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 0x1608525b87544dcbb5725957492fe407a1460397965205bbea1d3b08d71ec541. 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/c6d09d6a-78f0-4d56-bbf6-2aa63d08e3a2.json and https://artists.proofprofile.net/proofs/artist/c6d09d6a-78f0-4d56-bbf6-2aa63d08e3a2.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 0x3165c8918c55d756ea92c95ce66c3c3efbdb15616b50ca4278d2ae5bcc5e29d7. 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/QZNWU2444921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8d01df1930b3a4a4dc47cc6a18bd472868eb036774dcac8ce241d08f23e4c9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:33:54Z), 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/QZTBC2344270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965cd44eebbb28c150633661ebb498626a198974fb3625a9cbfa6191a91b8147. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTB82346894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7832c24fb5725eee583f74932d0e33e6ee4956bcdb41ee3f571253b7a6dcb861. 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/QZNWY2399250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ff75fefc9e0d3a654c3b1990d22c3c77c9a061f0aa1ded1738e09b391e5b8d. 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/QZTB42266084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d940ddaa8512ba69a074ff71c60c52d37db875eaee2c8199d0625db554e854. 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/QZNWS2269857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5878bf76ab7523f17173a5762df5e8b341b336108ac5542f0bcd0ecfebf1e8. 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/QZK6K2266802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa142362e798c26cdb85e61e0a4b8e5327037b5927242cd53d373460687ff7dc7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHNA2289769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07468fa100395d8828f233853bd0f002f0b9dca593787306b7e98bd84bf540a4. 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/QZHN52282535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a7c46e2449094225802033fe45108fb8bd712ef2e08b1e784fda49984400a1. 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/QZNWX2176584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd507b9d53e875749c0d109be41b84659d844f360642b8906eaf9f5335213a15e. 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/QZNWW2182203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7b9347bcb4c80227f61d681757d30c9da38dc1251de61765f8e63179e96fbc. 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/QZNWU2129184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541bce4d2c12b1fdb838bf504169c73e59b24dd359dbc5ed9accfa7bb89f45f1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWFH2390856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bed6dd6d3ac4fdbfb24f24fcc6801d105572836224d54ffa70ccb87a4275e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6F2164565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d61812539a1995c4da8b63d9ee86094683dcf461e60c2b5829e4055bdaa55c. 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/QZK6K2123771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2ad074fd96541b452cfface3d3688aa11e11f41d8acd91e13cbec51d5efddb. 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/QZHN72151946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c704a519b226c7cdef02f320da2102d406994e1c408a62750ae97e2f87cc63. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN32159005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5ae1151e2d0c7f4ab70e3991b9aabb8d3789ebd7c0e197bf058664d5ff7f0e. 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/QZHN32125724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d966f2a833e091cf7714279272b9fa2c4d6bfc4c28cc6dce138f7965e6a9a9. 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/QZHN32127069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3700ad41391fb509019d923899fb5b44d039299a28e9e67ee6f5b3c2effd80ab. 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/QZES92196120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ed51c7ce973c89f03108223062127d780d71caf28e7e962bcdf279042e2189. 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/QZWFH2388483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3783c1177b860e7bcf1341fd40c70e21cf77e85f95495f3bf262307b15dee4. 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/QZHN32127070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6437d7bc1aff5cdacbf899de417e98bb15addf656c052aacfdc12e5f81abcb69. 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/QZWFH2388487.