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 0x2f9b23802b9a3ba8ca6635a947539241f65db4016e72daa538801aed4f13310e. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e438d0cd-d462-4985-b112-154a63e65c54.json and https://artists.proofprofile.net/proofs/artist/e438d0cd-d462-4985-b112-154a63e65c54.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 0x244f549658328253f7dd365fc72e26bc02435310af1b2bba15d99bfaabe3f9af. 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/USGK40810003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7e8488fe12d67b8c46225f669db3d6cd2dbe53563f13a6300f6d57ae1766d1. 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/USGK40810004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a852dc81083fc61cebc5f04899f3af6b130386cb38aa39c595043146a23d94b. 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/USGK40810005.
Attaching Transmittals To Erection Drawings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010da070b508bfc01325998dae17da665d6680bb6899078b282bc8ea9108a892. 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/USGK40810006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6414464b643cd0e25e476b8a458809de8385859e110c3bd91d2c72063f180f. 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/USGK40810007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bfbdc6a64e23d64c9b781c585ae193626faca894f9d35a5c493cc1bc8b2b45. 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/USGK40610001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92cd5d5d0a1b93614595a61b87cd7ffc1e41b0badce23bca0dee45005c2755c. 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/USGK40610002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d312020dbc9da4ce8a813a7ab971a284c36476aafe6cda861016d003b351cc. 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/USGK40610003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22578f4f30046058b6acd6ab7b0faa2430c418a547eb5a65d2eb0c1cbb04f03. 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/USGK40610004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de1157a545074962ed0be0d75fc9a0e209fde4f096932bc80712e2224996701. 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/USGK40610005.
Holy Shit, I Can't Believe I Still Don't Have A Girlfriend
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a62398cd5c69ab2d657c6c8cf75bd60863504d9fb9b0635b04d5f816b38d917. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USGK40610008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb543b8e64b0eebdda063b692edef14ba3ecbaec992f066c7edc87ddfcbb0815f. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USGK40610010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1903c67df5a1b81cebbed2180f2c8157f68276c4dc65232aa19ed3338fd92397. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USGK40610012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813047be493654f34ef0cf34ce26872f82f5d7a4d2835771d5ec27f33e4e2643. 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/USGK40610017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2666f264d67b9522e47b715de6fbe6324626bf478da06d8e1f3ab50f348ca7a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USGK40610019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac94204d1f0d088e1a91fc7499417cf82622a7aaf3bd624651bf382e046b74f4. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/US4ZV1010112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8002c01c5ee7ab2b5a831737038c2b5ada0ad928bd75322723a28e716b4dc6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US4ZV1010113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22b9d523ce1b1facd06201f3bd004dd2bc7814f74ffc0fb91f0b700f72e420e. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/US4ZV1010114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1138403050c42d4065297880abc410ed64a34564b1cb6d983bc0374a1d23007a. 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/US4ZV1010115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef73b3edcfd16b3791fcf76f2f86a23e36e3ba3a6df7a7b45e4e31127871d055. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/US4ZV1010116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f862266290b19f7e37921ef5f211af4ed5c864eda5721e1ec308a9262cd68b2. 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/US4ZV1010117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f0c291a70dc20a03f3ecfe44cfcb3c1e26c6ede1d8a0fe8876e62e6225c105. 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/US4ZV1010118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448d5c65600b2e184049ee8adcd778d71a872f1e608bb5ee64eed0d33a6f889d. 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/US4ZV1010119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77bf4a671efe3c14158ac86cc4f3edf1059a6c0c05a07eeef559f707b1fc86f. 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/US4ZV1010120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30140279411e829c5f8fea84ceb10f221a21bdddb7dfe57bc5301b985ab067c. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/US4ZV1010121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb4c4438ee254546e6ccda9edeb97941ee49417244604a06ab52d5c0657552f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/US4ZV1010122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deb4e5f3bfaaf8f92244bd3e05720c7f76229fbac0ed2a2b210257cca74ae72. 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/US4ZV1010123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858a5f1ae2dc333029c36a8b9b88498db57114da83eca45cb51a28d2de5f4b1d. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/US4ZV1010124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0509f1af2c4e1991e7a9324ff34297273d79935dd6b1a3174b28f808e901e20. 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/US4ZV1010125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8586280868be21c7c5c93ec266bf34d3353fa988f4b2e07b360f45abcd992a3. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/US4ZV1010128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b652ed34e82c15b4ca5a733c904bd6d6376973be752ea2fa6b4811672fd866. 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/US4ZV1010129.
Debra Jean-I Didn't Get Invited To The Prom
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dfaa2f6a2ddeda0c361f139e729ebdf7dd392650907d49eabf7830a020ab30. 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/US4ZV1010131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2c1aca0d41a560c5c88d32aee600f7d877f4109242506fa85db262a7574d26. 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/US4ZV1010132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5151dcf57949052170ccf3cbb8349d204d673838ecbab17a94dcc3859df9e926. 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/US4ZV1010134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60026b70416950d1f22a84a76932a0f909595d9cbfa2f60ce9a1ead6f517678b. 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/US4ZV1010135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56805a9e707aee05d057372ae037c14a37cd35397e8966e882cc5d02458d6463. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US4ZV1010136.
The Best of Northern Soul, Vol. 4 (Edited Version)
She Tried to Kiss Me All I Could Do Was Run (Alternate Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd572f12995ed60b61ef8090a8c3d9225a477b1d8f994cee7a86702fbece6b8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM6N22116493.
My Heart's Not in It Anymore (Babe, Babe, Babe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945764ccc8af4de4d8e69c882da903a6c6a03eb80fb58e811537a910e73d9319. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM6N22116501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370b6f5bfc02fc0c3690ddd46a5d1d943e8cfd3846a6c91d74caa774859d257c. 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/QM6N22116497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bccf431edddbae876d9d522c5dcefdfdc25823f714bc7041e707d9832de9d8. 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/NLM930600056.