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 0xd399494c8f2df23805c4fa0d8bfceb0a0dd91f8e89dffe96e6de74eff154ef9e. 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/3189cce0-c6f9-471f-9136-ddfe2233cfa1.json and https://artists.proofprofile.net/proofs/artist/3189cce0-c6f9-471f-9136-ddfe2233cfa1.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 0x29a3618882e0630a0b142ae1b1f1838cb1cafcd6fc8a5c1dcf8016b265c27f2e. 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/FR59R1910531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bdae0210230b74d6fbc3e72a0e90ba87be9883420e722b1a8473cad906c74c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR2X41996832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56e1673cc9187958cb7b2cdaa8af789f83c9ba65e885f2ae98b38d558699256. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR59R1910493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6804c6bbf6ab6b06ad8c5bb721b79173c6f3d761407c9ce78c16881ce09f26. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:26:22Z), 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/FR59R1905061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd406cb671c81df0767eaab7c1ceadea39c85d4dd9fb59f56385669d22a9b6929. 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/FR59R1910537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d132f24f39030835b7168cccb22ec900681d3188998872a1bc13c3e2b9ce93e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR59R1910538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891bfcf5eb7ca1f39b9649a1bf7e0dd8ca9c7aab352c6fd57bde7b8b79a51ae7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR59R1905033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72d8a34169cd47e260f79372126e8f2cb9d9019859e66179ba4d7b067bd0a06. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR59R1905038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ecb67bf2e5bb785a31cc41bbe32cb963db9f4f0566fea17310deb507d40a5d. 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/FR59R1951629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa284659056c78635c508f0ee2a9d7f378649ae69d0bf588c942351911a21e647. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/FR59R1905041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c1e54856dbe9247f7117a161e1fb5a95f0123f1c329696f84ab515cbe6f62a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:42:59Z), 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/FR59R1905043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e4cb5adbaac4d1c38534f5f4f6a1720cc53a95494189efc40a2088326e860f. 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/FR10S2508399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3902b1b2820aadb2f9fec929444be682f5abfef848475fcc8060e1dec09c66ca. 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/QZWFL2365326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa430517ba6398bd37e7e3f743c90507be22e5a7828d0fd01e1bc0995af587486. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA082440347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb24f91e2fc7897c478cbeb07157c2f008e79e3e26475430a275d5344057571. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/DGA082440394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034a49753510d78c231fcbe0e05603ad9f938964677a04137c2c01825d633396. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:06:35Z), 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/DGA082440319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed442b6715ca6a6e4a1fd626a0935e32b2fd3f00f7f67a2c2394c6b0bc9f739b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DGA082440356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e545f4096a56da4f0412103ff8bdc94b5602748fba2720ff42b7bdbe31fccd3. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/DGA082440358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f278badeef8ec1d36228800a7569b2cc42fd8ff393e38a9c1f04fde731acaf. 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/DGA082440401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0fb5f7c8f460f2805891873d9b9f63f274f3a879ff992ae82c6ae1fcc26550. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA082440348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4380e6959ce0e971095b32b87846eaf7a52bed19cbf6136c07a6e0c7f648dbc0. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DGA082442919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5160ae55a6ac9c0a760b5f8591bf8bac44a1bf241d001d97e57d53ae2731ce3b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA0P2478114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be805cb52a3a77bad5dbd2ab9bb162db82e910ddd11b1184858d4c3c890d06e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR10S2577536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad7953ce8b3cd8cf40ed7e1e9c039d4aa88fa8b1d3bb107346f5e7bf0b98f7c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMBZ92502820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63841467e1b8c778e2c41dc88020ad427623542b4dc7d00d4b01bea7470ac0cf. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QMBZ92502824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a10d5e9656ba5189d9cd210edd13c1fb33f26b08030b6180dfd0754fd7ea8b. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QMBZ92561158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026aaafef4123234f89d46c06cc8deefdcef75e381be3b01c07608f60803f797. 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/QMFME2502367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ac2adf3ff55bbffd15e9bb5f220d11f34db436b4caaf9024b7a7eb62244668. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:15Z), 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/QMFME2502368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aaca8ca7b6271fee183cf635c408060dfee663d6c1e7934295f50fe8190b47. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:59:16Z), 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/QMFME2502369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516f25899e9702f37eb6ea9640b9d0d95c817fd502c4962238d5b63e934f3821. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMFME2502370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caf8164360166e48961f809bb41c7813e58e3012ef2f75622c841c1f525f3ca. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMFME2502371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515a45a87602071f47d41e61d7961d4110c3e99273a7217ae76e1fa03fe1bade. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QMFME2502372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8850eae003027a29671ba0e9e237f6c884ebbe24f30592d3fc13cdb02e3813. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QMFMF2507275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e118f4be8dc6e986f9dfd3363fa292da59b7d66ad0cf214ca2819a449e0ab5. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QMFME2573683.