1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x09f5429517b747178194c15ebee65ddf64b8e31d20bf15fddb7db2112aee12ea. 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/48e07a4e-f6fb-42e8-ab89-96c1454a17e0.json and https://artists.proofprofile.net/proofs/artist/48e07a4e-f6fb-42e8-ab89-96c1454a17e0.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 → block OTSBitcoinBlock must exist at that height 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 0xe959ef3abf3d043e305e32a1398ff4d98a2ddffe8c9274bfb02ce7203848b16f. 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/QZNMU2084610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4472b99cd44141c8e836d8eae54e2805fe9462973d92ab2e8c0c02c6ad8b734. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:45Z), 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/SE6SA2239993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995cc27f614eae32f9ab270a633f75ffa160768e7ea4c16c85bbf9a10f73f257. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:02Z), 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/SE6SA2239996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc185a2a144602f2291f56c79a486f9cb0be9bec63d78b5f5b18daad1490fd9c8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:44Z), 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/SE6SA2239994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f6da019c25b61086abc95a55f2abe633789b2b7c5dce6aa31ca737fe80367a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNMV2257018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b88bfaf75b579d1fca173698851ab5680bac47408ce78cf8b6a4a1143343d7. 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/QZNMV2265913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3acb03d667cbe06641bca082340e4f41bc37d57f9b9d0129f7fa20c217232e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNMW2291647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd15ef77e12505a2f72fa0b7b56aa643e612d39eb20f918918dc0907780a466. 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/QZJG52342730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1abc806850ab977bbd9cb3a4ee0b8385fa6ca63274ff7dd9beceed358fdc18. 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/QZL382332308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea6a4275b6e7a5acf17011cb2f5b40e65aa0da688bfc70b49d001a2e2fe6d24. 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/QZL382332309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe922c6909b9b1d9002be6d77aaf1115db618a72f6f54092d49dde75caf04dfa2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZL382332310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7cfbb72b93d24afed67f2c370ff0709bbc5021347da5fcc52bbb9bd9ffc908. 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/QZL382332311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1d1871441e23d1adffebd5ad2252f60153d76d7860d2b6d2d0bed1a3392d68. 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/QZL382332312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c05dc801ebbb01ee01c7224aa26295af4041f8b75a900b98f4de2a15d7bf1f2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZL382332314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b98aa0ec45e9e42ecf35e0a1e78c190bb677782e583f7a1b2e03d78eea7e63. 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/QZNMU2366099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbee177f787e7fbf7546ff947e6e9ff9f386e72f1820dd66510b6c621e821577. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZNMU2366100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70cc60add7cdcb4156a96ce8464616444805a67dcbb6ddb0f228b76ca16f133. 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/QZNMU2366101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd920f76f7b2ff9b62f44159e30add39c10721484f2e39ce81131cfa061745b24. 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/QZNMU2366103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cf7530129db07d4de2455915d7e412d599863a82f287dde9dce3e72b443411. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:43:50Z), 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/QZNMU2366106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87dc7d1a9934d21ff1dfabdc58b0babd03b72a01fe206ba6b288050cd5ca11b6. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNMU2366107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa914b1b063ecab69229b4867174f075fa6a8b66c7c0d3a0345f3106ee790538. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNMU2366108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad50c1078c918beea90c2c133cc3456b929d2f4979c0ac95a0b36617e495bbe2. 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/QZNMY2340449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e46dd18b552a9239bed93993d8840cb22b689233c9a79df18047997484a69d. 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/QZNN22331759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1e5676a9526f896b076f003224af888de8dcecf668d943425bd22f79865a2e. 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/QZNN22331760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7f6edf33c98ee08c680317f76de3de8e4ec355ac00759d235b892c5bc617e9. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZNN22331764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919b1189db791e1afc4e2dd1ae590e4ef4980ba989639fc473c4ed3846ed31e8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNN22331765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258f5ebc5ff983ab35cb870387c9e09d2492d7e6949a48b87daf61d6a272a008. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNMT2525962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bd1edcf8ffcb45ed54b82b189d09d067a61fb701515f5b4a0175fb9b17135a. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNMT2525964.