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 0xf42bdba7bdcad9f30ec5fcadf0535c6611f0e686f06e10f22e2eb921e78e3fe7. 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/ac23741f-0623-4d31-8207-400c1ed4d1ae.json and https://artists.proofprofile.net/proofs/artist/ac23741f-0623-4d31-8207-400c1ed4d1ae.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 0x79428b101bc47458df3d8c89f9ca8b2ccb2fa2fd9f309c006436823c328758f4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMBZ92033495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ab336ba1ac58bfb85f8fcac638e46c324aafebfcfdb5431ae5b6694658775d. 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/QMBZ92033497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79428b101bc47458df3d8c89f9ca8b2ccb2fa2fd9f309c006436823c328758f4. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:47Z), 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/QMBZ92033495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eadb16290366a4b00379b737131b3b7ff2f1b612406c51af0a6d47e6d4a89b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QMBZ92033504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d8c16e283e3a29af83f74b97907eae555f7e508b63876c564935d0bb7c974b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFMF2003023.
For All The Gold That Is Beneath The Moon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f88c1b89cf76d0ddbf37f71304d909ec231915bdc08e226758ec0c39ac01612. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TW2347786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e461868dd5ed612ce8203271bdb123b6a9512755c95d973bab315bb71b461d0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QMFME2397766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ae33b6f72f3f7f12784894ca3668930d21f4299d8c12d65e09e9aaefd88170. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMFME2397767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d93d3c42dd14e0fb95ddd0002b7df0a0b6eb05f631fbf0c102c6c4d65d1a3f7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMFME2397768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c75ab0d0d82756513968ac062d3fececd0a61196953c5dd4f6bd12ca106cc68. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMFME2397769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58ab1b50b30b6a79e4e8da716d699f39d2ccfd06a040137c2592263ce821454. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QMFME2397770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb9502bd0de56df321e3eadf86e89b4adf307398202bf1e0fd1f80fd470107e. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:22:06Z), 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/QMFME2397773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28caf567b05f2beac89c827357bedca722afefeb315a411beea168de8c687743. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMFME2397774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d31f799aedd3b3bc53c5849498ebaedf92c6ee4304405dff7b3c32ad32d881. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMFME2397775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf304e03c5590a0d1da8bc691d9db98f8a63c59d5e981376dafa111a9803268. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFME2397776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536451e7e63f91fbaee42b38f9e20ec74c108f0fc1db8769f9b0fa229d6f8e77. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMFME2397777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37d7e5cd387acd728322ec9ea81a11f0e34bd840b3b4c654530c47e84f18bd4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMFME2397778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25e734ffe1941ec71affb91e4b92c9efd4c4e2a9df541e04d49ef603e50251e. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QMFME2397779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2133b26a598f92b9901dfb07d01f88e35c2271e1f33c156b7a6bce0a92dfc40e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMFME2397780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cdd7b166cd73c834d9d5f0c819767af55a263b206dcaea560ec78f895c8a1f. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/QMFME2397781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79052b74d73e9337ffe9f7e796d007f055f5f215735ca0503e9b89f8c73abac7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMFME2397782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd264a6eb67c2089608dc117f0e8a3c1ed3fd05de7802500cc38d8bee372cf4. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QMFME2397783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdd93edf866fa7ef14e2b1539b475e801f2b502d7e4d99daf3587285a3303bf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMFME2397784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a45bb5eff8b9553f1a98225e21e432cf49d8f77b57a98d5ac8daa19d64aa7d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMFME2397785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3464ad6fe15ef6da0fcb7fd80227b434efca61b782345ed49ca9fb9cdff931. 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/QMFME2397786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38adcf21724d445acf61da66c32786818530ad57aa1c980da9d2d7f6e203ef7. 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/QMFME2397787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba69cbe0b8b4047f1c57a169a5db51b449ec17bc3b6ffde703c34e94b0123ac3. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QMFME2397788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a06b031130eba08e588a99042935ff64ff7f9a9117bfde51e77c3be97db23d. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QMFME2397789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367e2f3cbfe41a28180584b67126069c3f84f987f91d2c1858bbc627873a2d11. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QMFME2397790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07463306a5cd05239b9e485185854488caf4d4bef56a78338172ee413594613a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QMFME2397791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07708dd0de3ab536dfcb68e06a5a38619b1b5bcdbd365ad452c3144478017933. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QMFME2397792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0521253720485a3321c18e3f7627d6d93e0cd9b126e5b4a28b818f8230a8fe5. 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/QMFME2397793.