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 0x49d92b422bb178b03001c3f887786957b9e3fd47f87d2b058f6a59d94eda670a. 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/2c900e6e-020c-43f8-96cb-654d3a8b9c17.json and https://artists.proofprofile.net/proofs/artist/2c900e6e-020c-43f8-96cb-654d3a8b9c17.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 0xbfdd825fcfc9aca35975d25faef6c4f35cd40b7dc7ac933d6359ab160c1c4c6c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:13Z), 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/QM42K2180866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d08968ad229a9c78c8c8f9558a90a0987b12321f47d80d0b3de9f12f9eeb1e0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US83Z2313271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3784f5fb01b49e77aabebef97c2186dd3e1fbbaf7c38dfe7a65530bb64d8c40d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US83Z2313274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e393598c6ab7bf8e3ce7e41915d27d678761ffda9ebb3c288522f2b4a4a2d2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z2309814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69e0ea80a0ab21ead8cd1f06aa4330da8526484397c15e8529b6ad0522af778. 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/US83Z2321008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44f1575aff25e1f811eb4f8544b859d654bf3acc79c60f2c4df190b0f2dc986. 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/US83Z2336138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9532522b7a5682e8fd8546b7249cff7a41c8800cc0aa6c7d0ed0f15b255774. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US83Z2345962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4bb5a4f247bc6dd413d7974c424c376f1450d2bd3e39b4a1ffec74d03aafc4. 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/US83Z2346357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88b1ec24d814dba1c562983f210ea0af56c3cc66386f9c5e24d042297f916b7. 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/US83Z2350430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9702822f976b278f5f90427ba9504091c6c60521c52601e9ed766c33037e3346. 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/US83Z2351265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a449ab7d0e1db2ab6b67d33c56bf2d7597202004ca00e0a41017a3e25884180. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US83Z2355240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbb709b9a7cebc320e1abf73c93cec6359347fd69274dbc0e5565def4edecd3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2461185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d7afdb621398d8b2980acc9947fdfec0a88754814d7aeeaf4bd640aa3acef3. 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/US83Z2488657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe009fb8105e3a832a8193672fe7eb8118d275e36a23d60230b7dda620a79ff09. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US83Z2401472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595a85dd0c1fe721138893fba58524186521c39c43bb8ef62cd521ae1f994b4c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US83Z2429869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9441d359bf22c37e43da6800cfdf116743a04b697fbd2c801f772312adc661ec. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2429871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee889afbecd1106eba7bd7b44a58dc835457138325b2a3cab341bd0197093955. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/US83Z2429870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5c592ce56751c6cb8a9c1debf14e0c72dfa8c7d1a2f44a1ab13c318b8598b7. 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/US83Z2420537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16acef8212b766067f175813d9a25820ff1616ed7947b5511a269db936172884. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:54:52Z), 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/US83Z2531229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42edbda8cbd305f6e814076e7be7a01952a30064dc6624e665d4578e8794a4df. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/US83Z2547547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a406a2f855a32324963ad4c7011affa83af5fd875053655f709ca22574a5ab. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/US83Z2541819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fd31c6e59eb12f9a2655b0d97ce6fa85482382091c0bf03989ff33721c8f95. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/US83Z2549873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb278d9420ca9bd50a028572ed327f2ce006df56383ce195f7a3b5aca93235817. 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/US83Z2554127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69e0ea80a0ab21ead8cd1f06aa4330da8526484397c15e8529b6ad0522af778. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US83Z2321008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670dc1ccc9f155b68f02cfc20d3671ebd9597d27b96707e850edaed00b4c5409. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US83Z2471711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9532522b7a5682e8fd8546b7249cff7a41c8800cc0aa6c7d0ed0f15b255774. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US83Z2345962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f85031b5e55f7d5b7096ef4ff2cf6a5d2b375d580c604d503c63d1520bfd252. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2338726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5ccda28c55437500e64a4b596818c6f9bc4bc85f202164ac3ede6b117ce894. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US83Z2347163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44f1575aff25e1f811eb4f8544b859d654bf3acc79c60f2c4df190b0f2dc986. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US83Z2336138.