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 0x8132f10c24417982a45733374d1f3223828fbffa619130713ac601e0a43f8b0f. 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/584bac52-f3d6-4ee1-9f51-bc3f081ffe79.json and https://artists.proofprofile.net/proofs/artist/584bac52-f3d6-4ee1-9f51-bc3f081ffe79.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 0xcbd2fe1a98107a1fa6c1ec31ad18d2021c88432977ec7c220937879f4901fff7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/IND301900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedadea7200885b2188ee84486211e525750aece3dd79f26a039e96977d0c25f1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/IND301900081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1384a21e5522fa870d1339b2389a7c257746848868eae8364cee8af6a9e7a6. 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/QMDA62155028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adccc30e15a00635c32a98cb940f895f12cf118fc78e98240a6fdc072b8b3b6. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:33:00Z), 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/QMDA62155058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f35efd11ec24dc29febefed5f57b5cf4c1847b2fcf5d72bdfb5c3c86e828a0b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:43:08Z), 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/INA1I2001155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe3b78595c4167dadb8a47badf0344aac3ee8c0c6a60f7e143c5b2c5a637150. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:01Z), 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/QZK6G2073460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae0bbf111a126c6ffba235783b03816dfa83ee349978fa2659eee6455d9bc81. 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/GBMA22047417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcff9f6807123a408eb1a56325cac39d8180a4fe122381d77ebd5fd6529d9f1d. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/IND292203553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f680edfcfced14b1c53e8834ca7fa01c467e0640c84db799ad32489b2dc65b2. 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/FRX282278274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3627e6f01be2f17e5ef8bc1d9dea9a4f64ad473bbf16ce49f1631b5c7d1c9b4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZTAU2165181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3642f5628861b1fbd555ebc25766becd9417fb6f227f34d5a55722468ae22bc7. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:12Z), 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/IND292203518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3642f5628861b1fbd555ebc25766becd9417fb6f227f34d5a55722468ae22bc7. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:22Z), 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/IND292203518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefee41275f8c22451f27ea36e95f36937cea60500d92e4a5eaec2f6e464c82d3. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/INGC12300353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c6fefa37a1f7e1ff43d7df23f7f037ab6aff0f486286e16de6b5faf78c39ed. 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/INGC12200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cdac27fccb088883ebdb250290216f79240d94db9311be3953a01b7d89e055. 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/ESA122484742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b76fdae8a17f1ff7e4526b3f26fecb5ae97ae0b0b40a8c97eea8f5059681423. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USA2P2449540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5a01289a90ee7ddd8e0b80dc46cce8434f471910f17bc4ecfe39a9e3fff3c8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/INN172410157.