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 0xb810c03c59ed157d486e704fe999f95a73884fa6df6d9bf354c97e3c83f63785. 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/b9ee909e-0499-42f6-b06a-048a92186e14.json and https://artists.proofprofile.net/proofs/artist/b9ee909e-0499-42f6-b06a-048a92186e14.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 0xb1faea80a067046e1b33ec81ddb3fedca99afc331bf0c53f5f0bb73934b409b8. 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/QMGVJ2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a829df7e26f695ec716510b364b4fdd15b9fc2c30a496274a5dcbd0050fd08. 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/QMGVJ2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664d9240f7c77a3caaa6686392f93ca66010786b631bfbebe5acaeb6a44612c8. 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/QMGVJ2100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f34793bef8d136c63369a187577734e3a35e70c85bc45205248f74d57549667. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMGVJ2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5706452f596af6d8990952256c6662cc8d1cbbbdf5ae688cafb4688541124836. 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/QMGVJ2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519a90d6d6a47ea97cc766dbc9befb920c2303f5a836424999f8aeb485d1099b. 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/QMGVJ2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a0d19ace977fe366e9aab7a6df252d9a933a90dccf4da78c13882fc175110c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMGVJ2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2c33511a140bad1da7c0a46c5d99e56f069f3fd99c123f092c36d78f2a7ee0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:56:11Z), 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/QMGVJ2100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1e4fcefe1012eaf002c7de1fb398485b40c68244607a44dddcee66c2a6f997. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QMGVJ2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9202573d779463f46264ff425d27cf896a105056ffaebbdbacce0dda565222. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFYX1988515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9961d2fd6d18b93d1591b09a577cfc7bbf6765042aa2c9ef2b0690e3c9c9f5. 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/QZFYX1988516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d26b55e05979d5d6a46e8abf18d97f44d582577ee00fafa421078bed3424739. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFYX1988517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318e6c3fb363a1ba7ec798ff4dc41521b6c838f01c4317a5c5764c4801e0aa29. 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/QZFYX1988518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8166eab413aad119cb7161dd48a3ce92b1eb0989767bf9c03735847621c54bef. 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/QZFYX1988519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a06fec8bdffbda28184f74215aeac3872a08a09ec860ffda78315357526b5d5. 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/QZFYX1988520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9477817843da5ebf3986a80e10dd8957845df4d7431bc0ed47ce4729e8fd5d4d. 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/QZFYX1988521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0621095ab54c7bf42f86e950c4be5deebd3b7e825ff3bf4b71c54f6443e2c35. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFYX1988522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d1dd73d4063599e05f959bb9bfa248654cfe06e28f7b3db075f31363882504. 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/QZFYX1988523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a852c369315058b1e18cdedc0cf9e4520ce85e8486ce513b29613b66d340e6. 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/QZFYX1988524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a62147c745b59d09b5033faaca1c978e7f6bbc72fded3b25b8c4298dd2fcaf. 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/QZFYX1988525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb384be6981e40e029f68c15c2142fe4ed6ae3c10afc51ce312a2d545d9ef88. 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/QZFYX1988526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ec5925b80432a3a490a5f9091e7958f6fb3c3bfbe4198f8c310441c2e5258e. 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/QZFYX1988527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664d9240f7c77a3caaa6686392f93ca66010786b631bfbebe5acaeb6a44612c8. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QMGVJ2100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a829df7e26f695ec716510b364b4fdd15b9fc2c30a496274a5dcbd0050fd08. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMGVJ2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519a90d6d6a47ea97cc766dbc9befb920c2303f5a836424999f8aeb485d1099b. Chain 2 (Bitcoin): anchored in block 957304 (2026-07-09T12:19:34Z), 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/QMGVJ2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5706452f596af6d8990952256c6662cc8d1cbbbdf5ae688cafb4688541124836. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMGVJ2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a829df7e26f695ec716510b364b4fdd15b9fc2c30a496274a5dcbd0050fd08. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMGVJ2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a829df7e26f695ec716510b364b4fdd15b9fc2c30a496274a5dcbd0050fd08. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:31:25Z), 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/QMGVJ2100036.