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 0x1dad1a9b02d21c2da8f5a56c0fcdf6da2bc8253931292b1726fa036d2875f180. 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/226044d3-bcd3-44ed-9f9a-ddc1f7923542.json and https://artists.proofprofile.net/proofs/artist/226044d3-bcd3-44ed-9f9a-ddc1f7923542.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 0x9032ccc99654f4056ac4a12680a2b1bffd6cedbd2773cd656c66fd7adc2d9e88. 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/BR9Z21900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6ac87afd86f6f27716833bf75c94eff413018d12671634ea2e4ef0015b5868. 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/BXOY52200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ecbcdb6f1e84cc4b5accbd87b8c17207c8e3a4334f9efa280b70a319a57c30. 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/BXOY52200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d94adc0dff31a01c8e61188132400276238a439546b96a16f0f46fbaa0a7fb. 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/BXOY52200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0a36d03552ecf0d3ab0316aa55a6bfbeea5ada79488f6138b347be17ea1ad1. 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/BXOY52200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ecbcdb6f1e84cc4b5accbd87b8c17207c8e3a4334f9efa280b70a319a57c30. 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/BXOY52200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5f8e8a62c62e64d73bd0f121b3f9e74071e850df27306237638b3b9b10d73c. 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/BXOY52200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f6cea79601eceab56759141a7aaa1739df0e4603f23ffaf2a918643da510f5. 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/DEXC82100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e35ae4bb15c89d68b6924f44de87df7ed35a6e7459610d8e386311bd8e22db. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BXOY52100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2644407cc64b4426b52da2e8dcdc88c93ef90aae69263848284f2e72f7ed6b0. 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/BXOY52100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b6667d75ad0a45a844a0f0b9e337004017df0c8c908c3551c940ef1f071c97. 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/BXOY52000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784c597fe8a555904b44c962cf19e39ff95e66f9006c77e90533c9260385b05a. 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/BXOY52000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68829e9d1961a0f18f7a70f9b8004af751914cd73db1d04d92524682f73a0513. 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/BXOY52000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119133c863f29a96917af5379ceda817cdc2e6a66f832910232ee8870d1fd98f. 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/BXOY52000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cf2e58d0411825cc8a2a3805d79ce1828e709fdf5c118699277ad002b6cb12. 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/BXOY51900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7662ccad47d8711e2a7217851898ba7028e6c224dba984d6d8d4d47f06ed63f0. 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/BXOY51900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e09e2c3dfc5775998741887a1fcc4746d81510da9501a4f186d2dbdeb35ac2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5751996644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71827b02dc10cfad83eb11ea604c3149f630e9e17dc2ca36a5746cbd8dc3de3e. 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/SE5BU1939144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d328e934394e330a9362877d2275cbd07aa96f1fda3e4f4b12b859afa0726e6. 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/SE5BU1913497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ad5358504f5baa86cdccf056d41effbe045bf85a212263a47079152beccf73. 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/SE6HN1909632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd91f05b4462e44b7de63e48a9e9142dc3ee602728a21ef1abe1dba15f1ba225. 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/SE6HN1909633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d8d81a6b1acade6f0ea3873874416e102fe7db744321d36f42db361d6dcb06. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6HN1909636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577cd1f6964defdb0c95975124f420c3a74866a95582679cb18cd99093328dea. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE6HN1909640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670d410d0d9f9b367fca3d2728bf3fe0e980fc3fd34293d392cfe18131eaec06. 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/SE6HN1909641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7db9c03235abf260a745bde669e96d84ab62b121efa5bad07b65b899484b63. 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/SE6HN1909642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baa88f98f0cc0c3ce86da694ad1f20eed2356c03e74865d3e305a63dc74a286. 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/SE6HN1909643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976d64476bf476c4179ed7800d590e3c64058079f5f924f640e85ad907298fc3. 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/SE6HN1909644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2878a1859edf43e2f3f6f748cbcd564051e04a10d9d90e8b0f5513b7adf4722. 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/SE6HN1909645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ccccda1fb571c6fe942ee0ea0a0dbd7f833d396aabd7d3c2494cee53063559. 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/SE6HN1909648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2502adf86864ec7557b86acf08d661d9bb4f8cd801ff183dd0201eb97b361c75. 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/BXPOB1900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1f579ebe28aa614cb7b51fa596e1139927df95d56d46db48699443a53adf2d. 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/BXPOB1900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8fb3379aa3e9e7c568e34927a552ef1df356280d1fc5ce3950526a38896d6e. 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/BXPOB1900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b930396e6236b689ac5cbfdb6744f42c960c3f7a96d5581f48076e98e6c88e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BXPOB1900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6bd25a42c6833fb7d2cf34f5dae20bd880af429b950e3b89233915db5890cc. 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/BXPOB1900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2d24781d4305af4993707518a16378036be857f1ce01eb43bf7056ecc1bd05. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BXPOB1900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0c5089285cd623ea6721697ebdddc4f3e6840f6af8ae88a5ce5b138c4df2d7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXPOB1900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c5132ed450a35bc82b241ea126cc3de9d2345e267f7a10f389ebbce527432a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BXPOB1900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29854301aad28caefedc11fc5ad39f27e95ff292094002cca76327a7114ad88. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXOY51900003.