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 0xd7952ae42efe09ebb2b5fafdafd0bf53394c8b701814d2c62b285790ff7699b2. 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/16362de8-8c2c-4420-baab-1109a450f1cf.json and https://artists.proofprofile.net/proofs/artist/16362de8-8c2c-4420-baab-1109a450f1cf.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 0x38ee6573d63db23c62414ecc5b703c1fa63b73874ecb0fb34739236b40859f71. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GXESV2495822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac902e1cc26039f33aa1b2851de41a5161e7db4f61dc1ff99ebfe7a157558ff. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXESV2482017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7d691cd72b4007b844f7560152aacf1c17bd2e1f4407710b0f8dd2dd630e1f. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GXESV2432187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec38177d8f3b98992d29b3db2df3726489338bc7c1f263e521c491da0a0d81c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXESV2460625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd28c8afa4eaa95daeed6965dcf1f7c7f719ce4ac5b0d2d5623204dac0f1314e. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:56:27Z), 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/GXESV2470529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4edb7cde2fcff1580fc943ed8476149e1286d0174b7d3cc6834ed14ba9ab6c8. 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/GXESV2469664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08f354e411c1e3279ae82035e1d123d79315d19fbb3769601cee636ccb5c729. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXESV2475863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05995e58825978ba6bf44b3e99f393b91a41d48ee2acf2a27d9b95fb9a421b36. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXESV2402417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6b54b38473393f950c1cd28bc793671fba69d617b64c4c3f936ba543348e2d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXESV2454500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef2d77d59e007b1e520c1376c656cf59fd4039543949258fb95499107f55b00. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:08:14Z), 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/GXESV2442992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a5364d019b917f3b3e23c0239f10e9653a56df6d7e5b365597eb87040d7c02. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXESV2450024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b61e2b05d07cdb3b77bdb820826d6fedbae7321965c6fa4cbbb5af1791d5051. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXESV2456352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c5bfb688b25e5823c6ac052c61c42e43e548ea50c14ee61e3a24aa27c348f3. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GXESV2452920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc40c9f925770e11ea98259fd88b3f777bd3f1538da437a6d1152426feefd87c. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:07:01Z), 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/GXESV2428044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe7052f004f1bc16f160de23972989767d6dca516a02fe6e925d4f811740f55. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GXESV2403585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b85ff5ae9203a3a37e1918575101a93d3d772c3dc82558ebdadb9f1fa4c25b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GXESV2401810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7893aa61a73391e9c979ade8ff65621dc25a8e6e383b780eac5fcdcf31b1a26. 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/QZHNC2584746.