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 0x6ea0e60fa5e49a8571f434a1bf1a8a0c2025a8fcdc2381516d1e28218ef49cf0. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cccc038-25ad-483c-a566-ae58056562a8.json and https://artists.proofprofile.net/proofs/artist/3cccc038-25ad-483c-a566-ae58056562a8.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 0x9652abdac2985e490798967e40fa15755edd66ffc9789e71c7c73f08a919148b. 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/SE3QR2000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44450afa7af25fcd4534966313243322e3e63c5618ed6711c7734f7faef15c9. 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/SE3QR2000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4e7ad45f2372a8661439bd860272219dd2866e5960dda20b9a0f20bd270362. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/SE3QR2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5deede12ac753d35162baf393c57309bbd93286d90755b4e21449962e785f5da. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/SE3QR2000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab89db9f7a4d11c38f0ca1282f876754f9e61bfcfb1f41335e71e1783075db4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/SE3QR2000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236ebb127efdc21c2d03a4b1f25fa9105da1214787d7a50ef3800ff3f4e47c39. 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/SE3QR1700809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878ddf145369ccadae6c60e1f5ad58a419faac1ef5e5801918f34a351de0401c. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/SE3QR1700805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668e29e6fca5b31c61583f50af19e015834d892483e349bbca84b3800ef36ae8. 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/QMDA72167876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5587ca67b39d8c312857abc859e85cdf893e8a5799ad57db7ca6371008cdda3. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/QMDA72167877.
I Still Haven't Found What I’m Looking For
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416b6f1ffcd328f0b28e701b0fce8d87e1a999e9eda73e770657ef1f9df3297c. 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/QMBZ92199061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a0d6c9315adcbe7ca3eed7fdcc4b0c186bad1387316613bd9567d38ff921a0. 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/QMFMF2109210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9ed51b7d9855fbaa79426c46c840108b1ebfd5b03cc63521fc4cdaae329cbe. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QMFME2195583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0a4f1a1060ab7922154ae5186a67d2e3ac7548ad7e3d90ab9b4681411bfa7b. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QMFME2161550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74daeab79a2f830f206a37c9a0c24f0bb92f96ba2035699c6931f8ac20496799. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/QMBZ92147390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac8f9dd2d419189acbefc88fc095f25bee7edb822b4b87a87fb93cdfc192b57. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QMFMF2109205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78177bc5e058e2c900df7c283bf1bb3d6d38af7f0eccc860bee60265f6bd773. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QMFMF2109206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dfbf5e30d6d20ef4886270841a4b23461f7c8926210e5260fe2e53133a355d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMFMF2109207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460733fe0446159ee885e3cb7e3a9ce7542bf8ab386e63057a4c5c1262d75974. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QMFMF2109208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d10551c3bb1f280abf4cd27dbcec9f8cf35454a802ee6bcf450175cadc46df2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMFMF2109209.
I Still Haven't Found What I'm Looking For
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416b6f1ffcd328f0b28e701b0fce8d87e1a999e9eda73e770657ef1f9df3297c. 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/QMBZ92199061.