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 0x0fa1528775b90683acb98278cc84bbde2622416cd3fee34add9006fa7e887777. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80b97c2f-fbcd-4a9a-9527-94a4bbcc4285.json and https://artists.proofprofile.net/proofs/artist/80b97c2f-fbcd-4a9a-9527-94a4bbcc4285.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 0x57eaf251fd7d780b76fa6322a39864aa5a565b5e3c3f1ad521aefa3b416b08f6. 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/QZK6J2297776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1880f1f1e0ebfc881f7962e8d505086e1a2c340e1ac0a47d39d06c07627b5e9e. 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/QZK6J2297777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b77d7c0531810868aa5e981764b06895bf377c1fb54232376b6e72c5f01ed3. 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/QZK6J2297778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8641338a11f7228a2f1133027e3ff3e6290b245c24a33ce41751bfd5b707533. 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/QZK6J2297779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4a2bc4457a7df5b6e1986176b2ded31169a48902d73ceeb6ea62cc1e9fe4a9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNMZ2222717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e4673c3f482568fcb54db4c6ed10a7d822207d8f0885f1bf437c5ea4a39ea4. 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/QZNMZ2222718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb36e82154cb4ee9674a85523c0773386cd310e49f0405c3b4435c0c024c4f2. 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/QZNMZ2253722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f38b468975d859fcb951aa39093adb0862c8b567cf99b6616e3e8489e96db2. 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/TCAEB1939775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00daaacc977062277bfbe2a762ef960783a45c220621b0371b6c54b9cb1583d5. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCAEB1939791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceac018e9eb11756007f186c96969fc4ead1aa6bdb86b5d06df33d34ed0fb162. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TCAEB1939825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9c59672943e59ff8cf93f4e0d65f7ceb792993457e7a2635f45d38410faf71. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TCAEB1939835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd84998fab5bb30a57196c36be6730900c37c862c7faf50790d2a3eaed8a33f2. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/TCAEB1939861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd236bde579c55493872640763355789ede253ccca1f1ceafb9f220b7dd4872. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCAEB1945980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52eabb8e8e9eb8af99ee58d27a8fcd46f7ed54d492bfa37c4b317c1ab5455867. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZNMU2073429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38bbc451fcfcd9c52ea9e92692aa08a1b6bf7e79221befa966f7b33c0985dc5. 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/QZNMU2073430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd93f38c666b7827a31704a25264321d3f00b0becb5d298932813a31f954e9e8. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZNN22391708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7ee76aafc4057d81dc4c8934f1da0ce2df20e4d2359ba4c1b9646e756771a4. 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/QZL382455218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7073f3fc785b5d6325d621a3e8eff2df39da8e3e8ccfcd0d8b1af80f8c564636. 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/QZL382455219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d7e4338e0f8ac63d9c5f77c7ec32d76c3648d5914aaac69674a5f059a08368. 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/QZL382455220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4e54c5864a6ec64e6637dd97128e186979aacc8945c50f627d070375a37c05. 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/QZNN22364152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccdc51f6ed06f72f9438fb9ace04d584dda44e2e5fe0268202b46810deb5558. 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/QZNN32309020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776e89f9feab0114002e0c2d62513b83ebe4feca83d31c81b5ff178162d63133. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZL382455221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeeecb4ba002612db978529a3f9504a75ce9341ab39af72684673756e1ea47f. 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/QZL382455222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648c9a9818c51466eec9b9a660fb6e35d482b8f4c6090c60b763ebba0f2a649a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZL382450427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0f38ff5b2e9dcb6eb2aed22d23b874448c1090c50c11b5338b7ed248480d90. 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/QZL382455224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254749180e8979f650de287e791bb19992106ba2155f021b0e9234818524cdce. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/TCAEB1912946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900dd10897ba77cce9b9817359861c502a3f4bdf1af40a6aaca9c7a82833df0e. 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/TCAEB1926210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa796ea21cb3565a96c2161101d4ab7b732362955d5f8d3779c2277046666e2. 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/TCAEB1926246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70600f69247443c68fb9dd358c9fccca53bc3cca5a72b04faade51f4898152f4. 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/TCAEB1926276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb7e8c0d6ddb7f561e04b77478c63611f9d597f79eef82136ec7c80534df919. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:59:07Z), 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/TCAEB1926301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda1d144c392a690648bac89eb1dce148714917d3d37dd70a93e0a52f2870b21. 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/QZNMV2183420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621d6825cc5b5202d68aff01c07050812335c14eeabc95d1e3d8cb080a4373f6. 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/QZNMV2183423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2a42bfbccb919cbadc762a45cfe3e4b613f0275bfc3a14cd55ce182cff1386. 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/QZNMV2183426.