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 0xd138225cf7edc54f8cc13f23fdabae41c8c915ac2a8ad0eda95f32de0f899193. 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/6a7681b4-01e5-4a63-b7cb-c31c588c4b77.json and https://artists.proofprofile.net/proofs/artist/6a7681b4-01e5-4a63-b7cb-c31c588c4b77.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 0x48201c64d91e33ee69ca3a6e1bf42007a73c9a690336cfa3c6ebe9b49dc0a1cd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBMA22343662.
Sho Shallow - HB Freestyle (Season 6) Pt.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5dcaf2545a8c8ae0a3b7f682ff4a3e93d46f3291426da91bbdb19580701d7e. 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/SE6HN2402869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7085f1686deeacecdc803d1faa3f46c284d814549c9e2d381dc842e864fb06b8. 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/SE6HN2402868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bf6365038b96415e28b361c33a99f85781a405871cf650de53ca6497c7adef. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:56:59Z), 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/GX53U2512151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe03f1efe14b5c6b8270c1d0e8f8f89b5f16ad6e231c5e6829a734dcb2ab7daf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCACU1665156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77e5f672235f72a5319c15e879d3ef740198890c974d823e2cb6344c366e9eb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCACU1665171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2646161305cb000597585c772b0afff958649ce2aa493889c70e609df59ce1. 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/TCACX1700282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc483d8c80b808497928a3232a8c673d4a1037e6eebf03163ea6cf2b5d2af9b0f. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/TCACX1700231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdcf1edf8131367d99489ca2f9cb747adb1ff455410b466b7fe9c5d609ca6a5. 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/GBLFP1579947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2baf3a79a4a6872ed16206ed974ebbda61e2139604c73507f4d6613dbc242. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:49:34Z), 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/TCACU1665164.
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 0x1e9a512eb645f5003e719e912bb57cdffcc0268f58c8bdc5f6be5328bcf9fa1d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCADB1728436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a8ed0ce740f8dfe3cad163cf62caf75c0201a4644e1484707ab8c0887ba4b4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UKXN22048354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb9b523cbddb44a14e580952ab3f02b12d432d11ffc00dbeef91b59aeb4d1fa. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/TCACX1700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c13080ae6b145a9fc88ef7515ceae846682a3cdf19a2ff78c00f6f6f755c8ca. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCACX1700216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c447196b7358a0094d9e27ead224d11730c8f487bd82b3e1fc959a7c5c69d48. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCACN1650236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0703579d915f95fdd2f9b7fd7914461259f051c75adb1ece884eb6d616a330d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TCABP1319601.