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 0xfb43ce0c562766c1cd9805e20b56e1dd4741c6bf0ebc301a990e9ae6579cc8a4. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2fed636-84d5-464b-89b4-3134f6fd3a69.json and https://artists.proofprofile.net/proofs/artist/b2fed636-84d5-464b-89b4-3134f6fd3a69.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 0x08bb423d7ea5c152d4dc2dc054661848e885209fc51456f70158f2e57a0f6608. 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/QZZ7N2499127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b2fe87129fadbfcd9ae389f5ca2ee7da6414f8ef59b49cc1b1be545d039b21. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZZ7N2499132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b43120b4094df9bd152ce9d866c57449c384a6079a8e6b18df38932239ef0c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZZ7P2410941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bbee8e8aef7fdc6e54057d4b08883cdb7b47611d74aa96f781b44edd23264e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7P2410949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f4c76b0d0b0c4497407656e3db5fd335da90d1357b013e110da2e76a0080e0. 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/QZZ7P2412288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b1ab1deac3fe5c790e441b778739dcbdabf272e1f81a608a3fddfd33305a39. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZZ7P2412289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9332929ef4be553b5fbe453c6cb6a9f51e28b3be9005fac92be14e2db7c4c029. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZZ7V2460577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900a65f46607feb6a1930dbec7a575dc76e909c10ee39fbce66d43ed880a5f83. 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/QZZ7V2460578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944992981e3421dba16e9cec305446a12a8e991286ea37cf35caa01cb45accac. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZZ7V2460579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295aa0438a8663c208e2a79a03dbeb5af9d34c43d1b9b47ed0a3628d7845e4f1. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZZ7V2460580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cd700f76ef21c7b67f16eac487d983c4d0e010840e7374f94817ef232c8ed2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ7V2460582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cbf71839d98359c733074a60ca8543524f15c23e6e7fde002ec5335021f422. 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/QZZ7V2460585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db70f3b8ab09bcd7cc7111251ec63c78f27f06f194baf3af8866247e91a07c7. 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/QZTBB2554187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb780c4d93f35b6e8fd82954ec6ec38c2eb945bf0ff640ee51cbebf1b85ba1afa. 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/QZTBB2554189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aafe7ce30e531622f88ecc699a7a4dc27d5ff3115b0351a0dba76991d24dda4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:38:26Z), 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/QZTBB2554190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3ce1533695871e800f3c933028fb5e0004e9bf37a7b45bfa9d5ded894e20e9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:44:32Z), 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/QZTBB2554192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda1ad39007253d3b76317568e2992a4703b219287d215f49ba002bb3e191ad8. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZTBB2554193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244b9d7f7b9f96cca8f784e130c5e6a7cbbcc23542b065ba4720dc9739c15bf4. 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/QZTBB2554198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfa75802cfee2f83ba86882f16ed0998fff49d0dbf4f4d7e34a0cc9cc41d62f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:42:12Z), 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/QZWFT2523168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e091c9b031c0f1889db8e2c6607bc6eb721aee26aee2d8088a14648058167a. 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/QZWFT2523169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155a0c9b9a7e5bf34de02c91d833c1eb0ab360878906abd8722aa64078a4f669. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFT2523170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9043193af15f6dc5b5065c314b5152f2f167c18fa0a50994be86017c70cb0154. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:55:56Z), 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/QZWFT2523171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742f312436ed9b5b25809c35384d8500dfcd71895bc2a04c18220cfb355200a0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFT2523172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6f5e73bb1ed4773abb34f8407bd60ab6c4442faafa99918608ed057b2d426b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFT2523174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2375d57ab4740dc5531775645f8132b27e72da9a99e01ac7fbf1016d831ffef2. 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/QZWFT2523175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaad6117b3d1c9e7a011617efafc888dc24805ece3b4178d8e6b8c47738ce2a6. 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/QZWFT2523176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6c6185af4768e8e7b2ec7dcea5b04bc88fd781dd6bed0c5e9e7ac4813aa923. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZWFT2523177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7098c564c6ea567e6da9a0c18090068d2bcd1e033fc7cb654d369966a4816d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWFT2523178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba298b6a32d664a7f359e61b551f049614493e83a5d848b062f11d8403c0d097. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFT2523179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15291915d0728c50a87fc763e7c74902c5c0cacbb25c657d909f61bd147dce0b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZWFT2523180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bc8d6af73fe4fd3834c0c2db79b60fed730db36393a190f784635b6d0c87fe. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFT2523181.