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 0x8a67a54905d8b269c6b9c4f5be907ac73bb2dbef7c514d668c2c11cd4de752e1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8dfe035d-b8ac-41c7-bdcb-a6ba64ef123e.json and https://artists.proofprofile.net/proofs/artist/8dfe035d-b8ac-41c7-bdcb-a6ba64ef123e.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 0x37415edc3b5d7e492f5cc3422e1197dc7411af704866d2340e70c216a7a9ab6c. 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/QZK6L2243971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7ad956867c9794b025dab90c22bc0227c3521b3915b3fb5f7d90a480696d61. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZK6L2243972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47304df138ce06d341ee0231ed2691f4c4c62a67954973ea478f7c8943c43e4. 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/QZK6L2243975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757d40bd8cebbf550917cb6c0101cc46814eb210e8c11d3c589dc3832e44323a. 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/QZK6L2243976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6013a138f4714268b2bebe76f3711e92f51f5fe2788c99ca5381599519d6ffb2. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZK6L2243973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215404d8e93eeceddc8989ee6b801504ef27da2cbc3a15a4d6d2522238b7154b. 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/QZMEM2149287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfde48537a79e0a298b701aa580e7e7c25f55fb3449c5f9ea1de49d7f0f8eb6. 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/QZK6Q1929307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e286c88edacfd058d34cd01b4738d6feb1c3f62a8d8935237a1ae5ac6f5a9a5. 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/QZK6Q1929313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaddd4a50e9cad85eff4931372375fa141eb1ed7f8462d63caaa60f19853a808. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTPX2442426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e36873464ea3e779c2fb81bf11ce663a8755c944956078f421cacbc44dd405. 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/QZNJV2499732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafef430ab6b5fa7bc9846ff806a8dfc550c58a9ca820fcf46456deae6d6cbc3c. 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/QZGLS2441085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fcb8f573a5838c1fcd67fc3325e70b02fb86253512dd153247714c7a1bef30. 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/QZNJY2476238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fcb8f573a5838c1fcd67fc3325e70b02fb86253512dd153247714c7a1bef30. 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/QZNJY2476238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e36873464ea3e779c2fb81bf11ce663a8755c944956078f421cacbc44dd405. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZNJV2499732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafef430ab6b5fa7bc9846ff806a8dfc550c58a9ca820fcf46456deae6d6cbc3c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS2441085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33719b392a3a0dbf633bac0bd04a27dcb2fc3fdb7490cb5392ef650719d7176. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US7VG2463536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b8b5ae91b44691b60651e0d224930abb6505a8547fdfa49425f3d349865be4. 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/QZW9K2366954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5e9ff483e3524b72dff6813243c26071b2c1673e8d8e58c619b0584c57b9b9. 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/QZNJV2327286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2571178a4ab2d271a1751f37336a29afa85af3da2def448ac688d2464a25875b. 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/QZNJX2308982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61567351210d46a3f2016f38fd0705ab0989982339b846bda564e4d62947ad9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJV2357465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829fd59aa06a864e0177b607df755e9aabb49452c1c37f47cd9fa693276bc5d0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJV2358048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea7bef1c5e03f8a8b4f5d313e07d80df16e1900f2498974dc8604c8257c5a2c. 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/QZGLS2326128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c291701205a40e85fa4a48d1a812ad3ade1d18f829cb91abdb73a7475afcbe9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ5AB2373369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cfdaf27dc899966c83512adcdf415362cff1c51c610fbea3dd7874da9d0320. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9K2257887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5586410831657921440707fb627b8079babe3267860fa59bd97adadb8ccfd4f. 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/QZW9K2257888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191aa7b742a13f665aedcca681495656454b02acb26139b22b6d9be4fd62af62. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJZ2288422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed79bd8b3574faf9236545383260b01be66293441177658ab2b3de6952fd7d3d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWU2122431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca01a0c78d80f5581bf2c369cab4802546bc1d0aeda56f7fd59ba16d37bfaab. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWU2122433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa264e6322e6255937c513be2f31f1b1324e4df03ccf4afcb9bd04519f6562bf8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6P2102428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2f73b469b023972cf605078bfb1c69acd79927fa8916f27fe86ff49a200113. 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/QZK6P2102429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206801f82cb17462524d6bfe2413600f2e7940566c2a6db33ea2a8ac2bf6570b. 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/QZK6P2102430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264dc62955a5014390c63d07fa35f6240900aa72287d9be39bb6889c91ea620b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6P2102431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf89cda9071b7ed4a5c0a37e67faa258d087a4d3d88878fed1f2f877626275b0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZDA82102500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24cfd000eae2ef0c1d72444c5b0c22ce2214078df8a8bcc1f0b92d09b50954d. 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/QZFZ62136317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b298783d0f96df4f0b512b71319667518627bf04283fa9fde6a36b4ef789548. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZNWS2011503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91a933e445447e5882202fea7b316482b78a6aec55622447770926931649af5. 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/QZK6Q2053826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cfe63d4fc75da2509f23959239905c3a630acae2cc2d399d097b873033e8bb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNA2010201.