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 0x94b95d1d1d8139c0a1953b19602b3ee29bdf01b563473c8c694f3a9654409380. 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/77611c2c-2c00-41e5-b35d-f056285e19e5.json and https://artists.proofprofile.net/proofs/artist/77611c2c-2c00-41e5-b35d-f056285e19e5.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 0x800060b4d34f52eacc084cbc7a79e01d4efc1329357556ad1797813bc4ad5a8b. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/HKG732254126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb643ff8cc89d532fc83182d5a202b6c07fc8e0754b38e58cf24b18e098449c5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TWDL72200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d57b1fbf7a825f1ea732385b04ce809d1576d9e6ccb01dca6b88142d2d61cb. 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/TWDL72200368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fbaa268e8165ad4efb7cdd39938b7ef75565b3e59f53ea845126221f218dd9. 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/HKG731767291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe38a24552263dcf8b7548714b833fed3c199a8296c2ee7d79746ce0f39ffbf9. 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/HKG732220789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36914898acba0a1479428151b5033af5fa7ec78a5d2de8ffde487f85aeaeff8. 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/HKG732289530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab3f0bcbd72bf9a6342f12e7f6e8cc542319ef53361cdffc3d0e8c2a28d6d3c. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/HKC992324395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f63a49d6a0105d83ad0785da90fe2aeb18da134d365e513a5b007ac5ddafaf6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HKC992325244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ef62a0a8a25012fa058571e2688823fa309f74ae2ea429f245fd84d0b9620c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:16:48Z), 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/HKC992425050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf940146d9d7bb0ac7dfef6e7308de4295a42cf91fa21b4447bb1439b7550a583. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HKC992724801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8441abd281fae5c8cdddbcc5698810b702818120fb9df42d11a30e18787e7bf9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:01Z), 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/HKC992724797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a4dcb3e04af192ca35552f8222f97dc864fd3181234fbd5fb7794cad77885e. 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/HKC992724796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dc48086c822b5277914a97259296949911469a682b31c87618bed4ff2664eb. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:02:25Z), 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/HKC992724795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1150f6ab8c950f17a10c4447d3c9b013dc2fc048d54bf9e9f1221a6105b4e1bf. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/HKC992724790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5425d11640e90ae496a5951fe36dcf3a3e6879ffe72e105d0a18d3ba3a2e108. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/HKC992724787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8333209a69ab1d6e115751fe38c9e1bb77ec70df6ce0cb2a11e1cd3239794fc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/HKG732513598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d50733b97a6e5dd7f204fa87e215da556905f93f3bf488b41bb3aab528c80ff. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:17:01Z), 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/HKD012477691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297520611acb81b817517598012d80885fbab8676b5af47567b73c098c5da147. 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/HKG732542240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfe841d7df9e6a1d5f9b0ccb376205737ce73ab14abd2faf8896d7935c0a7b5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/HKC993125169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71eddb92d169ea42ff4c107f8e7ff805d0c02e2b916208f0e527724249b481e7. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/HKC993224808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ed1e84f0b78eeed9afe4665807fec83ed7280a59ecbbe4bf81537033baf1dc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG731775313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa799f0e410fea3a1a9a1aeff53dcb6d2e65e00460d187fa3f45b6580fed48d1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWDL72200398.