1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x75781a67e2654bc3683b8f434c2ab01481642f9f8c2ceda3d306fb0a36b010df. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0dd3670-3307-47f7-ab37-c67d8fc68621.json and https://artists.proofprofile.net/proofs/artist/a0dd3670-3307-47f7-ab37-c67d8fc68621.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 → block OTSBitcoinBlock must exist at that height 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 0x330604d6d7593a9ab2e6f2fa15b581ec776d81d7695eaf81cd068f9e08290751. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPB641700081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a86ba306690663db346edf5510e131579f7da551012f544ef464f8fca15946f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPB641700082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d07e468abd9610e0f4035c667e7db17659e0d85fc26d5c08ef19b9ad1295ff1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB641700085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bfe1d071934ed12d928bf696ae70f7676975efa1f2301e1f8c4ec0f52ddbf3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPB641700086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dba0e08f9eb4bf1930e5870bc3b4055e1ae3da797d3376c9b5d37907adf4a0e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPB641700088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313d62616a7d390bb7753fa1792f4500b34c71f1819de146dc824018b061e45c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPB641700089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dad216493da04ba4d6bb771339a3177c45ef5f77a997cd9c3677e55c91a66c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPB641700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe091072da388ee79e75e8c28b2f8e32279165f356c62d21c0a2c9e5686268441. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPB641700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea1452e4c4581f7851602d53b5e8a40bdce18a3927ce892a5f30703ed10dadc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCABQ1317312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1442a965a0ce41b2e032080888c563eb57d4a5b52f8d0c2cb4f42e7603169275. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCABQ1317313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bc1f7406bedbb355cac693d20cc506f0fb3b7405b82f08f31649084441ac98. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCABQ1317318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7696cdd235bcfb1a78c0002cb81ab13922f16f6272a73330eadcd6e114bf1b08. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAGS2376735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbb7bad3b4d92507a97d6ee0d0ae58838c39b5eea5ed90d64cb6e6df20c2f45. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAGS2376741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c47f4597c5647314896287089a42c6640de7a2c7bcbf470285ec1c650d1e74. 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/DEX261982901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8db3216c1a150987e2e01797370982552167e8e548e1298af11ef1a263d2812. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEX261982903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49d38875a8bfce99223dcadb1c991dab35d8fc07d08ae0ca4b85f38c1187b7b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEX261982908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6fc321914c352a771b132ef77c0a86fa8dc4f7c26d64174e325890a38e051a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEX261982909.