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 0xf3c991d3f94f5e506e2a576f8c3b4b3d2ef177e55bfd4bc6c321cd2eae2b0334. 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/c8741e9f-b93a-49be-aa23-c1e1788cb4d1.json and https://artists.proofprofile.net/proofs/artist/c8741e9f-b93a-49be-aa23-c1e1788cb4d1.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 0x4b8e37a47ccd9cc356a7d828ca8dff35fcfc9d0913e5dedabf224d55bc859c43. 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/QZFZ22466529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d0111bdaed2f5f1b374054adbb51fd94ddc3f4259f046070b783086486d2a0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFZ22466530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386ffdbca2b35069ff61f01dbbdad56aad4e0654559c96bca3984ba7512cf662. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZFZ22466531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc596b478f1ff09ffc2bcaff556c0a8c7b211257a34c566a4f743213134d6ccd2. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:21:04Z), 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/QZFZ22466532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8dc1b973ed3adddab1785a69f8d49918e7ba9d461b72c1c6160d09d110d7b6. 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/QZFZ22466533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551455bbcbc8cd49bcf325a46a914a33fea1ca5c2f708a3f5539582baba0d6b7. 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/QZFZ22466534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156aa2477a306e738b1c0b9ed842182a534ee42ebfc0fe206caddaf57a7f8480. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZFZ22466535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6c8f7ca8ad53849fcb8fba8d1b9e753d264f26153ac5fda6d7a4fa0f2bf389. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:10Z), 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/QZFZ22466536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c6a7823de686fe97ecf7713ac0d281977e6cca292d73a075a7b466a5d6cecf. 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/QZFZ22466537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976773f67be2418f61e964439b300a55d8997a749a8672f0dd2b9569f3899ebf. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:10:59Z), 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/QZFZ22466538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310e9787a9e8f8d2365eb4fe77a4608f0b4b75944d7231360466a8b48ac1b5d0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:28:06Z), 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/QZFZ22466539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b04a3645c3aa0a572671bfaa81c0ce60f112917021ec2fe39aa4b98d50dd3a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:44Z), 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/QZFZ22466540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572a933f7e88b5558e9c9ff75e231067512cb4450fa2624007634ffa740aea8c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:31:01Z), 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/QZFZ22466541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e4559ae825690b1f833499a09c4935f187efae31e19b8f7a0b74d7b0ad9f16. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ22466542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d045970d6eea0506d46b2187f352a1b5c16a5aa80ec2393f5a5b1d36d856f5. 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/QZFZ22466543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf254db33471d8ac12763d750e3188bbcf1be9e619e0ad3230aeccf75ee5df964. 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/QZFZ22466544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84625d2b0622a612cbe6b5cdb666a70b7e1634687a9f95bb2d7fba9839125e00. 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/QZFZ22466545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602a500dd95c2737fceffd73b92de4dceb2a51f695efaf07618a2fea813cfc11. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:01:35Z), 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/QZFZ22466546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c3a0af4e8073d930ecf66d8189fdf2ae5bcc1f2f560301019a0a9650e770e0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZFZ22466547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82efa0392846a73c0c06f8e84e7edc491f4cca635431756d81c18c7e7975edff. 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/QZFZ22466548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7b4c353ee23e9734ee49da6845c62b5689ef3e3409b82aca79d17bed5d30b3. 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/QZFZ22466549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5357dd6027e0f00858925e7b16bbef32eabff0749f30758fd61510d3ebd359. 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/QZFZ22466550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7494cc99eaf793dd51a8e63a3ec4bff8aaea520d89231a6be968da2e2c973232. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZFZ22466551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c4576e231875f40759a409d7953be06bf74199a8cf28ed76370a232fba2d79. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:00:36Z), 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/QZFZ22466552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343ba808f9b53d5c4145bd18a920300a47c5a50a9c013f48556b4077d76916ae. 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/QZFZ22466553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b8f860a38d5368d7d8a6c386ad86c3c7823e6a034dd85a618144eefaef7689. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ22466554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba873afc3055172c32b3c7c9f8db2986e99a953db2ca2762519e1996fbcc9bb. 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/QZFZ22466555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8bc8824c68a1773b4419f74420f3f9e8198331da2e9c1b167328cd853d9dd7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ22466556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08a25ebe32b3ff922e90a255d9503bb3335037d92a2b03f5fe52b2448c9e5da. 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/QZFZ22466557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478f25ba88d6bbd730477488afbf36ae7d3dd13893b03aef1be19f472c9cbfde. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZFZ22466558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d700182348d184f154bfcbcf8f0c4d72c58c80a3a79c3d2a2ed7356630f4b9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6P2406848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9d1797a26aa386984261b53a0be8f7cecd69388796f88d97ed763b65c0a0ce. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZFYZ2434246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e61b0a0741fd5be0c9d0db10eaa5cf5c58b892a7a1cab6a1d5387017eb0ca9e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:48:59Z), 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/USL4R2479974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3f476f32e260aae24b1138dfbd265285f189514da7709263156b134b69a62d. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USL4R2479975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7baa4949f82167d72c0be7ff62ce6a95fa7aab0e2e35d02eb129f95a8d003b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USL4R2479977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe130aaeb59fc1002d930be0217de412de5ed10b77ab9c531dd7cc68e88956294. 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/USL4R2479979.