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 0x22a6181d79ba3ecfa928f65bf0c07dd5f7075e82f2220e117b1e1e4e25c78ea7. 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/763d2d72-af98-4efd-9d32-fd9b79a967b2.json and https://artists.proofprofile.net/proofs/artist/763d2d72-af98-4efd-9d32-fd9b79a967b2.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 0x9755647dd8570c3f5c20173fd686db367986467a52577eb2196e7e0f6fb0bcb0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM21731375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a65a826eaf134a79b34059088b82636c08f6d0976c84b7c2df80a2e441cd86. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:04:17Z), 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/GBMA21857298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a65a826eaf134a79b34059088b82636c08f6d0976c84b7c2df80a2e441cd86. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:08:12Z), 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/GBMA21857298.
Deja de Estar Chingando (VII: Oda a la Crítica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cff6e46a7fe1e23d755265d43a1e105ebaedd21df9f287d13e4df2614cb7d75. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBMA21862840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cff6e46a7fe1e23d755265d43a1e105ebaedd21df9f287d13e4df2614cb7d75. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBMA21862840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda840905a05ac65ac1fa855243193c22aa6675cc0eb19d97d44d611fecb5373. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZW9L2210481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf984a6156cc1a109c5ba1d2a3fad002b143e513b98bd97c6e46e767c5b933b. 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/SGB502313922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca5a4513c187d6d553ca56028916467ba5230d07db3f762fcc343b62752dce0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SGW502355378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877200feac8b6cb95ca47fcbc871cfbd2dc2b5dba5fae61bff8854813924d694. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SGB502468341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf291fccd6e125d259496603149cf95ea5e1d51c05463bbe362e2ebd6131ae9. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXD7G2432011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe180843d7329836863c95339d0a64392b9e5eb403814f5f24598ffda4c7547fb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GXD7G2432013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5615f65fca68c5ce9e6651a02b8b21c3b0480612c4cc90309ddbd71bb15fb117. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:23:06Z), 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/GXD7G2459166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5443b23a681594bc7e6802b50fa8bed8891e93e7973c1f69bd867fcf2d48a0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXBAV2288204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6558ce6d3d2f956c50186cd3af711edc48fdf0c049241c40a333c442930559. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:46:07Z), 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/AEA3A2408651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9c11528543b072ca0f0d39c454054612be812c6f12517c1bee6de5fa17207a. 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/AEA3A2408656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faf0810934e254fb28ecfe729a4b9146f375df96b014ff2fa33f9162dc8c5d9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AEA3A2408657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dea98dedb668a4ff55a56d5e3a4873a33166a7399cbc40089f31727277334e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT5M22528609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0926d76291cb33f03daf9771d2b1c29b022df1f24e0afe4edb4106955943486e. 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/MXF152400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cee5a310578330c99336199282700119f7d5eb9ab0fa1e458522c50cf4776f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AR24O2200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c66215c1f3cdc11fe01c432d4efbc690bee783569dd6e623420731fd8560cb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX2357849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef6ff49d64d3db4b26036e33c5c8e8619802863203dc627668a8a91af35d366. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZ5FN2422530.
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