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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22a5a8710f87dfad0b57237aa7dbc84ffc269334b23641de2ee7529e246daf1. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea1e850b-537d-4976-9fde-9cbf5436d952.json and https://artists.proofprofile.net/proofs/artist/ea1e850b-537d-4976-9fde-9cbf5436d952.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373288c4b8c670068c83bc229c4366d3af54deb5d8f7a5d3cb048b65d0c61731. 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/HUB001500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48416f6787df7aefddf77bdadc9622ec43830211ef3f2134522ad7ccab7cbf75. 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/HUUM70900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462b6736e8110f010fad20e454ee15854d4200a632cc68d264753901da878414. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/HUA010400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ec3a0283f78ff772a318074fe3484d2bef55c87dfae6c8b1bd55f42445ac18. 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/AUZS21100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d26c6c805ff475bb76c1fe9a33ef096ab0d2ec079a7d7a21a2e49f0881494d. 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/USUM72017013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd104c6bd3d8f7749c513c51a2e0831e66f6439b1c10f8a876872142f8112d3. 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/USJAY0300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4100fd4f61adc945a3dfae16edffbb501a4939e38fffbf96defc6cbe0c4dbf7. 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/GBUM71301823.
All Good Things (Come To An End) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2489b1c52cae0d88d8d247f1b61c0b006d8f10417c0a1c97d88f4cb7c32454b3. 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/USUM70613054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5485b71084493641ab6251e8eb4ab032baace7efbf2ea24b4a5ea6d802d04125. 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/USUM72003826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaa485ed5d823330ff5521308e26dfca119f805a6e3939d298e662ecf3f9d18. 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/HUUM71300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3222309d3896905c53d8a5d4fe76d1b48ad35bf1250f7dff9fb2ce8b750b38. 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/HUUM71300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9e1a3af898cb3fd271e9f658c19a1f78d63863d583338b671db2dae6b6238d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECE72402483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ad7c6be514c70090ec3961defd3183e8e202832e155b5fd9bd0c844b0fa616. 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/SEUM72300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc140cb0e7a65c6f279bf5373579f857b32304f40a920f4d5de21a37319fd3ee2. 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/HUUM71800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb886249ee6831f148960c6356b789c958eecbdbdf8c185e3c2c58c2b6c7cf9e. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/HUUM71600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c41bd58b7d03a856f81ace2de27efeff93664150d2b9dac75b9cb0847cc367. 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/HUUM71300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaa46ef01107f57df26afdcdbb3e4a0e02cfbec0e75919ff062ea1d7495cde8. 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/HUA181502601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373288c4b8c670068c83bc229c4366d3af54deb5d8f7a5d3cb048b65d0c61731. 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/HUB001500115.
It's Beginning To Look A Lot Like Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d54732edf90b4510b23e049c4689315745ff5e842a3f2791a392076677f3160. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/HUUM71500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1731cba70bf702703dd8c89f2893ba5d5a2cbe1f7aa090a5a2dd4826d6d98527. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/HUUM71500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc165313680c04b2191b9cc858a67b856a3cfdd71c1fdaa0ec3e31a9120e2dcf3. 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/HUUM71300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad07eca7c3f79cd0aa79fe5a3a59679d27e2ea053d6f504efae439303091c11. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/HUUM71300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b718de8b00f6306765f3c193d34c9d7b1d1c69fc3faff2b8b8dd8e2318d1654. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/HUUM71300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b1b7b080cdd6740ce5b524927066f51731461914e3ad22227fbf6b1811386d. 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/HUUM71300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2082a1c1f6edff969fd5584d9e3e1cbc7aa4339442ed38d8841ee42c43ae1e3. 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/HUUM71300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0600691928a5048292cba49c90ddfdc6ec7b90c524e91fab4bd2f6b4ba4ae91. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/HUUM71300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80887a89e9a73d00980e6ea4571e30af0d2d8c36a565f5c3b3a7bda721a96de. 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/HUUM71300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1d517338d1f8a47ad8caa72ef87b378cc881ceb1810893f2933b7085937891. 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/HUUM71300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0da2cf427b39256f420bcfe2f5750b19b34fa251f74fafced8cd78038c2b9f. 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/HUUM71300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4928f0988c8b7b02e9353ea146ff269d769cde9f49400e69c572015d5ee0d7. 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/HUA182431901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c147507e79b3213c981a43e4c73aa90d2b5a37d93e0ab4fceab985d392e6d8. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/HUMAG2300364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb395899c79506ff6420ba6c81533010221fa422199683a650216b77b880bd74c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HUA182324501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2dcdbdab704ebd5880fdd75a1c67df88361413c72ad99356f1658d27e047d6. 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/HUMAG2300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa3accbc1b516daccba0d428700386cada75ba44c753b38689d46afe172594c. 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/HUA182219601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0df68c7819727ca7d756e88ba00fdaebcc4dfec794f3cecb7c763bd91ad8cc6. 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/HUA182117101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70099c5ed6c1352f160b5f79fd97d45e0b6ae203bd0cc79884e00094e05cebcd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HUA182012501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6c6dae73017868f38ae1da93ec96d35edae58876691698560fcd7484302e30. 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/HUUM71700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb886249ee6831f148960c6356b789c958eecbdbdf8c185e3c2c58c2b6c7cf9e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/HUUM71600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c41bd58b7d03a856f81ace2de27efeff93664150d2b9dac75b9cb0847cc367. 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/HUUM71300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d16f13901db8c4c26b8ed9dbe57eb79a2d86cdfbda2716d69a45c6bf6c19a93. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/HUA612102921.