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 0x7503fcc7031aa2c70a1a0103c3aba0e667b2c81d6dd1db53b9b2ee2693e7f026. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/014cd5c7-f243-49b1-8a8e-d63220321d1b.json and https://artists.proofprofile.net/proofs/artist/014cd5c7-f243-49b1-8a8e-d63220321d1b.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 0x300b28475eddde62184bd57383fecba53cd270ab15087c38fc6b0a598282ee25. 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/FIBAR2200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b693c27c2506097e739448697641658e0f741917c5ccbefe44fe86c2a185100. 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/FIBAR2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503dbb584d384c8771fd81dab3612528864fb8e69ce1871346f4d116df0c248c. 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/FIBAR2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e0f0227adba5a59bdcbda5a41b5ef8f0bf1783d639eb86653d38b17c28ea56. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIBAR2300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec7fb72131f8c0789d43e14493046008a66fbac3d3c18a51d7922e9a01a73cf. 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/FIBAR2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637f8b5f5a31dd1ca50ca0e6985190dc8c23fa8d4b7a0df215b584adc30003b0. 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/FIBAR2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300b28475eddde62184bd57383fecba53cd270ab15087c38fc6b0a598282ee25. 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/FIBAR2200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721a8d0f1496e9156e726a2b6c30e269ead573952c30b839cabaf674c37e8740. 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/FIBAR2300277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789e7e3507dac49b8328d2e0403dc8e631e43ec10ee97b173a7f05b86ed87834. 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/FIBAR2200423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52bd9ab1438e343de178fcd9272b985554b5852348ea7245401f843548aeba4. 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/FIBAR2400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cc3e2a1e1a7c50d696b5e0f63a6ccf935bd9afff8d574b84ab1ca346fbdb4c. 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/FIBAR2400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e0f0227adba5a59bdcbda5a41b5ef8f0bf1783d639eb86653d38b17c28ea56. 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/FIBAR2300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be3dd0cef185b63f54efb54fd58e8f612e1f24b4df4d326d593e166cc4bea59. 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/FIBAR2300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02de87e39f3219065cf3395cec1806e65d74d4b03495320c7223e937d6100c11. 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/FIBAR2200360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7f6793dcdf00853fef1e0543f1855a738052312eaf1d590d12adfcdc6187cd. 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/FIBAR2200275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233d038a02b08d7c3d508ca75938ab636bc9d659f75ac0875d5f99747fe95b20. 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/FIBAR2200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37718bdff4b07a10711d86c58bbe24932aced925244068f6e3575beeaaeca89d. 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/FIBAR2100352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc34f8fab02b6d6c245ae7a442a1adeee17e21289452071172ec7fbd744cc70. 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/FIBAR2100334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f09e0db29aa4a842b1c0e1ed2621a7e2971a366b9beb19851a00eda348a815b. 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/QZK6L2095845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1e5a22aded0ae0145fefcd6013bf3c2e2a7607fe8c762c3af353a132e4dcf2. 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/QZK6L2095846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb496b5eab046cc521531e0cf543f43e63068f6a8d54d34cb5d5e0731e2a9a780. 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/QZDA82069427.