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 0x4422ead4f038e535801b358cf1de597bd58990d5387a7686a344151eaff78486. 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/c2705750-3a04-45e4-8750-efb2fc495073.json and https://artists.proofprofile.net/proofs/artist/c2705750-3a04-45e4-8750-efb2fc495073.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 0x966b9c415e0c66e498a279c84456048acadd7ce6e358a815b109d49852c32811. 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/GBLLT2437980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1c9813406f1bb7b37f50f5a4642f1c3594c895db21ffda2adb68f36f9a6084. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBLLT2437989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b16f6fae4ea9050f5bbd3a84c219a8aa64d450a1b5761de729445a0a8651255. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/GBLLT2437992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fce7d2c85b3add8a2fc7b36c5da00f3799826eb65807d31f57dec3c34a4658. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBLLT2438279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac4518fee299dee539a056785040c20494d534aefa0365283fc6e1b3e7ee389. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:30Z), 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/GBLLT2438280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0bed3e9e945fffb733baa70279031f15818b35d89f2d15c2ac5423a45d9ea6. 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/GBLLT2438288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5808e6bb4ee0ffae64fc0dcb0fba00a4180ed3b948977387cf8d2450ac7c4064. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:02:13Z), 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/GBLLT2438291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e77b0170bcf68120fa4fec9e685f553f147e5ccbca30a5b769d413aaf288c24. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBLLT2502779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de02107bd8f23c4c11b8e0d87e7fb2a813faeeaf971838316c21124ca3c3889. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBLLT2502780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be6af1a39997a4d190fddf58714dc40c6ed50c11962a6afd27d9bf5d52e0bf7. 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/GBLLT2502781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d1edef49d8a890a2a10e783943892a3cb252f46d01aa9d06b6b5787ff3602a. 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/GBLLT2502783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4619d728df62dd85d9540127d2990003898443452ef13666bcb924719ad42f92. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBLLT2502793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbb48b4f8142d84af2210cd1863f4172d618af8043b3dc514c51e6dc1f01f53. 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/GBLLT2503796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03efd6de190f999618edd9c386b78c8ac79a1ab7cbec349ee2c117c852689df3. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:42:42Z), 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/GBLLT2503797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7536b0d11a9e598d18a8217853323a3f803baddb1ce5f838945d7e8c50435906. 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/GBLLT2503799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850318ec405d58980b3636e10eb7bdf68aaf755f88157959f2120582c8fd1ac1. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBLLT2503801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872438aa1667f9f5f5bb54f75ee697b2d2e5290921d442fce1e0970c8f50f4d2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBLLT2503806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7fdd53384ccdaeae8cfd3e60b92167db05b28d01e9f1ad7608d530d4c1149b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:28Z), 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/GBLLT2503811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd75dcdcbaa9c946bcfb1d80919f0bb8bb2bcf213916585d38e6d66e4b4dfb9c. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:46:57Z), 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/GBLLT2522548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851170b757375ea3c2ae1c9a1c55e847bcb6d53c42799edbf5f177235df51c0f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:43:31Z), 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/GBLLT2522549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08abf9fb170ad825b6330a0a695fcefc046ca459ae5806b8c4567883cc08b42a. 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/GBLLT2522550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4908ed7a74aec7231fba9722540da83951741d67df5809718efd0edf24e601. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:41:33Z), 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/GBLLT2522551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad67d5909c61c2611fa90aee28d37f0bb942feef5c32df185cce4dc357d2716. 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/GBLLT2522554.