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 0xca234250db641b102d47a52b4c2d5445507ae84c8c0b19538225f7d4f7e6b8ff. 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/fdedabc0-3038-4482-9980-1365c75b208e.json and https://artists.proofprofile.net/proofs/artist/fdedabc0-3038-4482-9980-1365c75b208e.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 0x1391e7a8aeb9ba3a11c39285a56e581c7db6e6d648a5f49386ef8cf2fa9f5ec3. 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/GBVTB2146001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3558a764c840008246eec5b84af81e18ebf433a45c6d8589627bb5aa18b5b3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBVTB2146002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c666995ebe268a29eb9f0faf5e3de4fbf928ab2d115364d35e1e29091ab471. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBVTB2146003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fb2252bbad1ad60d8069056f7b6e295644c7d50f9bffe0d9d7997a5fc76e4b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:25:13Z), 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/GBVTB2146004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e08606fea3f7d1a7e1f8edb3bdfe0dcc705a0919345176f3f4972f593ff0c8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:37:23Z), 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/GBVTB2146005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832b88b39f89ea139ee7ef5db8e6d3f851454b00a936ff58f9085406c03ff160. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBVTB2146007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4df5d087d97e1e60c28933240bd7f997fc417bf33c5b4144716b70b9789716. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBVTB2360007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa893fc7ea9c17a2b014039ce087e843acbc86f0e6e0d0c893e66dd72200a866e. 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/GBVTB2360008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06379736761108a64755a659e9a20d176ae2a679bc7dd3d7d25b53f78ca43d37. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/GBVTB2412151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c951beec91e8352950140a42bdb563ef1e45593e7a02cecf9793ade8dfc62a. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/GBVTB2576001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d3541fa45de226ff207ad78c36e7778b91803706ec6e3f3c3e59c9abf3a51d. 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/GBVTB2576006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2119d869a0cc3c5a5f5a555e19718c4de8757e9a3ebfdd0b6d93b2d9f3544060. 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/GBVTB2576013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c951beec91e8352950140a42bdb563ef1e45593e7a02cecf9793ade8dfc62a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBVTB2576001.