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 0xd26a5b6fc9914835dea50bf6af29a57f73c33091869911d26471adc069b1d864. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96e00c41-67d9-4c90-a9dd-76be0faca0ee.json and https://artists.proofprofile.net/proofs/artist/96e00c41-67d9-4c90-a9dd-76be0faca0ee.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 0xb67c64901da35cf81ebe1b475131f6529db78967d3dc929938d833f0d9994857. 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/QZES62423124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe09c295ec7de29c4929edaf6648ef7fc7b7eaf31298b7045bf232eb543db33. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFV2443555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd749e6c8f578b061bdc55d1c1be621ca1fd1c19b17daaa9c9d276f25abfd48c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:27:45Z), 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/QZTB62572718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dddf4db3affb3844737e27d583bffd48e8fe7337d091dd11d81fa3e382853e3. 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/QZTB62572659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c622785594ccce5b8d89f308e6d240fc5c802f66c98277fc3b1d47f774f240b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTBC2573388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7445e2bc967d6a025d0df0b5d384f5c08c569a147b60aed707dd26192df77d. 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/QZWFK2519470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01f15ecfdb7a478aba5267c0b15fa5fe826938f73baa1feb27d4f6def2343c2. 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/QZWFR2508489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9208ad0bd23c981bded44f9eb259c8ad399174b1fd5f3e490b9ba1f8306b4c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ792597785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79edeb0ede5c95c8c3bdb2bfc31d937800ce846eb79d965ae39b22cd49fd72df. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZZ7K2500342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b946c472ea081f1990293b0ecf5f93b692d7737f27426958751eda53c208a84. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZZ7K2500443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23377ded8490ac15377d81759c9301b7dad4310a625dd095b1a37b911f5d68c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ7P2539271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd675bb0d0ad9361d0259960eb3ace8188534602930b22e3dd973d23970fa6e9. 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/QZZ7P2539404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4ab56804fb4cae6f168d6672118a2d089a17ff9e42fac5ce993b6ca8371323. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:20:15Z), 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/QT3F52586441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aba66bb2f8a8cfff043abaced7dbdfb514f281dd44785fc7b2a50974d70f451. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT3F52586442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6bc0dff346f12458aedf554c5c8a469999da27b0b98b1fc732ed94ca50fe49. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3FF2598288.