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 0x06e3a09c9270216aff62f67ec534d4f86996618c4ab686ae6ecaf4618f7beb1f. 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/4148d9bb-7ae9-44fa-9844-161e1c88567f.json and https://artists.proofprofile.net/proofs/artist/4148d9bb-7ae9-44fa-9844-161e1c88567f.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 0x2c4ada526785f2de80a0caf006bb8be8e0b608feb9a8b6ac8d9356f8ac1cd907. 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/TCAHC2317206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6fcc861c48dc334c327701f47c28c1a08510fa14d234bda8977b0f92cc0b33. 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/TCAHC2317195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dddfda2eaa27862fa6075733f12cf3fce433f96cf9a7a23569ede946f74f5a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAHC2317192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb2bec6a0a494ab5de1ad1abbc96801febf488859d73760da11e3b4986c908a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAHC2317202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcb3cff50e444ae2ca780de50c7e7c2b49f46670b639ee7f454f60a325984eb. 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/TCAHC2317186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eae88e9e75e9bd82ecc3381072c06020277f6559baa07b6051022f1d27048bd. 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/TCAHC2317122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb45fb78e2905a07e253e0404c0566d7d56e293d1a31dce05afbb9a3144c4c47. 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/TCAHC2317112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa5c9ba47115bb3aa30ad2571c22d95d34cb3e41185da48ef7f0473c4ff8c3f. 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/TCAHC2317198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645deff27cd81c74aa15010eb9f4da691578171fc0eda738908a7f79ecb91e45. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAHC2317107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc032e7fb1194f700e8ee331720641c5c31639b72967ae554de974831019c32ee. 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/TCAHC2317120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf2db4d42388ee22f35460de82987d7178679c280e288c9e6120047e19c4843. 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/TCAHC2317124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bc0510815a1f447556ead14a0de025f1b51bae1f1af604622c4401d398a43b. 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/TCAHC2317208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a98b2e341428a5e0dbde1fa228cfc941097849f2f1c4f40222537c6bf74e1e. 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/TCAHC2317215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c50a89bc6a9855befa61250c36dc0730a9ab1209433ed6ffc64209e6b67e31. 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/TCAEG1931727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1db95e00d0bf4e37c0177c36b0d914ac536ebc78f79a06c86db9bd1f3b14e19. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAEG1931729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80017dcb0905c22bcc407a3124792d1111df9b0450eb69167c535b5dedac301. 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/TCAEG1931739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4957b671cd396c98e91f60a60bfa38b52a02a86668f345ec891b82aef398d6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAEG1931741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344d3813b26c658b217265e1a531405ec477d39217dd4a871dcab82dcf6d71e7. 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/TCAEG1931744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b45132c72daefef3691840851e74bb8eb5538e0cac16388c1f8afd348364371. 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/TCAEG1933021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9315e96aee2a5ec91412544c462da8530400be7c5ee4bf251d3deb5ff85ce9. 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/TCAEG1933022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec41c375909bc50e6727fdba623a9aad225dc97c04aefc5fc6c5e5ea6248021f. 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/TCAEG1933024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fce33f4336297197511a9f7e5a439b72e449a30c70040b1ce83927c9e5408d8. 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/TCAEG1933025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f28c5c1522f579c0d1ee7165de3522783b32d4e7e6acca045a87e52e3216b6. 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/TCAEG1933026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40738174faef5bbd7ba81dbbadf18b0ff2192384bdc02ad3babae7785a08652. 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/TCAEG1933027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939468e2e6ec0b2da50a6a68f5659858be2da67824a846b9f43cbb32ab4d624f. 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/TCAEG1933029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d1829815aadac4ef0a7395ef9c5e8676d4b5d4e4b4508c904f022f1e51bf7e. 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/TCAEG1933030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefe9cb24dae1f3545705851ec8dc1eb1a8e651db2660c937af9bcae6b9275bb. 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/TCAEG1933031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c82d3dea1976a89b44501fadaad531024a4ee4e38237fb02a498f164415576. 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/TCAEG1933033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d53fb3aee3d29bcb70a9501c913eb2b2c2cf9e70dba6d935247736878bdf5f4. 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/TCAEG1933034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9de43b0bbb634c23fff0e71081767a518e797cc50a448bccd5522ad79b77878. 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/TCAEG1933036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379aa31bfcd73f44084ab049858287c7c13643a6fa13fa241b282b5c9471f593. 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/TCAEG1933037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f19d2d7d57d532a6aad8ad3abfc2d4b565929f279bc46860f61dd4023441c8. 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/TCAEG1933038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32faaabeda9355f5471295cb7bdfbfbc17129650de78fe6e79c6021653ad6fa4. 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/TCAEG1933039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5994434bb1b0b8e1f1331b1b0f617604e9bfe2be805934c19a6813cddc5a803. 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/TCAEG1933040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd3c344b5fe0cb1b4478f49fd4db9549b634bd6e85226c3bf10c484bf85e520. 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/TCAEG1933041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaff0c82faaf8c1c0f8839e2d851ac3fad73cab2b48bb4d9ea1484716d6fd40f. 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/TCAEG1933042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c246bf187cbb6df7938356feb33d67694a29191d7ce382d5253aa01cfe47f6. 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/TCAEG1933043.