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 0x8bb9c936683b365f023188091ace972aa3fcd56ca7da7534654a308801b5eb24. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4c8118a-32ea-4d69-a5d5-c50b8b3d139e.json and https://artists.proofprofile.net/proofs/artist/b4c8118a-32ea-4d69-a5d5-c50b8b3d139e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Alma Negra y los Éxitos de Gabriel Raymon
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 0x500bbf0da13701a36d6e54b762a8f5a238c82c2f8a7f82f974c2387f80a49ffb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHZ42204425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017cd8c3767d92cab3459c73e609eefa6f1559c2a3b92cdf9ae8e425c768a8f7. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:05:52Z), 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/QZHZ42204428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abdd16d54e2049bb12286461943c996efddd1af1c35e737a541d90a332dba21. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:23:45Z), 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/QZHZ42204431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded1f819b507faa75ddb15b56617f2858bb143b2b17c21d30328737b118a81d1. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:55:27Z), 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/QZHZ42204433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded1f819b507faa75ddb15b56617f2858bb143b2b17c21d30328737b118a81d1. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:25:27Z), 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/QZHZ42204433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d1e0b50ce56678b7921541a8b674a29c22dd69e8a0588b182a07cb75a9652f. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/VED017900435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2393a99c5d83431d3c490886f4d240d4845daf89c73494c70efff3ba1b16c30c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/VED017901034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f97fe7f529d8163c8ed0e91f54dff6ca1792c8d2c61483672b2783a08c9f95. 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/FRX991580837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28797edf8bec861b6216cb7986ccb1e59126889787004be5386c41de149f6505. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR96X1797653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6310b812c9631bead6df5ea07940b74a6747dca6ddb08a38f1f2fdc487f12af4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR96X1797663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d448e7ba4759ba1d26b8bdf1562dd081577c026e9ea5e7ae87649916a53fa3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR96X1797699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc401f7a33c1baea8b05a291917ea5c6b2d7d62d2cef41b6c16641f55670fadf7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR96X1797701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267fe9c2f70f356f39255301ac914e7aadb9fe3cc2e7be34521b003c7a947718. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/FR96X1797704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7609cab06c5d8e90415375ead2702884ba7438aef9046805a5095691ae1f3d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:03:59Z), 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/FR96X1797705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400aed3a538025437b14fe3f252e6e1b9fabddcc556c55a7cfe3977bca844a91. 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/ESA011941224.