad59c01c5bd46. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USGZ21349566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602b07c05f91a2c65d6552ac5fcbeaca241fddfda9d75d5a7564e9890ad7e479. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USGZ21349681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef853d000045e132f4180c31ac6aa94f9a56c60516c429179ca02be236ecdd9. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USGZ21349543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb833ddc83c050cf67d0497dbbf5fe8e38dd9f20c5e5f38d4b2b45bfcac22d513. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USGZ21349507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4497fe57c8f123cefb4fe8670fc9da031a9af2f205e5fd8c3ca52671bf505c7b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USGZ21349526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fb2a01ce42c3d09a1fb1ecc9ad75b12af52bc99e858eb6efd51ce6118b1bfc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGZ21242660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914907fce11a64ec9bb63d3a2bc9fab7a2197466d9e795edfcffd53fb302f259. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGZ21241422.
That's the Way It's Got to Be (Body and Soul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7c1be472e1739cfb284dac7010b552b88590b07751b8374b3a942c6e5d6141. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USGZ21241298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc056b1ce81dc42c61bce368ef045ddcb92cefd61c27968d2957f02a87acca6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USGZ21349724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f9093bd1ba616c4f75254e6a21158fd11e892c0cc6a4ff2be531c819780fa6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGZ21242663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75348168f424884ee7d93a91d99e63ff8803cc3ccfb3709d8c442f8a1aa54caa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGZ21138603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994117c04c38eb1739ffa0d2a6d02eab5d8b7620e7df7c67c0c84a2fd79574e6. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FR8GV2258190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b05c659b8a099e718ec67bdf9ad4b55349ede879a8350fd8abd7904f8ec7457. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FR8GV2258200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2815b2eb51766fbc66d656f9ee1e3720e84b1309c7919bde794628d807bc619. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR8GV2258210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8537bf1cae760e63abf38c69affb829046127c71329c7e6be3943166bf91f82. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR8GV2258220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7efaa55f0da136a0be4db4477da4010491aa707166c446e4195a8307fce285c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FR8GV2258240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38e1bc0d0d8687c57e057135855716dcd95a0f7542e97f95d5e046c72da68a4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FR8GV2258250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc6f91c13ad801a212ed155b9a5cccfa2d988fbfa10e58009b122eeafe0ceb4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR8GV2258260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a44b594f4046603dc0bbc16f50e0bcd93f94a97a2c5d090885ae77320e9823. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FR8GV2258280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cb9fdb8dbf701624fdab7bbad7dc323f1c9532a5d30d0e2472c3586faa3cfc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR8GV2258290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750adb9942c17d3f5b420247bb140da966249131e9cce627d86f43ce42ee80f2. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FR8GV2258300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970ae029b0a69ead38f86817fb63ab9bb9fc6fdedeea966e8c20ccab49a57a5a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FR8GV2258310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab9fe7f012083986cc12477ffff691d98561603f803945a34301d9dbb138e01. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR8GV2265350.