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 0xdbec320bb132ed5485c4e3d07e0ff4442a097ebde287d8958191938556b83135. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37ad0c2e-4deb-4a25-8a4f-38b7ef69f2c5.json and https://artists.proofprofile.net/proofs/artist/37ad0c2e-4deb-4a25-8a4f-38b7ef69f2c5.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 0x70db9ac1e04d8a80e65f830953b0a1c5321c6d0d20687cb6b49692457f471c9d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/HKG732002122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1b7691272677b2cc38a42d3640e830be40f9da0af4fe8ad3f7f86241223692. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:24Z), 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/HKG732001874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfdca7bf36bd1de81f124347becd05728c82fe73c39ffd234104f9c1e1ad862. 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/HKG732002104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc447436fb1ef1de70316664a87558912ce0d98b21b504da51e6a98e572aacc. 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/HKG732318519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a520b1378ab5c7f7b413005bda45195948b3cf7e169dc06df031006b274fd7. 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/SE57V2313801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8addd19a2fd0f660394327938a8c9fc6274656b3f4e8a534f18829572b898177. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE57V2353601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb6f4dc76ceeac4154585d05f1609f97703fd1cb20c9b7adfdcfb038cc3f06e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/HKG731622541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339e5e115013c5697ac2a8bcd674f7fee009e07ef3ad8e71b560129ccc64dc7c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZZ972331944.
食语人间（《食物语》手游三周年主题纪念曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b6fd6d85c69bd07ec516759ee2ee807faee4c0a8f8fdb03322b6a353d1546c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/HKG731624955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb186f80129a1451da84f830c5cba2e8574e45dc89d3716a20ab65b51168229da. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SE57V2316401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab5ba0d03170630be22113ece6bbc84cfcfc446eeb6b48ddffff7b6b3f5c516. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/SE57V2332301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a520b1378ab5c7f7b413005bda45195948b3cf7e169dc06df031006b274fd7. 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/SE57V2313801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab5ba0d03170630be22113ece6bbc84cfcfc446eeb6b48ddffff7b6b3f5c516. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE57V2332301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b91152ad4b896ebeff6a8fc875d6aa7cb581de30b96d459030bbb74acc5b0d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/HKG731401677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd34262779bccf517fc2874cb37c36b8f7561ee6b22427ef690ef6b33ccca87c. 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/QZZ972310666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0323cfe96869988a8b3a260bcc05659e3a8231198d6e30381fd561a3746b367. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CNA132401433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06d595aa922252dc3a9343a41130389cb0ddae351e82675d89c6363eb594f87. 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/TWAE32402973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07684c6990380d3554440fe297acc88cb5493108442e91487658e538f226255. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG732303494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0001462ae0c88ea6e5079faed84ecba1e0f0854eb8839bb0257d002e00bc1a. 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/HKG732118255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bda0a3889bf6976ba323c4481ccba9160d0bafa325376380f1f8a534e99940. 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/HKG732156554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68838872d0a78eb26e6fb716c4139bf1dfce1b06ecb80bfc2dd60f4810ef0cdf. 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/HKG732118731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9604cb1fa872aefca391c9f6684b3ff073d4c7aacf020205419609c7afd1bddf. 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/QZZ972331524.