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 0x3c5c76f36662a38075b0b576681a43a7659db577f2c4f814c2af7ce7c06b8abf. 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/915602bf-5d35-4d08-be17-a742e8a0a68a.json and https://artists.proofprofile.net/proofs/artist/915602bf-5d35-4d08-be17-a742e8a0a68a.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 0x2eef0244a4be2cc12700ae6b0bf9fa52a2d35862e41b03e22f27a879beedf07e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:26:10Z), 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/CA5KR1838823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f41588de781ae03bfc302a95b49571513f5b251472c72d2328c63ddb2678b5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CA5KR1838826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b251d8424c8335ccdbe50c52371d5295ee3ab5aa6e4dadedb531b2448d6ba6f. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:27Z), 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/US3DF1852604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a471c831b3ff8521a316002c08ab8b77dea28f2d650b462ded308ceac9ca7c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/US3DF1852605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c2ffce9329b44d2308aba6449d9b23e065dd7e0c64ee05a92591d24e4db63c. 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/US3DF1852612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f61169bae244d9c4564c191923c52b4ae0f95051d0b1298375d0f5e266d11b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:50Z), 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/US3DF1852615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6147e242b9ae4ba910a7e2c9e06e678e619a7ea0bb59cc1546b816481f1325ac. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/US3DF1852618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc159bb1d7d47661ee6f7a557bae581b47f94b5cc888776c21dcb3ae0bf11d201. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CA5KR1953007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2c08be8cd6890dec5d541691d7855d380bc109cafde1c74527f24641a2a650. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:33:59Z), 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/CA5KR1953009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d1275fb72887484b70a9e107b098c4e04ca854b70612cb717a4a6bf7985706. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:36:23Z), 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/CA5KR1953016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c15c9dc7a3491da9c8a2eef525edf96685f35ccacd7d943243b5b6ad6118d65. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:02:17Z), 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/CA5KR1953017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab109b6142b918c1df5693d11e620f4d02a5e015507ae0285c15d386aa671a0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CA5KR1961111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb8e842661f79308c6cc14e46d67b33b34a90caff91f455ee48b95e95dd706d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:07:47Z), 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/CA5KR1961121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3c163556d54a319d62896e79df53c69ac4ec0f61b773015ca544246d00382c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CA5KR2002353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33befa26c5ab07bf99b7e38572ed1a6a87e0de3f8a6df2839fec7205b2f68059. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CA5KR2213189.
Asi Se Baila en Tzocohuite Ver. (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639c1e3825b03861b85393d26b24108ba4ef150b7c9e6f79b746dd7455e36024. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZW9M2315981.