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 0xa2ad0a63ece4d0c7b6f46e439b0599385c542e186ac97ef05946becd5ae864f9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75611527-4e69-447f-9476-70b2d3440b4f.json and https://artists.proofprofile.net/proofs/artist/75611527-4e69-447f-9476-70b2d3440b4f.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 0x6967da9ec8a03e2895b665fcb0d7803f9dbbaea4bb946386bd734d4a504eef57. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USCGJ0624164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198653fa8f01a8392c1ca13f701353d2900c449902123bc8a812495eb2742cfd. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:05Z), 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/USCGJ0624165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83587c27a69077abd9206eda4f22a0e2a780db46436008157e71c39aa0971a25. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGJ0624168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe621323350edeefd7c81421a1ca8f7de616cdc8ebf0d894b5124dbeed01e4e26. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCGJ0624173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb179cc66415c4801d5f39ec04a20b23627115fc52aec009b22a4155f761626. 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/USCGJ0624174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2edf86313de0e675b2778efac1f48bb12446f756ca8ad799578a4d97b7d2b8e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/FR72X0900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb410ecad08f5f90b1a8174953c0436e7d74a94548351c86bb3e382df98996d. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FRPCQ1100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693f27d2c283646b024e4c8ca2fb8601845bc397ca811a17c099d672c707b9f8. 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/PT4FD1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6124dad5cbb5ee7ec998b1f8b83c7d95d4f8283dd9b4aac7f17cb86100ed282c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/PT4FD1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdaf9e1618cdfcb27df92de8a8bc1919f11d906c801fe3ef883989199eb0bee7. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/PT4FD1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf94d3ffa2974b38e5fca68b52fdafd88dbb7ce203ee3c9aba3c7946e5de6223. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PT4FD1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffa5de34f9c313325ba1480aa6b05ab2e46a80d59a70f0a55163455206a9082. 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/PT4FD1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ac9482e3e8ce0d6de46e1c2fc8d695a164ee51490b7ec289c333e3ccc8d431. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/PT4FD1600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d89757884453591d8ab288d3d428d5f6580ebd3c3eae18c4f69a674c705973e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PT4FD1600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2064ae3959aabfdc0cc13744ed3d73ecdb0e085920acbf01d5d5e49797deddc2. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZFZ22048556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5110bd354c323e0d6bf690d900cad8e79326ce714975ac12254d74ac6c6b8d. 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/PT4FD1600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1bfbf7bd01aa0b39a5cb445b741154ede0b288c19d1444e1e1f891e3902d75. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/PT4FD1600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d693c18686b841f27cff9105b6067e5c89df286387bf3ef1fb17a19653b7fa. 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/PT4FD1600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8929741be1446bf66098e33c0feace803634b59a64a1622f77bdb9936f294b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PT4FD1600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f26f341481fc92a416e2d843bedbc0bf2b0d7f2d732334f3109793b5507ee1b. 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/PT4FD1600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d65afee657996379647cdaa7b340d5a68c2f47bdd6dd79ed2a77a5edc98f1b8. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/PT4FD1600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1699e1dabb6580e28d41a113919b86d67a4ee84a5402ffb54d5b122c1d5e90. 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/PT4FD1600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8929741be1446bf66098e33c0feace803634b59a64a1622f77bdb9936f294b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PT4FD1600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7152222bf274c0e1cae3adc63af059f73653deb69b8621961885f547e686c5cf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PT4FD1600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fc766c01f96acdab71436bdab4679bfac441fbda915fb930f13b8feebfec38. 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/PT4FD1600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d693c18686b841f27cff9105b6067e5c89df286387bf3ef1fb17a19653b7fa. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PT4FD1600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e023b17e7d742038cc704ae4d55726d58dab029a78f9ab0bdf451c0ed4354b1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:07Z), 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/PT4FD1600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcecf914e01fc1260c291f39ec9c5396f3b7096d854acaba04657e25219c1e3. 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/PT4FD1600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7db1a08a5777c0381025fbe54859170651b900614175bdb0d03038933244f9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PT2DY2400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedefc1ee612ad77df1e2ef25a18efc7ed8473c3c171dfdae87648a6942ba70fb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1431391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8866ee79de470f3f18eb697d3a7616322aff5e4c2462b032030fe2b2b43ebb7d. 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/FR6V82261141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a5c10bb19944a0b968cf94b6c2bd80406c33516aa772bff23a53b619dea7c3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGH0806788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d025405a5db50a19e591764992a890e7bfe77ff882a86f121f77afcf2941904. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USV351497449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7251c3941962193371915eac5404255106c8301a14b0bf684ada270d8cb21019. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR6V80761882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1589485093822a31d9124402e949fc7271ac9ef86f8dbb01f976a1a1148af3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR6V81738403.