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 0x70898931df0129c18d1d5111ffc09dc6cc379cdcdd03c0709927cab8d02c1c46. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/463fdff1-c783-49d2-add9-b2a202bab819.json and https://artists.proofprofile.net/proofs/artist/463fdff1-c783-49d2-add9-b2a202bab819.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 0xcd656dd791c5cb5a29e38a8eb1fb5627a89e383d7df6239c9c316fb9cad142bc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZMZ92000808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe371a305ae00ee1b798404fce1f7c612b3e6774ba2bfe5cf3188d5bd86dbef2. 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/QZMZ92000809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c59f893e7699b1d3fe50438e392c94a966766f58a007e40dfe539ee1b31b65. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T12:00:03Z), 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/QZMZ92000810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee273e97187203a4084b76ef5ead9301cc2600a303b7fe33c3af22b08ad6118c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:33Z), 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/QZMZ92000812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799d4f4dda3297d21e1a52e2c900e6626aa26341015920ad36b073fcba365bcf. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZMZ92000813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe742f00dcb35dba0845025522b153f87d6a7e8d89c140a74f9ebd5603c3c1bc3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:15:47Z), 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/QZMZ92000814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078419111523e2ce29709854625918a766f97544624113405896f132c26166a1. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:58:23Z), 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/QZMZ92000815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9060a016495044f7dc8b1bc0378e89f7436df20b3e5254a26d50263abf4c9bbc. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZMZ92000816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324a0b59414246f391ec1433898a690ab7712a706291eef30afd795ac6c4ad13. 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/QZMZ92000817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dec286bf703412169fd3b473f5bebf7c5c3501152a165ae3ba6fc3f7b9ff56f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZMZ92000732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7592c8870c1785d76ab9aae859a6d3f5dffd8ebfa14aef95f179f679fff0b3f1. 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/QZMZ92000958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247dbd2875eadd2cfcce8edb28a2ba584ef870a1250edf5c94cf31333b21f4e5. 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/QZNJW2004365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9aa919f1c78545c088132b1e77243c7e8273da7bea6f4d5f13a1a454a4509c3. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZNJW2004366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb07cc1dc40f5e5bbb7cf640a04e374a65844640a044aeff50a19e0e2f6f2261. 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/QZNJW2004367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e499a5ba7052300b940497b1c41cef9fa1d93bdd06bc455ceb7cdf4e675efd. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZNJW2004369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1f935027acf359b9e6342638bb9c18c0b0dc5fc3dea891e819aee014af7328. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:20:34Z), 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/QZNJW2004370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d0ce54d50c1e98ae7cbd394f4583528e6c97bded26367df10b82dfd0ab4e8e. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZNJW2004371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51ece2153af273c786934a51ea096aeaec842d778d2aa5e6d4ab229347c5511. 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/QZNJW2004372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3098986a3b2c601a253defef9c80f1a0255433c945ef96b7fe8cb33e24521946. 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/QZNJW2004373.