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 0x86558a708c582982b532c1c155fdeac34686d832df6c2b3a0a341ce0fb8934f3. 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/09d93de1-ede2-4dbb-bd1e-c27bf3ab4cd8.json and https://artists.proofprofile.net/proofs/artist/09d93de1-ede2-4dbb-bd1e-c27bf3ab4cd8.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 0x07b8635ffd258dcbf4ec39edfc0d35106de0f951d33dd68dab7dea62c2204c85. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:54:20Z), 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/AEA141206057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1dfd142e6e0ac9a2f065b3567cb2483d5f8bb86b7f5184afb07fc627f399d0. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:53:28Z), 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/AEA141206066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c2ca2f16bf323fd5ecfcfe550d691eb9ed5f659bcea6fa7c039dd5146e17d2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:01:17Z), 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/AEA141308246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4156f7a4e665d0156ec61f9a1643bad88c2d600abdc44949aedaa8e8e9e2cd. 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/AEA141308249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37572b7aeca7e4260be08b635f78260fd16aae8315ba047cbff418f7383a2b31. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/AEA141308256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94ec71b849127dfd45c5247c0f49e4206551496be6b980dbccb434d332186db. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AEA141554693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa823cd7a0d378920569a944244966e3b2be98672a4708ebfd6da6c555a5183. 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/AEA141554695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8253f05bf0718b906ccb9071286ccdbb50ea35b1963da6d5f04ff6e1e9f8f89a. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/AEA141554697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054913a6a3975a9dad169574fc5cf8286307d7e2d35ff88f468604b8db393318. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AEA141554700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdde95ded7f278e8a19004f02ca02caabc332b9374012314bc1bb9800f2d312. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/AEA141554701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488e658bb3c52ffdfe09ebd104ab857e74db714c035eab9ad3efaf2a55c1d3a9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM2PV1568126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6c136e2aa39b1ccee46c5ee7f1816558856df78daa3414a912692f5d2d43a1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM2PV1568127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857aa4ba78a2bbe362cd3977a05de559ec6f2201bdf97648508749c061a851b4. 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/AEA141554706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9765a61e60f3f03280b75cfcb22b063897060f8c278bde9d635f6af6b3b1901e. 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/AEA141655727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e0418c0cf26aade8c67a75ec8045314e2e98d55c8b74e0ac434323e0f4ffff. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:09Z), 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/AEA141655728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53035cd302e254db64e6fdd023d5573ff32c37bcb6005182d7e8a504967da1ce. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZWFG2302824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c77d40603e9122f00c2b38cb627a954cd41ec51da44791f6aecf431e5e36b9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:45Z), 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/QZWFG2302826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6925ec743483f322e07df52e9877537928f55c70cc87f4e41e5b1a7598e4c314. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/CAHQJ1883117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a5a4b635467b135b738f0d12baf39936fcb43181ed931cf2a48f8332def97a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CACWV1904670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e142ca1953dc2deee9f6e09609c07e01d0f3935268b3ffabe6d87a52f4998a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/AEA142055496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30230ebb981b021413abd36e4b8b04c2c64f416f9e7357f6abd1415af1cb68b1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/AEA142114921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e42f222b0e57a6143ae145b6313f74ac3f0057fdc4f07bd98f4dcc099516cea. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTAT2110475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba28e1724f686ecd5fa8b9fd26bba89d956481020a06581f8abe32c5187cf3f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:37Z), 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/QZHN82282471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8ea58e0020a595d6ad3892ebb40cddc4f1feb6e666c025049fdd67520ac732. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/AEA142304413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116f84ef4796423bb90000a925d505804a1b9eb700845a5f72e262ea5abb12b6. 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/AEA142304417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca4a76c399e4bb371cb825d3f7a028e359697b4ae7005e68af8331bb9fea584. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/AEA142304420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab3e157b5362a8844fdf9f1567b6d02719368f53df450229e35ac5c66e91a1c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/AEA142304424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ff20b0bfcb557a58dfcbc4553373478667b7912c02653a598375b5f8dc71f9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:17:56Z), 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/AEA142502144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986916743a1dfaead6e801a26a496f44a0a9dc98f7c9d10d4281dd2aac64028c. 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/AEA142502145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f247ed94fa07a8f58beda0f9cdcc11294191b0ffe7b0c7717942d757abe6d02. 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/FR96X1925203.