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 0x3890acbee2592beb23e85384ec9f8744d293f72e8116a860c2260403ee73c13c. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d3869a5-bcda-4140-8369-2c2901c08913.json and https://artists.proofprofile.net/proofs/artist/1d3869a5-bcda-4140-8369-2c2901c08913.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 0x75d09e19ed5eed73dab432eb999dd4339fef8bebbb8e00b4b6446615710d9691. 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/VNA0F1725181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f08a35d4636d7c6b9963362ee682170d51bc3cf38caa54a105e8effeeb1558f. 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/VNA0F1725184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6945b53fdcd6694a26ece02f0d61fac700a3b21063af461280867b4733c23e. 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/VNA0F1725189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f6a6f0d15f3747c5b6bc8a8605ba102618242d55ff89e174aadc724c98d96e. 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/VNA0F1725195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567977b288c6840d88497999c7c510663142ed05eb8f2f7cbd4e2d05a7bb3275. 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/VNA0F1725125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adb48e782da0249ecf2953a2c4faa9fe580981ab28662b64f889f284559d3cb. 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/VNA0F1725127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9326cf0635edab3367efe358da8d065f0cf1c02a7744848153c312e8ca5e091. 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/VNA0F1725128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6331ee929cf41046417d1bdeead1d82d43466006552bd01f3e934368a2f33907. 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/VNA0F1725129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763d0ea2cf7155d9a1fe6fd6b1fdf7ff8a13e1c9f1ad6a879731fb6585f8ff62. 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/VNA0F1725130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b832dc9868d183c7c1f485b4243a8ee379dbfcbb1347ec34f41d6e7f158f4e5. 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/VNA0F1725131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6090d41f7926c7cf19a85860913af53fc7b2e2fa1df142997ec33ed10c260c9. 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/VNA0F1725132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b79c3cfd6705bb197f2c2011491d142cca60aa0ef2c781860751c7e9676f5b. 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/VNA0F1725133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b45933918310ab5ea14bd1f7eb363b8a3a54d0e8cf4b73b54d59c25e3d7beb3. 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/VNA0F1725134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad368503685cf52bd938ca6f207ccfac68bff3e9abaa9dc02ca88a01a924aa1. 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/VNA0F1725060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943d5dffe67712b24227b3b0f87a66f4a41dabd98a418a7a1338a83b0e5c3b83. 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/VNA0F1725062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424036bdceb7d12aec3a271c9bbea7415db43f10472b72c91e3354e1c1304021. 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/VNA0F1725064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276b468fd3698bdc94da14e69058e3fc3e5f0f9c015f7176b690ac5a600d3a1d. 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/VNA0F1725205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa554bbace76b92b71a6310cb55d925e7ab9a638861ddb2c792cba183d12fbfd. 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/VNA0F1725206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b36af8de4f8d940c8bd0244eced7fe55695c4fd5eff4a0465becfa62d20a894. 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/VNA0F1725207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b79c3df0f76375724a69ff89314db29558b1b2eff9a06efc3c7b97e748902ba. 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/VNA0F1725590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb243248b6282a1f19306fa4b60a3c68b42ce64368efcfeb80b06a454918d6d. 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/VNA0F1725552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044832a48d31ba06583052a45f36cdec4873791d3a7dfbd7112e9b4a98381bf1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/VNA0F1725559.