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 0x4da1db9a724b91672ddd92370ef5625a59263d46e298e0bb59948a721e55e062. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72bd673a-bdce-4350-8e3a-26cab9c8d753.json and https://artists.proofprofile.net/proofs/artist/72bd673a-bdce-4350-8e3a-26cab9c8d753.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 0x30f8ebcb86cf2c8d66b1907e4375e55267ddb95fed715f003db894f873f65068. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/AUWNM1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2097324d87d6c43d552a80f1b2ca307974c6c162d0c0cdf33ff407bbb23aee6a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USA2P2129553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0163e49cf2aa4f9196e74e5e0293f623e29f0ed7b985ea0e73653f89a1b60a. 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/USA2P2205816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2097324d87d6c43d552a80f1b2ca307974c6c162d0c0cdf33ff407bbb23aee6a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USA2P2129553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4649b87ffae584125b0085a99b0d24656eafa656ace288588dfdd2c86806c2. 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/AUMEV2012289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daa4f46557fb07d2493db067f67e7174fe58d1195ed9790f0f236eff80c34ed. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMEV2131910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e190ada711bfa0c8e60a7f54e9663b64b6461e31b51ca31ec2138e3d301f05. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USA2P2205815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924a4b2369f75ff29c6f208b20991547f6b003469d177203f990d42c318070e1. 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/AUGBT2238047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f7c2ab84c6554ae852d618a5ce2b133bc612a7bfb877887526fb7a786475a8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUGBT2471356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35de4856dfe1dba725d736e17ec553fe75aee49c15330ca4bbc836f6a51f13e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUGBT2321160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beb35837bc2f9619a5d1ee0adbd7dce2046b8d4d0068a6ce714eb1fda21464e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/AUMEV2497224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0646d8e940c16bb83ddd8621778a0245ff4fb3384c090d3afc6fc2ab149918e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUMEV2323598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e958b74daa18926c7e6f1daf6510dbebc711c9b6885c23f3308276e163d070. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/AUGBT2429857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43e00915878b82090946f0306d56cfe39534c2735b31a7d198974df1ab7f8cc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:34:11Z), 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/AUGBT2471362.