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 0x1ad455f9671c8adb81de39401d18614ac3218f8829bb940f89898e09f4d2b9e2. 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/43f6aa80-d917-456b-9cd2-f15bf1886f8c.json and https://artists.proofprofile.net/proofs/artist/43f6aa80-d917-456b-9cd2-f15bf1886f8c.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 0xc4c21f372f3ebb0b32b4a09f83f3bb361350976cc6df2063ae512e9552493a9a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GRSTY2201161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826641fb6415881ae5f5bfc469530accb80e9c3c1a51a820c631bdac20ee0391. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:11:02Z), 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/GRSTY2201163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65efde894655e55574ce54dae2f5826ead0c13067048d50403f8a1f4eaf8451. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:30:57Z), 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/GRSTY2201164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3160aa86bea8dcc1125e28669b713afe9131e3cda2a10691d681a7fc97c1600. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/GRSTY2201165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d11372dbb9702ecb48ee6936435415aeb567d3488b738a541a0891b353bb78. 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/GRSTY2201167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf213e934c340842387b05b3f8b7adcb5873d0fc8444825d4f55daddfbda11151. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GRSTY2201171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffa768bc0c33c30072d8072cae0d7bf1a227cc73d69f92ef1d7bfc0666f4752. 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/GRSTY2201173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76ffc80b9e0860889667374b3e275ce4ab8363200dcce1b0630610e2ed74974. 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/GRSTY2201174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bccbbadbc74626881e7296044dfd1e55f93c1f579bd332dc51b9c6b200fdd2. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/GRSTY2201150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f00bc1ab321fd45d086eee35e7290a7d7cbb6d0f872bf573e790ef7309bdef3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:12Z), 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/GRSTY2201567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aea859594f604c8fd6daf7e48f7f93e75aad39740233139c4ec0704873b7a7. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/GRSTY2201186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d417d33454752062fb2c612b0effba729d58a50c9a41579aa3da9bad3d57197. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GRSTY2201189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecec53fc49cde56fcd729d7339adcae9cfc4304cd0abb0338d40530a9f87de11. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GRSTY2201192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77742ae297087c3f4af51fb7b75cbeb59eb6779654743f9ef8c4bf5f3bf2c628. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GRSTY2201198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22afa30767d8e772b80574198bd3a9a6bbb3a7cbe1a6dc6fb22f74331c7446af. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GRSTY2201202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bbc266dfeb345914493c2aa237667de24644288e86b254b6bf11f39638d663. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GRSTY2201219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe58ceebd45da7f6b7c83104b5fb3cb25d1a14cecceebd2ac8d18b93c248d5d3. 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/GRSTY2201255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cf1458645c5571c6204bd9f5bb151b0e374be7a94ae56c9748ccdb6a0755d0. 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/GRSTY2201242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca0fbbc32c2a96daa009acfea85791da04ba475bd9824b0fea9096d490deba1. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GRSTY2201206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812f732d98b4c343708ddadb2c8e3d5f612b926880a1c58f6bc294ba1df662b2. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/GRSTY2201207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a44a3d1261dceccb3ed66427f6165436c574afcaabef309ad24880785b6224b. 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/GRSTY2201210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35477084fd401259c00131eb8639b6544cea6ecbd657bacea892987eac1e05c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GRSTY2201211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fc7ad736424a1abad9190a79d4df1a4023136814ea0927be8b3640d9bd6464. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GRSTY2201217.