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 0x1aa0bf2304c5f0255d7fc5d22a1721a31984951c88f0e5cdc02ec94d81743ac6. 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/0cd8b016-0d41-454c-b5d0-b4b4f4dc0110.json and https://artists.proofprofile.net/proofs/artist/0cd8b016-0d41-454c-b5d0-b4b4f4dc0110.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 0x2c770ec43a549e7701bbd237b45104b6a4e61be8a94cdad065caef3815649e1a. 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/GXBAV2556070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5a20e4c44cbae4987f99566a370ce4616f75745c9da8542d11a330329a34ce. 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/GXBAV2524815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73f495ae4f667ef15bfeae314fbf32b72631d38da3fcfafd4f52121bd55060d. 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/GXBAV2526912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bddf19ccee1d2d22902271ab360fab5270fa354cf4421f45fc0d186d7479ef. 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/GXBAV2583081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee31ec9832783729f436a98e8e7fa67f76d55fc9eddfb0dd061d216339e1d10e. 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/GXBAV2505580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bba3e0b00c0edd08dbe60cf0ed9af59ee4dc9363f3ed8d760d52345f787e558. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GXBAV2559491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fbd24965d18b633110aae0e64c0fa31f6bedec9f07afacf228b1aa4faf4707. 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/GXBAV2502004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33840ee9a40f74ff6a29686f13b1a6c4afe2d460788f72f413aeb0026143e7c4. 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/GXBAV2543271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99555d5827237632c8014b2033231eb016b42383c397e57a15714571130d257. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GXBAV2599463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9815be373fac693000f1555c0b9876d85c91f981573f3d3510265fdd3eadcd17. 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/GXBAV2586503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf713f06eaac4910e03081187016911be9de76ffadda231f6b734c7d226e9aa3f. 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/GXBAV2512033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52868cfa8eb613abded430597f8f1e3eece7b58057192cb25a200e8d796940ab. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:41:01Z), 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/GXBAV2580448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdc476c2910befc16a69e6a668b70b1bec839db5d0d36c34f1716e5c8775a96. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GXBAV2553163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf255ba6cf21878a1313f367d454426a5d243a8f8d302d6a7d84771b170136ec8. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GXBAV2565314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95e282abd08db403de9e047f53d41371b4cba65b8b730a0a2790da71a4d50d5. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GXBAV2568230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36954ae286fc53f995ef21336f205861dfa534533860d9c2f116a77b1ea1072b. 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/GXBAV2521428.