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 0xb9500cb0ddf883f4290ca75830a41498323bd3d34329537f8fb745aa2cc34d6b. 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/6d4078d7-8dce-46af-bc29-8103baa88566.json and https://artists.proofprofile.net/proofs/artist/6d4078d7-8dce-46af-bc29-8103baa88566.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 0x68e74e988fdcf50497ba4d011619b4e435a775b9df08fa00fa515baca3ebf95f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZTAS2403217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc631738f241a13b83a8acfa1ae92df9b80d5250d7d37ff2f0880ca916876e4b8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTAX2443024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b1d60da4222f9de5b0149327adedf43d66433546de90d8674be5d5ce6b882b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:15:50Z), 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/QZTB52446644.
P-ONE - Johnny Trivet - A pořád jsem down
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310ea6f599eaf5f2679ecdb5888ae9d9bb543674109e23b6f916cdc04f2c6286. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZTBD2442152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f36c0fb64a32338ca7504a672d5a7b957a0112a4a45bc9c12ad5b1eaa58455. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZWFE2406159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c1f3a4fb166b3e124ef5a79ec97a4eea352066ba147bf7fe9e6eab0e8882d7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZWFE2446199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0baab6b10ae0d7dcbc982eef11d64d8a1adf7a8292785e1db3602193ff2020cd. 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/QZZ7K2462370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c450097cb97e0f339d75ece66569cad8ddf17dce5ef5255093c7ba0e21cc6d2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ32532941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27a1d198ec6d4d85659f6f155a400dc4bdc053dbe82e165f547e33a85a5ddc5. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZFZ32531583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d01360078fe435114146122840ed4c95ea88d6ab68547801d2f57089d71c5e. 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/QZFZ32547762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc770f4beed3631325bc60f2bcdbd40c72557fa862eb4a68698092c19a398cc9e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:38:40Z), 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/QZDA52568179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c9ec53c63d0036b5582733479d4e07f3a80d1c85883b687ee4e549e38f8344. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZES92543163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1339ccf6612798c12c0726a96b9851993061f0d77393750586751ea9abffeb81. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB22518082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811cd7697a4bdb21dd11eb0d1ab3975ea75de6c14e67983b8d86c7f72087f17a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZZ7Q2559691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88d72c6d858ca1ee954b5f2db3a5d413de137cef556697127508f3579fa5af5. 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/QZZ7U2502609.