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 0x6aef97dda6d99d334fbc4d8053d38e75df38a9484a8958b50bd13fce9cc1dfd2. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6b86ee3-4d12-4171-84ec-9035431ca797.json and https://artists.proofprofile.net/proofs/artist/a6b86ee3-4d12-4171-84ec-9035431ca797.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 0x401f40151269ab28740f708ed13fe20a1b22455860fe7cc683294867b5a86577. 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/USX9P2370049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08884c2127af11a63aa8cd838c2786665add20c705f0abbe91cf03358094c798. 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/IL5842239401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e201ada6c8c7e5668f0398d8456a0614c827e0e2e7fedc4164cfd5d022712d. 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/GBSMU3940561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd67a013c853d43ea29af7756b3f83f33f43c838fce0fb7052c061e68492fe1. 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/GBSMU3940563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202c8549c7ba4adfaefdef7f37198698aba17f2529a1e3358a45cfd9cfc5969c. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBSMU3940567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6c12c00f5268f0c973d5bb32d57f85b0abe6f37d8c6dec52664fb553cc87d5. 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/GBSMU3940568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53445a8dcc02f55d50c7f5d58b12e1b019679f0b2806be25d42530dd696cb098. 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/GBSMU3940570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cba7191e7e17c640e6fb56103c2d7661c7b2ccd2990bf0b0f96c830fd90d1ea. 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/IL6191801433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29815344aa2483d4093a1f68dc4fa727f185842e9bebab4c5607ea2415906719. 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/IL5842134928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3eab3ac36677494333e47d8af59e225f6bcb36f8f597c8c5436101001b9d9c. 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/IL5842134931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4e9c2c8b8834d13bc12cf9aedfe9a9307f2fe3a4272049b7a7f1493740ebeb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/IL5842134932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4ffe6ad2a5bbbc2619067146432f39f0f958ec766fb2296f96f15aa948e65f. 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/IL5842134933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6948f283324551d3e0eb3eabf4a63206645e80c4ca977ae7c749c0cf2b2264e. 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/IL5842340905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c911491d3515fe64d5d1442e6a2d44b0aa45e827b5a8de4f19d55a3e422d11. 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/IL5842340907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cf94803e9ffcbdd8ea8cfdd88e975fd9ef27e4cb5451b59779413def945fa2. 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/IL5842340345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ee39cd0c999cb342a2e85f7b1162319f396ba256c90edcdae89100932d7769. 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/IL5842340908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7effc8f99859d5ec01afd8398417c7450b07abea876d53dbbad4e8eaaf469c. 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/IL5842340910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8b38f77c0e3eee46fddd83ccc57fc6c9426c1b761968949029bce690bc60d1. 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/IL5842340911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e5c6dc89cbeeca6c40b2e5a11173e183ca6f07b13f911635ac72c711d44269. 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/IL5842340914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383782673b36db74508ec39c311af716008c6d0656de5cea2ee8b196fe607534. 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/IL5842238372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec13a74cae653962d0fc2966f84f5cfc536136a52626a794c3e236dcf66d23b. 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/IL5842028145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a64de37b1b3add8b69ef794fd1546a385e5a0d559b7c93dd6628bb6108430e3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/IL5842131671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fed02e0abf8df546443cea1d0fe274683685ac1aaac0584cd29def7b1cf4e3. 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/IL5842132316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e57748504251cf13b31120024fd611bfb13c239f4d3f68bf143321a8127d5df. 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/IL5842030023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975942bbdbc5df6890a7eba742e46a5629823163382d1a5b07ccc5641eb544d7. 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/IL5842132317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907b5ce149ec5f192948aaf6cbfd3dae0d9dfd6ad4f53ca022ba9f8da837e190. 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/IL5842030654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bca2b91f7c7010bef069d5a650da75edd112c427d19df7ffa00ac055c2a0fb. 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/IL5842132319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83af3b6bafbc72a74597b2829c4e486775ed785ff162591d2f4de24295da116f. 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/IL5842132320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907b5ce149ec5f192948aaf6cbfd3dae0d9dfd6ad4f53ca022ba9f8da837e190. 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/IL5842030654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe548a2b204549e15bf17faa499b538c707bbf2c37f22340b7d8fc0fbf47ff6e2. 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/QZPLR2426039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6102d83044d8cf1861630f79da630a33a28bc25ffe7c310b8b0518a99f65ef93. 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/IL6192001078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad92fc6ee6e6bd7c616fb88402cb048132eb418ba12225dbc183adeacc55d0a5. 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/QZHNA2120737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2552b8298ed95671d512452b7cdff260dde85b0bb721fae0f79bb55a9a55176. 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/IL6192500041.