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 0x3479fd27b9527d583398c4d97ba2b1e0f018aa48dcb299c104cdae6e1ff40374. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e3653d0-10b0-4655-b1c0-c0b101fb6dd5.json and https://artists.proofprofile.net/proofs/artist/6e3653d0-10b0-4655-b1c0-c0b101fb6dd5.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 0x2701345eead74a7fecda88ee6ba8d3a2f013c7fb9174872f365d7d0c269387e5. 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/USHMD2028003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b72d060bdf65d1ff20d283f71071070e1306ed515fbf928fd6994029b153670. 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/USHMD2028914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42947947e7aae6cac7dd6fb776f53515bf90af99261c2abfcfb8dcb5d6d66830. 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/USHMD2028919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32afc00b3aa3be7f1b2cd32e971688a5ac456beabe58ee091f4e0ce3dd70e319. 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/USHMD2028921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d2b372f1bd9ebbf5c96e376b9af35613b465e9156c59f57a2ec74b88a07c7a. 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/USHMD2028928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb849c6c07d3fcc6cee6ad524495ff0611613b92f783b8c3b23d0264dfed89bb3. 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/USHMD2130402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0a1856a2a84323e36ef07b5c8c7e23d2f69be1840d1a18a8a4c4937baf0c47. 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/USHMD2130405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988b68afd407f9ec6ef1e62af46c5cc69e98a5bfe581ced530bfe2971d14f084. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHMD2130406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4a3945ea10d19fdbff62b12602566d5e0ab1a684a2cfb18cdde75a3d18038a. 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/USHMD2130407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247dbc3a4d91e40d19201434cccd5429eff71cab6ea31865d8decdacf976a729. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/USHMD2130401.
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 0x50c27529526675646e1695974206619a06115a2fe5705046c7d8c146431732e5. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USHMD2130403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5383936b855354694d33a01615b4772924ec6936fbc130c4316199818e74d06c. 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/USHMD2130404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71827c8b54f422d530c0a3f2c9ab8d7674ccb0c72038d118d2f51a8c3bf2b09e. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USHMD2130408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7523802ae023f2b136b3f5b766fd161a463bb2f0c67c33bb0d266c7a0b15d58d. 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/USHMD2128802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c99f0aa525e140c5610ff9bcd94d13447e04d79922f5881499fc537194b44a3. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USHMD2128801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc9d03e1330d0c525f8c296a58ee5d2e41d4222d30b973bbdfa743023399704. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USHMD2128803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2767bd10b19231ca50225e972bad365e543b7c21e2df9417edd74c7a5269b59. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USHMD2128804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2627fc6ae37d8641336498c9e153a6a30a5c804f07e0868c7a032583bd4dc02. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USHMD2128805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c00b9ff968bb0169c407be3606e1ce5e360b0e7a6fd327c0c470b7daf5a50b3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHMD1423002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a36f5426fe123b35b535804d2b23d27202baae52b7794be77c40a30f1ef8b7. 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/USHMD1423003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb5c5fcc7f0e45de455437328b2fab1b0a07580005f5546923d9cf6f4c2b33a. 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/USHMD1423005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b389011f2d592ff421c7d64fe4c5df8b95087d6107705e42354db901aab4564. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USHMD1423001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ee0d86d52cd341b0d3a596302c096ee1c743af8fafa80b4180fb3399548e7f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USHMD1423004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91ab5651f472edcd2bcd2322a752f5ef9317d70a401472c351be2c2d3f9b09e. 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/USHMD1423008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24823e7068d6419023098b064f7de10e894a2abcf67abf8da18d559c73c95812. 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/USHMD1018103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c44c0561d36c600a0822b7069a94b4683570212b5ee8554ac57753c3de9c9e5. 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/USHMD1018106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb394c8e5b77ea2e3f36245da9e7db12219e65b19b7199546e562cdda8e5aef04. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHMD1018107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822ca30af354e7f0b46d54aa484b8d38046f502f1e65cbb7fdac19199457332d. 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/USHMD1018108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24145678976ad580a07e68a31c5cb749d6b9917136607d1b6f0381b9fb54a773. 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/USHMD1018109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cd83f2c5533d51fcbbe3d527eb0399507c940fca639e35fab454c5fa936bb6. 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/USHMD1018101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ab6720718b8cd899e1f1100a4a8ddc442db46792147d5e0ec7a16dc915adbc. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USHMD1018102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c645aa840ff04d47c73d576c3a867fa8bf2a87d0fc608a58dad704128e5cf4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHMD1018104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427c2f94899cf649630f7c9d65ceb30523bb56e59421cfc67eef4e3ffa06368b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USHMD1018105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b155d5c744b1c6efbbfc5fb8a982ed4bd4108a1f11c0c3f1e9feb2c3839d532. 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/USA2B2058407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cee80324139f0ecb36c61c9e29644b96a29c5ee3e7a00d24e6cf5594bc5283f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZYWF9900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1c172687c33aa704d4db8b92aac789c5d5de819de44cf8c4e08ad890e0ee7f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZYWF9900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb2a2c71c56362c039cba6d45e410d43cf68b7aac3a7833de68bf4d3036391b. 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/QZYWF9900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98b46bd7f9cfa8024e4a92936b4e256c06d136441121b181372c2b0879336df. 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/QZYWF9900210.
Voices of Cornwall (en-sol - Arise!), Vol. 3