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 0x03571f6e57744278289f2a491fa5cc7d863f3b2e9cd1f8eccfea75b38599a40e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62566e3a-7b5b-4d67-b2fb-81e6ada08299.json and https://artists.proofprofile.net/proofs/artist/62566e3a-7b5b-4d67-b2fb-81e6ada08299.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Super Meat Boy Forever (Original Soundtrack)
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 0xae91808740b797da1d69c847b4ce00f8996e984c04d7376aac61776495ad20f4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:08:56Z), 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/USY282005100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d123c5b83d1930dab4d8ac1bed81c203648e9404300ceac3a1cc3c6effe345b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:44:49Z), 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/USY282005102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8e19b28485ee33a319eeb5d8a4fdde286b2d6694e3acc1529348cccf0fb613. 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/USY282005103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5278d246638e9f4a20b737454804b561cb506d985f98ca0d6914c4846a9b9de. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USY282005107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b312d3b249493ebfd91ed6954094ef5fee754c787ec7e5484fdb0fb8c40d472. 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/USY282005116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee42855121cb530242590f3abab6e143a44adf3a5b153cd5e18e8a9c7f21c45b. 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/USY282005122.
The Binding of Isaac: Repentance (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10841cfb379e7fbd8f13ac29884ef5f4951797a6179e9fd7952a067bae656239. 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/USDY42127259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e02fa5bdacf17dac87a2a7a35ba32ade273230381fddaaf144749fc2ed8478. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:49:18Z), 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/USDY42127262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604699b42335d7e41695812ad0f8e0aea6a6f8962b5cc9421dafa41b90efd6ed. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:22:20Z), 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/USDY42127268.