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 0x3989b228149ad1b2fc05ed74b6f80e39fa787a52a78fe65f781f6bfe86f50039. 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/62b258a2-8956-423e-8703-c9ec2a4974fc.json and https://artists.proofprofile.net/proofs/artist/62b258a2-8956-423e-8703-c9ec2a4974fc.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 0xeaf1fc2f6073f993d08ad736ab6fb03e68ced1edbd782a702d8e68182ce54f3a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GX8KD2389921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a48bec70ce85ebe08377e22402ee1b43c6d32cb80e6bb1ea532e09b3db5142. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GX8KD2309148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf4171651d005b09de81b714fe32514d655cd70a044d8ee9386b91ed228ff3c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GX8KD2344823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52ea229716943691ca866ec7601619b7f167c034ab128361d2e483a5e677846. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GX8KD2392230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467b9d868cba1ccce023b37b1964c9be329b10877c1c80a390e5747ce166a0d1. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GX8KD2304098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d382174122e6413b97e3954434b6cab2fb9a5fcb65eaa268244344fb9a2d3f8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:25:26Z), 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/GX89G2306327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1618d325d3d35e9af17f90db2726af8b1499e5373f748082c3b6624035740b. 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/GX8KD2387702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa491f49063a0fa1b95d50ed14c207728d8d725eccea333a0d27b1807401dfab6. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GX8KD2398350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54806f3cbc4cf19e13ab935709780968ca2e313eac1a6a35561a3431b78b2796. 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/GX8KD2308677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2fb0c5eece02e6668389499b566cde8bc3af6a6ed7cc1b08210707267f637c. 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/GX8LD2324036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba654042fe1b671bd56f497cdea7964fc786b2de46bb7cfa30f4091d934d678. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:33:28Z), 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/GX8LD2396653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7864e462567e70b486f49a1babed7ce0eb7be4c8ab31145e6fff64f4e536957a. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:18:48Z), 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/GX8LD2394212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77b64f0fbc53819d8952903594be0e2f7383510331dd4f59ad409f9dc961d26. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GX8LD2331010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fefe8ec76cbb3b07a1bacc0a489ae2bd6cb4d6b60d608d5cd1b63cac307195. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GX5MY2378790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9e0c0205fcab8312c7c07d48326b4a5a2ea333e17436f75b9725f076f246c0. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GX5MY2362667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72feff199a3c5494217d12788a2a3fd1c0517cbce2a89c0b23df746dc4b14f6e. 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/GX5MX2448523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6ee0796328b3c3e1d1fba7259688856bfe737ddac2e291cbc47e166c1df76d. 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/GX5MX2426422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48891228575383dc2c1d999d95dfe82c5f00cc9b8d1f0befd23fd95eabf8054f. 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/DEAR42208131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f961ea090c8c67ea28206d23f8ab87a3bd442237c601f9d6d627d2e3943dbe3. 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/DEAR42248641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31ee7d27f8e96f7a0336faabbea189c00d31d227cebde495e6755ec5ad5d276. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GX8LE2357711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91046c77f8d2d59d62ba0d65253be583a7e21e4d1e86424bcb82d31ab8695b2. 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/GX4R52308907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d8db4a2716aa898a8366a62a749c76a5cdca611f418cc1ee33354513c92b1e. 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/GXBDT2342430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18608a749b544e60a680d64c5ef63837ddcaa49a61c33c0199ea74b50988f990. 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/PLI365653430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2346f56e965b45d46630ed08fed8b9ef829504905c9141d8f45db70a337bce5f. 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/PLI365031020.