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 0xa69ce3b26dca2a961922aa861f97bcf0a616464bfa49a56de12601b6de426da5. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cab3cbbb-2ff2-4ab8-ab6d-668fdee8d9a9.json and https://artists.proofprofile.net/proofs/artist/cab3cbbb-2ff2-4ab8-ab6d-668fdee8d9a9.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 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 0x88185cb9ec682a770f2c32e3917f4bc14cbcb45e145ba25fc6dfbaaac116fdfc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUVC01232611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7922a5993ce2512bbe51cea5d733f95945d2c3c4e6e49e5f4bbe80f3c931d04. 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/AUVC00700520.
White Treble, Black Bass - Slicks Original Jam - Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f2aa42edc3178951acb1d2dd593a11d675f69ce735fcedc62b40525463e0ef. 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/AUVC09900311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f46cfda9ff96137e38c2985eeebd29edbc7c359edac406763ee1e807f729ec. 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/AUVC00503410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc048e9a123700e4593db39b74c66ed2eab7a2d09b1dcbe969e7f1a9131b042c9. 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/AUVC09713222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6e744edd778e8c25dfad81201864894bfa6a551a8b9d6bc73efa6677f2b876. 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/AUVC01003914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5cc8acac0e7ea1dcc8330c176401982d36b579c2eef84cf9b9d172ef118719. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUVC00604311.
The House Sound of Midnight Riot, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1f425f3c2afed8f3295e86381d0813d59637af01d2a4b0166ac7f53b021775. 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/GB6WQ2300169.
Real Flesh and Blood - Broom's Kick Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8c9f42e46566efe04e6837208c4e91cd3cfe6a6519439df6979a87aece1d1d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GB6WQ2300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2650b7da9cb041ad76b3b65346bdab8f858a948cf5f8348da22b13f2af92b826. 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/GBKPL2098563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e89e650c72096e041d9edc522efa9c46ee5019d8bf04121b7ba10f95f89c9e5. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GB8PY1800173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6c7e87b3c91fd33bfb1b8fde27d8a9c074a4697125f6bbc5c0d000565bedfd. 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/USYBL1500985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7181d2301fd3d0f6df501a233d5073f23482c8f1e71742cbbe49b8b7b12333f2. 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/USYBL1500988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba367d2805131767cf3ff096a8912eb3323292c3fa066a6a13981c6350d5bd0. 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/USYBL1500989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901513744466505dcdb7da66a4b2b1c1fecedd6ed735f555508273038e4b7dfa. 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/ITN601000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dab603db8482640be611bcbfc3cdcada40a08cdeae538f1d69589642c3d0b0. 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/ITN601000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b00b07ea76008500cbf4ffaa78b497672bf4d8b64a99793166feb18862c7e4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZWFK2378422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd7018b6704845500e45df8541473defc8c4134e2b36e04d88d1614c08ccd6f. 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/QZWFK2378423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1cf3f54c90a167d6d53c76ceb5fbf4e864ae8707c29807e7cb9ff8ef385645. 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/QZWFK2378424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815f0a5f33b0407179e740a40be742b07c67f396a462427040a2f64b26fb2916. 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/QZWFK2378425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf9301473e2bc7245385b9d727242c95ac0738a9941a1c4d4d2bf90114f5ff4. 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/QZWFK2378426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74522efc0bf6b5cf5e84c11b2fc8ab6dcd79f87ba156a81a2f27acffd14dbc6. 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/QZWFK2378427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944a5daa5d0d734d4a4883f94eecb8eabb7c3f449fdccf28a26bed70db9847b0. 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/QZWFK2378428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04913ac5a4983a4b8f959826c6d77bb98fceca94f9ea60d5a819a3a342f084b7. 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/QZWFK2378429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ff82e474b18ea0dc4796a2c680585dea50d7045eced4061549a70a5d9ccdb1. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZWFK2378430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1a383179e8ca6015bca52727970dc8c461edad4f9b0daedfd4f386826b9e69. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZWFK2378432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1fb8888b467ce9cef8e108d4094e36867c9b3a69fac897c8c793c8ba035ef5. 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/QZWFK2378434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1918da76738832ad365217557e8b059dd48ff931cbd1898468901a1185c54bad. 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/FR6V80878565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6512b37d01ab6bebbc9a6bc904608b0b0e7a9b6a971eace74f3e21b49b93a43b. 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/NL8RL2441232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0222cc4eaa46c557b027e3e0f9ba42072d1fe801f883a3c42f19b777735eac7. 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/USA2P1692184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dffff95c7efe4446a35dc2e500c602c0006ac5fcdd055aff4b0106f0a17e4ee. 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/FR6V80228590.