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 0x709c129f964e63f715fd67209eba7e98687732f7c95862a73de484764c951b7f. 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/922c349d-dcc8-4fe9-afe8-d9f27ebb90d6.json and https://artists.proofprofile.net/proofs/artist/922c349d-dcc8-4fe9-afe8-d9f27ebb90d6.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 0xb3572ecc1603785471c778c2c013cc62729cb87d24cafa3f5ac2993738c9d7cf. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTAT2471263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e18ab3419eb8d9e84fefda5ea62c7d2bdaf675d30861753b9068ee38b8c518. 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/QZTAT2498384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826b5985aeccf2e065b18ae545404b02edfafc7bc38467d9b10b316f02afad3c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTAT2496651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbff07b2f2a92fa55ded6469d1b6dce4e99031ee0b0d3ccc81c2a6e269b7482b. 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/QZTAU2425872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b09de46f48b9cb11ed3b24261128831f800a49ed736146c7c29fafa404b58d3. 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/QZTAU2462752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969a3dc01668f6717e670eda35aed1346d686053750435ec8874d3e3ee8021de. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTAW2461729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadde07d0a0c7ad8d4b0d5281f55c22fc8ebe2d0a44aae7434a514986af5526dd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAX2435626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46a46a44d6d68b04b547143d5e1aec36b967de45d8272dfc8027d99fbee9399. 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/QZTAX2472741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bcbb0df546012ebc1feb1f8f7d87867e71dfab5acea0c45dd29d02c1a235ac. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:19:24Z), 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/QZTAX2495877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e2b112fffc1d88463bc1838f72266ce935da62a70e9dbda0926664d7bc6bd6. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZTB52445265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01baaa886e2b6f56ec836629170611226438334ec3150ca98d6141acbfde642. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:23Z), 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/QZTB52474348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa832d0a78fc4848cf4c098782305ab15e1dd3e0f60434d006c17707dd715b7e5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB62408542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf16309e556cc9ae335ebd70712770ffd9770969502198fa8885a194495ffd49. 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/QZTB62409394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72b3db900b4eb972497b7badf03fa7a4bdd3fd1836a3a3b142463349a5ae177. 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/QZTB92470894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf40430b4a1a81536ca4fc0ed0f895d2366ed7adc4c69be957737250f8c038d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZTBA2401998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f5ba3354f2facbfb9022707de2993dfde894bbf22ac53ee81dc5d387ba5920. 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/QZTBA2406788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd2d13cdf104c511fbfcf74cde4cc7f96408a743d8e7e0f5d92bd9b63b6ef2f. 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/QZTBA2406789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d08176f81b41470759861402322eadf22fff9e21c8bd661a57e0bcfbfafa09. 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/QZTBB2411420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9253522ba5e6863fae264cee3e2c1cd69e2c67b69252dcffc22fa72156d6f56. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZTBB2441648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e61284819a43940b04a24846d5f77101384ed307b1ca157b365cb7485e992c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:56Z), 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/QZTBC2428518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c758f2c9ce7f9b7bf6ab79478c3243219862ca6a2adad59f007d06f999692d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFF2463677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6828a4f52b57f9b511994dc8d915c326a1e122eb53d973f97ef61845075da811. 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/QZWFH2455946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44e9d45e21643ead661046b41d3b926e05a1bb6804f0a1c0bf68894ceaa10a2. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZWFH2453233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb13ad0f60309a6e6e1ba56018d2567ac19829c24fd73c1a1a7f80e4a6b902c1. 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/QZWFS2449625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e27752e58d09640cd3d2f59751daf61c5940ddf4c148bbe84874bd1a8a57574. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:21:58Z), 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/QZWFT2426784.