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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b627ae5bdff971d755579c4685c5a0e0627f8e10a6aa4d46728407255a14ed0. 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/9f4c883c-93f5-4d7d-970c-352307f32095.json and https://artists.proofprofile.net/proofs/artist/9f4c883c-93f5-4d7d-970c-352307f32095.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13771f4c3617bd7126b178588d5f48d6422eb9a6d8df25b2269a6c2496a86486. 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/DEY472372614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d976e814825b34792a7654636b408fab2dd50fb8fcee636509bb7e57a1def9d. 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/FRP4A2412130.
Lunar Nights, Chapter. 1 (Compiled by Axell Astrid & Red Sun Rising)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d56cda6104b010949799ce57433219f02ef291718edbbea99e2fc246cf19b1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEH741817783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502e297a766b3ab91fe2efa50d6ced382b0c3a81a629252c4a710b959803bbcb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DKZVA2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f3ec16e387a2bb06ea2c9b4afd85d38114ea698bdf3d7c92578d36ddb79ee4. 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/GBKQU2368430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2e3d8ba3617161604bbf1471fb28741049d48c8ff0d2e9cb809a53bc8a6e5b. 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/HUA4X2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d571cd9cfdde8116dbc6869617648c59ce818e28febd9918bb51a9e6077a6c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USLZJ2111737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c1dc696e15a5e053fdc430b3b516563b91fe6b17fd047579c8a1113192388c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBLV62101393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c69a174155562234e98e5bdb541724d97a60a24cf3e8e55f1e23b7fb25d3d6. 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/CAGWA1800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb30726b305ebb4ffa97d0e1860de3bb801760653951469336bcf6654933a1c. 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/CAGWA1800233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd1af514349efcc80e3c847e25f232b42bea62d06d4b9f6a0c4814b40f56b85. 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/CAGWA1800234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34db6ee97cbe129b5a8ca2c67ef7b64fbf3b3a03c1db47ddcc1a8af7d82f627a. 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/CAGWA1800235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088faa04506c995a3cfa59ec0b513e1cf93faf7a20962cba564d9e1606c4a305. 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/CAGWA1800236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79178b894320a1017f047daa1dab63bc021dbd9a18de921ddfc250f3cc472f7a. 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/CAGWA1800237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0f5edbeae2e56e4158c9a1deefdb51b62e6ee45caedfc662cc25d9a3270918. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CAGWA1800238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c7a6179ed777a1c56b8351879bc9a1c439225dcf4479cc793a7a4bbb541384. 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/CAGWA1800239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0a2180c3f7d3bae1f411ed319063e0c6fd454b0e71a47174817fdb01bfeb5f. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/CAGWA1800240.