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 0x05e70e0595bc08cf8de1fb082d64a8079bb89a06bfa56918a6b22212c25d2cd4. 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/e767f845-9843-498f-b5fd-805c9178a06b.json and https://artists.proofprofile.net/proofs/artist/e767f845-9843-498f-b5fd-805c9178a06b.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 0x80f476a7aa37370bcb0031fc651d9bc8171035b54c7d8536d7d7acd199b984a8. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USCGJ2073635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597a5ea06110caae88b48c73168fdb05fe5935dfa17d4faa33f7c9706d849a9f. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USCGJ2073636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a29c937e316bc34e4c418c20b64cf66204d768cb104d5392111de98d3cf031. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USCGJ2073638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4276ec786fe55777b1982431e861dcda2af141e167d2df6e2ce1683b1332f5d2. 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/USCGJ2073640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9dde6fc716edac3680b38da64031a2983921a109b82f9a82139b9b768a25b3. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:04:48Z), 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/USCGJ2073648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb669b7388d39d8d4b9f7e984b89a420f971171c868a1a80aabb145bff56fda7b. 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/QZFZ72373859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9fa4f879978f7798144e487018941522fe52f7f9805a95cf051c4b0c367efd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:01:15Z), 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/CLJG21600282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42ab1977072f5bffdd5b09431e101ddb446281b66e88be212b106b75b66eae7. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:25:03Z), 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/CLJG21600285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584350bee97adc87d52276b47cf9abe3bdb59e1e180e3cd633a914cad5c1d53b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ARC571901180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed609c4a3e33f4bf36bc89bce98f724067b4c9d3ad96c80c376c94fddafbc3ad. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:20:24Z), 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/ARC571901181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605c9c6ef349d94a974a6ee1be52ac9ab0a963fd8537d2282ac6801b285874f8. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/ARC571901186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ebb781b9cd3757ac6609b45622b740911bc0dabedf5a7949d5c76bbdc4db09. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTB32392650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd871791935926901166264677244b84259aca73889c17a73b906d6917982ecb8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZMER2469563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e87cd5ff96a4dde124b87230f3fb0dce7699cc6cd6085386607cde50339c32c. 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/QZES82523078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed3ff7057eb4962668681f789fbab85c283780c6bfb44f1b8d2555055466a72. 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/QZZ7R2518408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa952a738d2eac73d2ced6bdb390872033f3ad053ab952c4a84e07f42be6f11e1. 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/ART0G2004163.
Atomic Chile: Tributo Chileno a Bad Religion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625a011fb775ebddf29a56984ecc1a4f9ae729fa3547e1cbae788b0370c6e346. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USCGH2428676.
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