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 0x36d74b11774a0973caeb22881e22e364908433bbe59e0e2a3912d08fe6f2b9bb. 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/34360486-8f06-4d0e-adab-135658abfab1.json and https://artists.proofprofile.net/proofs/artist/34360486-8f06-4d0e-adab-135658abfab1.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 0x81ff1dc82e578f68f7a3882f52956ef24452b00698d5e7046f41486bbb60e748. 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/QZNWY2349035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272076f278882a88ad713b3d013321f9f5fde5300e3e1fdc6290e5e1f555d680. 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/QZWFM2344172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2d845ed910d837fd8552ce84a5b6825ddacc9002c10d66afc6e872e571ad15. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN52494619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502ca964de881a95614e1e5c083456a683030c09225d6540396b672904cdd8d4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN52494620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ae50f8cfe1c1a7a5d0e47f52fb9c56b0509208c5845c5da24b29ef0fadd459. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN52494621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fb5ac0d9f57b3bb8c0ca3788e39ab361a52716d3d7b8002f4d82c1d84114f8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN52494622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62d6da0e4ea5961936fe7919b9d20fda0a5f449497f0a3af7f3d81a8aa47372. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTBB2339301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd847492d9e6f72d6270da304105b82f63efd983a818a4bf82c0ff73512aa8afe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN52494623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7135522a79f1db383a6902a320f0105602f75eafc4ca0b0b75e726ee13f831fb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN52494624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade7402414481c1edbab37d52b38a27bc24795dac54e7f546da203534c31e427. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN52494625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532fd867d5ef1c49d4b8db4aaefe0a641d1e8be10c482d6f7ecd53b63bbed337. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN52494626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272076f278882a88ad713b3d013321f9f5fde5300e3e1fdc6290e5e1f555d680. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFM2344172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e03a17f9d5c4dfd0dfac7b716ef0154b6e7e3560fb005ae1cd4120ce435dd9c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN52494627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc965a1d851314b7ef89b62dfda4304293cdb8957c297204fba9fcc38b8e33f77. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN52494628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f6a63b98a5e3d2e24ccd9e76a9376de172735d2f5dfc44cff90f7e540dfdf5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN52494629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb95bd932b5c9fa9f6ef848621312298d971b5054bcf958fc23f6e3196f0632. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN52494630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecbc3a299153093814a13bfb14893d22b5881910d56a3c79ed2dbd449aa3733. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN52494631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035d52986cc6be4736aa0f3413df94c50527fe701a74bf73115cedae5fb6ab96. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN52494632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2f2529b95b5461bc693f72bf61987013d8a1cc91190a58e2541718bf66b340. 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/QZWFQ2414700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9cc2d8a7fa0915b7c046958367eab7619894ef4f334de3dac3289c52f93868. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTBD2402802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b81bff77ca6da07485df40f186cce652c70681b123f4172d229e3e54c57c305. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZES72412071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e81a82a8fcbc854700b6cfb4fb174e069050afd3323ebf362300842d329cbce. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAX2378072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0628b1cd4af9c1c93d7d5cce95d206a177a08b6ec96f7508254c1fa4779affef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKW3Z2402407.