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 0xd7186a606af16c10c211c8e7ac6da83fa0941167e57000bb98a16de4b287cbc0. 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/bb834e60-c981-46a0-8dc7-cde30b5ee5bb.json and https://artists.proofprofile.net/proofs/artist/bb834e60-c981-46a0-8dc7-cde30b5ee5bb.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 0x36d90f4865138dd120b26b04e0fd1035c427fcae6a04579811127f0ec339c890. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:11:31Z), 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/QM3DF2280075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bd6c0196f24f45833451efc00fea3ecdfba1740fe56b0d695b0c5ce4b7a45e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAHP2387862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fe22391cd9535b78eafe27b5b4d79d557ec118c2d2f0a7db1861101f758ffe. 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/US3DF2494888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd468eef3e063429d662361b1755a083574a0d7811ed7b636ea9d40dd1e8348. 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/TCAIP2413755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e42bfe0c8546da8d759a9628e13644317748da7eedb1837e203416dae719ad. 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/TCAJB2459253.
In the Hall of the Mountain King (Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53796e735869582c4428839eddbb89d69f3611deea41d6cd45603aeb67acff2d. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/FR10S2570707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf3581a3d14a0ecf6f1855163b93171355ece69af4ef1a740300d886d7b6937. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:07Z), 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/FR10S2570694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d94de54c88ddf7c37953d2d70f55e5a38cc483e0e4bc3c8a2522709dc6e3a6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJO2580330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69e9a5ef6fdc995f14f9febf887de2ea05900e76a3e321ef715c46f5faf750e. 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/TCAJQ2566602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d70de4e3ac398d6579f52cb26e7bddcce5c2f753429412d16a9b4de543ad42. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:35:26Z), 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/TCAJR2591973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f04834639b445b4d8f3c1940bcf6ca214494057ed27173c6fe283861bd2909. 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/FRX452595572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5414215b55d7f215fe76a61064fefef2fdcb20e6c091e4d7653e22c84f75a3. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/FRX872560314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f32f74f3f1864869bbf08f9ab4c8956654d1438ec9f39e937f6fbef73642f7. 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/DGA062511212.