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 0x46b1019f31ee3ab3686f4ff2e97be44d126663f45836a9def705aaea8e0b633e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3f82137-aaa5-48b4-b8f3-aed6cb219c6c.json and https://artists.proofprofile.net/proofs/artist/b3f82137-aaa5-48b4-b8f3-aed6cb219c6c.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 0x2a03c3bb522892028c7f4b8fc189a5100ef211ca5db5bcd14d19af0381a544ba. 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/HKG732102427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35516519df874fff85ac2a01121869a24ce132302f0b2e0cde33d31795999418. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:04:00Z), 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/HKG732256126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3798ada4fd2cac9ebafaff251841994de471321486ff6ad8705b1e688f7a997e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/HKG731775338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38669e979088dd8b9e9db0092251a668d23cc4a0d81e319d0d39b979025f9bf6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/HKG732223281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5309334d9763cefbd80f953358d5f3399b921190e604dade21d8743251bf297. 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/HKG732226701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1697e598c7bdb68fb564d2b85ad3313e0a28cf5260aefdbc1c6a11e486a1f041. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/HKG732248122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701745c2bd254e01ce8f666dc02467399394dc96e44fb4ca0fc9be72c528dd09. 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/HKG732255269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc738fbef9148ff57b47b0c39d64c9e225aa17c31e980772e8caf25cc838df3. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:04:58Z), 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/HKG732289646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35a9df2d28e9b73c2799622e118e956ba3a7973de903e873fed9de61345296b. 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/HKG732289371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7763c131bfd18b88966db5cbb68246977dfb794dcba2d5e359769b23a1d18e66. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/HKG732305179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cc5407434e3dfb88df9cb4e68f32317b1ff968c6ab0f6512be55fb2b815469. 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/HKG732309754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8835a50059c043fede03420eda053b16b8fe553c3aca06c2f645d0bf232a0291. 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/HKG732321590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293f16b578de119c75b0f1d619136d70face080232e48200ae6f3a6cf2215d59. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/HKG732321529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfb619c25146687a5623b3d160218d34ddff651d01bb9ba40fdc12b448b3f3a. 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/HKC992324049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b474798c76e4e62424562eda100b7eb8d9fda6ed53879a5e79d1d8b58eb1446. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/HKC992324121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cebb09d5f2cc1bb7ffcfacc1b7e1b50a0d667c26d35dcd418c623387867e1ae. 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/HKC992324190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a484314a1abd1cb787034511c508adba2dfe8492875fc4c5e44a29b6f2ac264. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:32:35Z), 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/HKC992324334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb8a25e830c279b83597e1d89b72718c8465aadd229a67c05678aca245d4708. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/HKC992324356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae20cdd85d1b914faf8e251017b440f88d386cfb49a162813bbcdd0076a2dcd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/HKC992324309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55451052530b38bcbe02a260ec87352bacffad9caf141e36f9a1a55b605d16e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:07:20Z), 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/DGA082337181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b80c56e74338af2c30142ff8d53043421e0dbe44f13f92cf634bd49d9c4508a. 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/HKC992325010.