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 0x8bd8a4930251adaf61a27b95ce11e41ea51d2616e9d2315d82d7a25eed7d91dc. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b93b26e2-bb10-46c7-bbc2-8d9effdfdcae.json and https://artists.proofprofile.net/proofs/artist/b93b26e2-bb10-46c7-bbc2-8d9effdfdcae.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 0xb545c2531400ad8f1bd0a5db681d84ff66b31abe0f777cab5c2fc33c32d64663. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/JPW462371178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3de6c5c60b6805d77ae782b72035e3b50a32649518006ea9575d6c811a7e13. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPW462371179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d650d3537fa354d3c59529d20130128451bf7107e35c623e3d5250a098058f1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPW462371180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31c8046d8637bd870fc3ae27a501f7b83b9c09fa94141aa76b21edfa7609732. 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/JPW462371181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a213cc1e32cb19e368e3faa90984a97bafd815788260eff240277418a84add0. 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/JPW462371182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fe5d743c80dbdf870aa30c9eb5af1895dd1b276830ef7646802a8c35786ac4. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:41:17Z), 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/JPW462371183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc824bc2433193db1100f970f18532818a9335498f90e1fea4d377016a1d0697f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:54:04Z), 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/JPW462371184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5a6e1ed7ba17ceeff48da01e3948e2bccc418c0df8aeabe8785215c2a07e45. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPW462371185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd988905e0a7b09d2fe5e19e21ae59a813ae33e14cec3130efb781a11719e7fdb. 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/JPW462371186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47e926727e551ecf4a7d6cee9763a28d58bd6c121abc32f64d10c035ccb1183. 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/JPW462371187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80aa2346302eb6034b8e91dfb3d1da9a47e252b6f5998347e9b8e13173ab3dc. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:48:06Z), 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/JPW462371188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb4fa38a7bb0f9368e98981b037319a79d52fa718a4d7436038cc743b99e3f7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:21:43Z), 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/JPW462371189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94be38d22a7887eb33fbefd23a0f6ceebd70c74a826e3de5db7c5d03e6e5f900. 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/JPW462371190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a60b510b014412c8ce6ad6f81900da7c08adc188ec8131a6d681c9366c80cf3. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/JPW462371191.