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 0xc5df539567221c7c8ba4f3b523aba8cff30f00781d8094cca0bdd1fb7a643fd8. 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/b2743d6e-3a3c-4dcb-94f0-c37b1b8581ac.json and https://artists.proofprofile.net/proofs/artist/b2743d6e-3a3c-4dcb-94f0-c37b1b8581ac.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 0xbc135aa9246c6518908815cd2672f65049abf9c68926a124c68bf00d4f200c5d. 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/TCACP1699427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5549157a329ce459fe84e94751334e48663347f76d5d02b69df503f3bf7b2b. 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/TCACX1792491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9d5413e24a16cc0f4d01dbad9660510fdfd3dd2e37900b4f1fc7eb41f91233. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:07:20Z), 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/TCAFC2007687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd177f28ab4468de6391ebe9fd0152851bbb9678999f0374213e33986fd003765. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:59Z), 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/TCADN1871971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f376686e97dd8698d24dc34cf1bfce664b91a595be78c523280fad4b2e2435. 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/TCADN1871972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2becdc44b9d278c86e52d05ac3671e973caaff9a56719e43974b7c9fc162e5f6. 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/TCADN1871973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c1e50a999179780acd3b0c2245da1b64bceaa1a5b7b743bd53b3f98ede9717. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCADN1871974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3586325831ad0f3fd02acea4ad5a89058f6403ad8d205a0836471069129e71f. 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/TCADN1871976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211e021506fee29af9c98b910cbe312a7787fc800217f77deff69a2082890891. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCADN1871977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2d655632845e022b365bcae4fed7af3c0847c216e40556120a6fec33c56577. 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/TCAEC1937105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e250c41d59c0347ff308d724ae9b5b50c94c075ac17d309566f26f1afbfcd4. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:49:36Z), 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/TCAER2094363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528d0cee1af8777b1c64959b46d2572bcfcd9d88b81ce3c5f083f124f26b5678. 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/TCAER2094366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2280438c1d687179291902ed64e495d4c702cfb7896e75c1d4706c347f9aed3a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAER2094371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe797d94f76cd9a9ed59f84b5f8b15be83985db1abac9807ce31b057417382be7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA052204655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386bc530b4de60b887a4af0987a2949f46e69548685d774615ee506a62a97a87. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:26:27Z), 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/DGA052252956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e5c075eb0bfcbe0c456165bd2f64a371a4e9fec714663922e762069acea54e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DGA052252958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71787faf7ba9628d4a04c902ddcd4a2cef40d5a9459a098e6c81af646a0bb2e. 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/DGA072245516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dc335ae51241f663ddfad7993bd36249366ee01f4372f982cd7d8e681aa720. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:33:02Z), 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/FR96X2337682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefda3c78629f886253f738b3530e4aa8a627b90a3c96ae84890574c7e92a5ce8. 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/FRX202355118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66421d50e3550b4e744c76f1be769115a692a663542189d64474c42d0c1db696. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/DGA092319395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c4deacd2087ebf4aff6e7d9994cf256ff6791f5a72c51b69f88a7e65252b70. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/FR2X42447759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0152f58ffb01409c7f8d611d22a45b9084e3e67dfe025ab7326edf4374da309e. 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/FR96X2440675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789da67e744fd6de6919433ed25a34c7f92aa9b3659576cb98243d462c277622. 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/FR96X2440676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaef20077963c7b7eb4f39d7d97a2d729054d5de778ce40e77607a5427eda4a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DGA0S2489985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde64c276a3c8ef7ae4c39278d95ef8f5e6d00ae558e0eebf02811b8e5a597dd9. 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/FRX282536197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1475004d7ac086dc110ef5054665c24e3e469b6085b5399ebecc45fc7d5a8e4b. 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/FRX282536199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b8b51771c1be72f72d5d1a84b96c6c518f59e097f14969c1c8e8bc42565a12. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:29:01Z), 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/FRX282536201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877f01df4000e8f70aafbfc93c298fe73dcec51d5eb2f66331d0813eb4a72cdb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRX762528688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8498a876bcaf306682ff73e16e9b01cf607b613e277fdfe6c4a743e9f8eab2. 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/UAKK11800025.