1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xbeae307c9cf7845375d2ca982cb3b58c4ef4da6afbdaa8ab009417b76f8f8f97. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/155d00b8-62c2-4455-8e3c-314a567848b6.json and https://artists.proofprofile.net/proofs/artist/155d00b8-62c2-4455-8e3c-314a567848b6.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 → block OTSBitcoinBlock must exist at that height 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 0x7f2b7eca87262789eda2adee138496a9437fce2d689e257c0986f8314772ce3c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZFZ52130956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987533a0485faa4b63916e728abbea722401d8c841c76c9759310a3aa82e04bc. 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/QZFZ52130960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d096d563aff68804362731eecdbae9fcd00b6393c2e05903e9b86e7c705aabd. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZFZ52130962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c352e80410d82f999e2fa27c981c44ae9cc89a29ada09d7b6fc6a0e573dc7fe. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFZ52130964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffb1ddaa141a9939c8c6c0869a7afcd5ef02a78ef282e7cdfcd45ae1dfb0f61. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZS6K0001234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180569d7292e5a5bddc0f2b060e49ceb2047d5431794dc1fcadfb2984bd10b38. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZS6K0001238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f273c4fee6052a13cd31fc00dd7691683f25c1283eb6464f19b503c3f11b628. 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/QZS6K0020221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f54cf16de8a8bab61241f105fb4d8d1a59f344e84111c2fcbb12a52c417593. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZS6K0020222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934cb9ad3ee2b145be26c3d2d6dae1b5263c2757737f6e46e42f89fa88dbe7e9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZS6K0020224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2dd080ceb9711451d84bdcf50d57cc0b213bdf95158be04289cb21f4cb4d2c. 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/QZS6K0020228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab4de7d12f0043c55526145e9d6435b59346ee0db64387bebe266b53d3db121. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:07:11Z), 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/QZS6K0020229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb8fecbb9022e5b2b50c1fd5bbd5e0be79c8f5977e485094560b6579fd32ac1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZS6K0020220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1586d8a87c2d59db390fb5819161b997a851de306ca0c7486c7cafee5ce34e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZS6K0202211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e05642f7d5142554003917c88b63f9e7031f37a5efddcc458720933d7e5b18b. 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/QZS6K0202212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f4d72d115d2d543bb283969b4d33f1c6dfc132430aec11ea92ac7bae485128. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:22:17Z), 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/QZS6K0202214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c47548053b007f7679bbc7a24974769b6814c48f1b1e512e114a80ad6bdd74a. 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/QZS6K0202215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea35e2bb592f016c3912ab6365c66467824fb4ebdeebc5901ab03e39e38d39a. 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/QZS6K0202216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc311a0dde04d2d23344531265dfbb0e45c47c2a263bc1b8ac965db3038f509. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:11Z), 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/QZS6K0202219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f580bf5bcdcd85e98eb1787e0b2bd80da6dcacb62a81767c16fe649baf8625. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZS6K0062022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000675f78b8f0601d565ca2475eab5612d77e2cfe69e5774510a247c3aa44db2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZS6K0012023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fde44fb75dc91ce8e5ad4ee3f46b2c1d318deb05c740f275583b3f03638266. 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/QZJG52480390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ad311059533323bcce6ab3ee575a93950287d360373a6f6cb4ecb17dbdf703. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZS6K1262024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558f6df88a5749c5404b128bbe86b09c1dff788810eba033444ba956355f9756. 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/QZS6K4132024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd884e6d7e13b90879cc46911cb6b43714e293e38e17eeca2754a5486278ab7b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZS6K4162024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d931b039868cef01031408e8a5db4bbb2247c0624e22e4c3a0d3832d71277a2. 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/QZS6K4172024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06aa29a214065e6bf335d9280a29ce423a1003e95709d400d827a3bcd58982f8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:45:54Z), 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/QZS6K4182024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e606443faf1408a13515c6d8fc7bd4e8fb58e6f1397deb3d908908f49d26a59. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:18Z), 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/QZS6K4192024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11205935fd412957e7140061e967c9f4344e96657323df944e087836dbafb4d. 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/QZS6K4202024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ee6be334461125ff393be854bd0421983fd259657ffa085c89ef3290244b32. 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/QZS6K2024088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3974c4d5721741dba5c5d6fed2b29082cdf5b26d4ba86941a2924a015f8e959. 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/QZS6K2024821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a08d7214f915d817c0e90bc770efdf66bac4d880fa3434f9819e0011bd9e5d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZS6K2024827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a0304323e003d4653b8809f270b741f86ca518ddfe65460600cf1fe8693274. 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/QZS6K2024117.