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 0xb1909a7b399dd3f44b745861b07d31ee4433319b10bd4df18ed952c5f29ee64e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ef52762-6bdb-4d58-a35b-eac307509252.json and https://artists.proofprofile.net/proofs/artist/5ef52762-6bdb-4d58-a35b-eac307509252.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 0xd0d61954a28bb4549c675307f7658f5453cddc5f32190de0dfaaa0c5ac4ec47d. 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/QZHN72520831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18a89e9268c2267699f60860917208b3a123215a485d2f04c9ec61615cf359c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZK6L2540559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef8b96a23e8323de81681aa6a1ed3f044346a8fbd3d7aac3379831550880d31. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6F2582563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfe5e94207934be45cec4ece92d19e193a31812f730aa05396434871232678f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:57Z), 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/QZK6F2582564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191415b9ba0d1cf3334f51ac9c5e964ed4db01a419cc9d3aa587284d6d397b16. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6F2582565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccdac500c0e1ce49e96d5a3ee66360e0d34c773f5e735d79e166ac37f37403c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6F2582566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2088b2d2b29afc9feb6d19aaebd7fcb42e1450feff6a20b1bb0b4e57d3cfd944. 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/QZNWX2569624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bceb223f67164729eb7d8ab2ee2529ebc50921affd9c55366be5d4285cb4e0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:17Z), 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/QZTB32534565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dce5563387ceaf55ffdfaa30fea49fdf2357d809bd7468e9794597994df16d. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:09:26Z), 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/QZNMX2537923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979bf4d92ac404a90d9c922dc8fb717af98bacfb26d76f250d50b24638e6fa29. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTB42504072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bceb223f67164729eb7d8ab2ee2529ebc50921affd9c55366be5d4285cb4e0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTB32534565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c0dcde7f024c1e46726cc8557c8cbbfb37428909e3d3fa1be0b3f16cec80c0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB42504073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823da563c8e246f1c53820c7fde507188253cce26bfc38b349a11894581ddbc8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB42504074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877c7cb7d0e40db9babfdf5c0b80da9bbacfbecdd401837f21ff5aca919a587f. 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/QZTB42504075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2088b2d2b29afc9feb6d19aaebd7fcb42e1450feff6a20b1bb0b4e57d3cfd944. 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/QZNWX2569624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8485999462caa095198ca0e04f1963fa3b72a10f6f9a488e6655ca6ab2448a7a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB42504078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fedb873c5d260c56d44148aae0e02b64c9cacad0faf9b9417a321c1cd97c62e. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWFH2566473.