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 0xa9238f13cee27c534c63b707c2d0062b1d3bcebf2c19081903732c885763f445. 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/2741faf5-a50e-4c7d-bf8b-f280b1af9318.json and https://artists.proofprofile.net/proofs/artist/2741faf5-a50e-4c7d-bf8b-f280b1af9318.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 0xa1e05885de55d9de465e73baaf4b11f3cd8f6c8ef671f46e60e4a4e3f58d7750. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:43:14Z), 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/FR6V82475626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90387ff1f22edebd9dd70fd1e388a0059114d2f26a3d35e8e30762da546557e5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR6V82475627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d0c09b75be13ec9e3e07560db25694f7c974072d0570fbf4f10646a8a18d2d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:37Z), 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/FR6V82475629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1f0faf67394482f7c7e6bd2956de25e70ea05753dbb1b65acc9a32f22425c6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR6V82475630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57f360a446ba679db9955591dbc2aa8a030feacd82bc1ff264314776699ea42. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR6V82475631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ff2baf0c0f37d73ccd1960708a7c5419f1bdfb0e47c6e3ce73f4eff8766095. 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/FR6V82630925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcd75b29ac3fca975ffb8f6e201f8985162b7b6049c5221337deffcbe6fc768. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/FR6V82630926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9fec6b0903697b3808f83cb2290cd8cbe83b75f47e4e33bc98a7474d588bc2. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR6V82630927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91411b0b7c9a1e0edb2c958daa8cbf56f537e3a8b1bc334728c367415c4dc546. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR6V82630928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd4f8a3a27773078cf96fee65b730cc7612f7e51733b7dba1370586345b9eff. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FR6V82630929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa87966545bb1d84fc75533b0bae0ac4251f6cbc8778a648d1af7f12b94059f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:54:21Z), 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/FR6V82630930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4867306c097512197f07fba0732918fa8a81043ce180549a482154d926542e7b. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:30:15Z), 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/FR6V82630932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835c5bec4942c5d2ad9464a5955f78117003539576f7a3016ce88b8493f31d61. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:24Z), 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/FR6V82630934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2198a13dd922f563f846e1c8a6392eaa93c7d9ba4f8e53b3fc8674aaa55f6349. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM3DF2101569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bc5a6fb95787d9ace19512ec9322f5754a04e485023058718279498b96ee38. 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/QM3DF2101563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a809ebbebbefb9b05ab8cfbf9606f890fac1dff68061e9e2253f2229d11cd6f. 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/QM3DF2101567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8045890d89b12c5906ac694e152bba27ca9efa64d8275a487919f3c7ea821ceb. 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/GBSMU5804316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef858be78bb38b9580bf67e898273f0da2cf01cb79f0f62f2fcd48a65db434a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF2004357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3deaa383d8705ad71713a766abaa4e3f04516b9574b626e73e050a94d7245b. 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/USANG1928743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa067d9d155fbea8085c30a0ae307b5283da4d2b80532d236ad7114c120be5b96. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FRX872156096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6b4930e3d576cb6316d69bca0a0a2fccee95104827ee1dfd7bc6d9eb01e9c5. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR2X42250676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a9432585c2d400db6ec1d0f16a1ad4047040630eab4bf0f5a3596d03265bae. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR59R2288867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65a9ec635df69723de552df4b7043c39444294464def7e36542f505498524b8. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:31:40Z), 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/FRX872302436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cda0fe9237e84b90386b26d37f1ed5d77a61d9c15cc1e1698f68a351f5c7cba. 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/DGA052306889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e36b499f6d4e4fe1ab9ee2c72eaf775355144d560fa9be6cd0410a32b55ec1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA052306890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93883177fc1613036f8a27288f6ce59fffa7a083f4811a51ac7ee64f9779947. 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/DGA0Q2327476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064af38edb85a1ad034b75354f3f1f1cd09518fc2fb2e8825ece65be076c6bf0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX282428081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d320392124524c95f13ef4acdc6ae193329b99d5717da0aeb4ebe242e52e4b. 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/FRX872406183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4abd66bc40b4b5c9cd40ec1a7f0c5d2b377a3d14bc8e2e4500f1430f8b45f3. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/DGA072414624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ab9ac3c8f0bd2ba6b90f72d70df01489bb26a66a95ad0c797e3426f3d369c4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA0L2408018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d82b83ed2ca86f205e671a470529c62d84f1d3b10e4b9ee07b1f2b024293e2b. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:05:53Z), 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/DGA0H2463701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a98c18430b3e203363062c3b0b84698f2aa3349919526a36bb0512b048c4fe4. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FR96X2594140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676a8ac54d9f9e47d35c82a68c82ba340043a73f8e1f82f0a5885a5ce00833b9. 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/IDB832504647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1354d6f434474f167580192f3615e7e017d5e12fd2733729353c1691c3b068b3. 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/DGA062589513.