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 0x5db9e7e753fceb31c487cfff27ac06bf39aabc20bf84442dfb4646e237e20a35. 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/5833b4a2-5c46-41cf-8890-df1e6177397f.json and https://artists.proofprofile.net/proofs/artist/5833b4a2-5c46-41cf-8890-df1e6177397f.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 0xa2e579fb82f0b0150a701fba7e219a30393af402060078e7e3ae9b08a22765e2. 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/QZTAX2576788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7766fe01278868a1c7616e3738bbdef00e6a0146ef7e3eb77d0002a80e1c958. 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/QZTAX2576794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b79ab56c1c4bf81607d09f1457630c6d41df80bbdc5ef3461b08ed1099c1a9. 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/QZTAX2576798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5453f9d5d7687f1006e375d7c80fc4f9214ef3bbd0d1c9268b586cacc986c2. 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/QZTB62506846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385674573a6e03d54a9d63b90a4f74d16db29f04f3e255fbfa266d9200b87c70. 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/QZTB62506847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9a184d9aab1506a7bf73887e1c42011da7857f67eaba9a39409fe5199c82bc. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:52:04Z), 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/QZTB62506856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06069159f2e35de54a7801183eb8fe7e7085ebedd92bce49794cdde6b9ff92d9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7U2563537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4129007f9efce1d46bb89048e8b9be223833c7f5a306c216a71c78e08c214966. 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/QZZ7W2516803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6abc88f5aa46650f18384571a26c10d92f7517ee03465070a82a32b3d5633d2. 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/QZZ7W2516804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560c1ea4dc245ce03a570214063c65f610d482431614a8872c0ec804d017d83c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:44:14Z), 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/QZZ7W2516806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224c08a814799530c432c2daf4158ba555eb31741c886c6ac01753b1ea07b825. 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/QZZ7W2516808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb9c082429bb167580e5b1c20557ad41eb41f589673cce5313651c19cf5c317. 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/QT3F42567439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e77dd7cb308a90df0b105f53ce8eef4979308249b5406aa61cb588543d981f9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QT3FA2553310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa155c3b960260c94f6ea3288357d7fb1c1f236efcf9ed5ff0254780e74ef5983. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QT3FA2550892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73059e6ddd2e6363a130cb0fc7baea184174ef98092afe777f6db8f554203af0. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QT3FA2553307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1183489c9800e071ecde650e1bf9d6f4f1a0c0d846bd1456c4072d3b7a7696f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3FB2551753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784bb29f0fc873699f462889967ebd2dd1c7c3e172b3a06edda81b2a792443ab. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT3FB2551754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5042864f6f5557a53c5b3cdd105c4cf6ce8154b52662e5e038528040a3b4f361. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT3FB2551755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa096bddd2cced261871a3a4e615d00eec3e27951ca8a747e468b46b55e7c9491. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QT3FB2551756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e77dd7cb308a90df0b105f53ce8eef4979308249b5406aa61cb588543d981f9. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:56:49Z), 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/QT3FA2553310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061a72ef413dff210a1003dbb3c202d7548c6b9b7fc1c4e44d989b8fbcd135fb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3FA2553314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73059e6ddd2e6363a130cb0fc7baea184174ef98092afe777f6db8f554203af0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QT3FA2553307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa155c3b960260c94f6ea3288357d7fb1c1f236efcf9ed5ff0254780e74ef5983. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QT3FA2550892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077248d118abefd280d5fa8eee3b076200abf93568e47f1c4eb4d06200dac619. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QT3FG2566468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78326f6f590edb8fe693361b0d358340455381be2fc5b2b952e57f61a68f027e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:45:47Z), 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/QT3FG2566470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf181f17249f58bda94445e487969b3757829facfb9c98d2830d7aa8ab8bb4cb5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT3FG2566472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d72360d02f221b24d41e2715380e5762195669bfdca9d6622dc415c00827cb5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3FG2566473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a19c5936805cfea9a094a4615163eccb5b0f67a2dc01d3541ce7a088f541940. 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/QT3FG2566475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781b2b9d5231143234e7cdf781b4be8d36e4e268eebcbe7af21cef3e60cdfb93. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:15:53Z), 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/QT3FG2566477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25fa2da045f83e84a50d4b0d03371a6dd59c4b9d742a01cce63e45dcc833a18. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT3FG2566479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5931a035e8d3b6e34f1956cab5a47de8532f9f206f84682024d99ba153d0d133. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QT3FG2566481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1836a9b247b3624dcb676a9e0d4d15aca2fa7a9f8604b39f1d50c7c9150552. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT6EC2545908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2c7450c291b2d435dc8af5ca81d417b4b42cece0004e2d697e622972160653. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QT6EC2545909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7263f5db30b49b0599bec3fc8b9d979738296e5a81e9ef921fd6712966c3a268. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT6EC2545910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71585e727848cd88271b3eed2a35ab51d3325be063827159cd5da599713f44fd. 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/QT6EC2545911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463526eb0b7a1fb1524b141fbcb9ae537b3562ccdb248680a630fdaadebfaf8d. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:16:53Z), 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/QT6EC2545912.