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 0xf25238f23a0d0cb7a778b3d7f01ec58aca0e1e025bde81e7384a3b6010f79e65. Chain 2 (Bitcoin): anchored in block 953978 (2026-06-16T17:11:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bb91733-d9fd-48c2-85be-0737b852fb05.json and https://artists.proofprofile.net/proofs/artist/2bb91733-d9fd-48c2-85be-0737b852fb05.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 0x2d6a2639c5de068b4842642b1fa0c26d87c9a8e770af140d18cb538198d5947b. 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/TCABN1341194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc503d5257a5b7691da843c43eedde54f7c21c1a0ba02af67aecac9923350d0e5. 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/TCABN1341195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc06440b33f95a393f010598976c29786710c3071303ab1a714ee5793c52c40. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCABN1341197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44011bbb55666cf42a934b21476b2a8a16edc97066d7ba01cce5b22506dc95c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCABN1341213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dd91ef6053f2764565808dff0ab9eb38ea8cd47360a9c848a9af0c3576e096. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCABN1341199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf340ae640a429cec7800f45d2bff687ae140b8e70c1cdfbaf4b9f5a375ffe1f. 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/TCABN1341203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a03738cf081494a52afe6d35d9753d45381685b98482546ee1647dead8ef8ed. 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/TCABH1224838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f85dae2539d90233618f11ad01fe46300859bb5d5372b94f5522a02674a8dd. 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/TCABH1224842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e0aba7ae2b455d19c07d3bb4152e15d6dd3e54c7d7489296ea7de09c7655f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCABH1224849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b92b434e3cfcc3a4bc658580c10ca2b1cc6f3e32b8686b11c230b5d79f8c8e. 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/TCABH1224853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf7cc222e3b588a5dab59db866d4d0ccf8f99ec9bee5851fc92b736bd8f3994. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/TCABH1224855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2fca5ad62cff9d1cbde9a9d7c6fb223e3a38310be800a304241c817b7b1e60. 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/TCABH1224860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5874acfc473b3c5684c69cdb18a8ffc5ac0b8195220a79f9d6eec7951c7d2d53. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TCABH1224840.
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 0x8cc580e93484f91e3261f7931f13e2512efe6655d55beb41364c456da9311f21. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCGJ1232389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827735e0c6cbdb45f1abc8a540dab86be4dca0fbec9e3140604fe51457cd3cee. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USCGJ1232382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec373ced865ae2a4c8d1e82b6bb33b7f2fb1ceb3a296602bfe3d5a0023942102. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USCGJ1232383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e08c270ed84558db011224e93b01217fd3d03d8de8c21809925cee8cf6a176. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USCGJ1232384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7a274709a101e3a75202b944ee8ec76b34e014519c681b6489c836868fcc7a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USCGJ1232386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd422711fdd00e84c4c79c3b2c6349fa85eaa18fb9746399f7f47a6856cae85. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/USCGJ1232394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b67725522bcda7f14e3573782111b488ee95dc42e5e3a8e03674fc03316a39. 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/QZES71852835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbc2e646fe269133170b12c314c254ccf5f769b290fad25646bf597a413a0a3. 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/QZES71852837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f75e53767a5b3343eff99a1f2765df8baba82b6af1aad1643c87a22ad399f1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES71852839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781a450b3f91fac9e1f8d4f057260184f2e5b819e537379a85ba0f0bd6bd14d1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES71852840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bc78a661477a50d90d032befecb4b6d0d8bfaa0613cc6255d7a57caf5d1df6. 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/QZES71868034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5cfdaea728ccdcba9108d6c782ca0e251b954abd26bdb33f6ee72694c651ca. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES71868035.
Profundo Records Ent.: Fuera De La Rutina