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 0x2383a34a3ccc483b0a6f445f65a2fc96bd942ed8fed3f84da9381d9076e666bf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64488c12-658d-4fb0-9400-1753031d9149.json and https://artists.proofprofile.net/proofs/artist/64488c12-658d-4fb0-9400-1753031d9149.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 0xa6f4dd2446c1155893093ab2e6f051bd9f4ef0a366b1ac72991633d1ad434bb4. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/KRZ291914774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe600cbd2c0ef68aa9f242ae266f65c5a1d3b4484949677cd5ba7352a5411067a. 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/KRMIM1920637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28adb178eaed5f7be735acb13e1f60add0c1a00a076740478d22c89f06966857. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/KRMIM2000624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087a09547b111d7d88069fc5c7b112b7878696e1cd9312a7cfbd7b1ca6c5737f. 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/KRMIM2019234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cff59ca5e8f87f7b8dfaa39684f51178236998e08573e493d68a2f27e13fd08. 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/KRMIM2023392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087f5e7db466a3b69af69d2b6343e2dec0f903a11a4652d85cdf8a851acde152. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/KRMIM2031879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe361f12d0fa007217256baaac1fff641a1c1801ebf6c2220839ca7113bc3588b. 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/KRMIM2117985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8487eb99cf1fc46bfb73591771ad68feb846833b7befc22ff94c23ececabc9c7. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/KRMIM2218230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2617be21d47c46a78cea9bba7eef18e29f80b8dc60933be74833b1093551257d. 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/KRMIM2218232.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102206cd49de2558e0b5bf19894fd016994da331356ccf72fcf836b8517a67d5. 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/KRNAR2350945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7306ab6b4ade1b128c945a4667bfde0e0a4d55f349edc69ab7c6c328c0cbc4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/KRNAR2351334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eacefdb15031e7b845fb31c2c693ee3fc34471ecef52536d23ea2e004fb32cc. 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/KRMIM2431222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57994ba7269dad8c240addf3885389d230e35bb0ef3599dee0b1a0afa8c6ef50. 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/KRMIM2432364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b67979f61870f7cd05e29ea49de1ad7d4a61ab0d9317b59825d85844473f9ce. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/KRMIM2454791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afd7bb735bb3651bdc5b4bf3bceabdbd18d7b35a7074da37d4b883121c83d00. 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/KRB922421026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ed60160d3d877e6e2ddacf64838f76280b0c322a07ac35bf98b2b48c52c390. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:46:31Z), 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/KRMIM2473197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1c6b1c7d405bfc573feffabdd09ff3d3999dd63c29577a6a57025d2ecf2c11. 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/KRMIM2505380.