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 0xf06b7e4bb5c1a4d7c7e9d6317569e7a4c4412698106b0ff33ef2e2a5403684b1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a614dace-2e0f-4839-9eef-7d88b42ac569.json and https://artists.proofprofile.net/proofs/artist/a614dace-2e0f-4839-9eef-7d88b42ac569.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 0xef83801212d84641e0db7c0882c4baaaa7e8be90972fec3e7012f30f0bfb4190. 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/ZA41S1424772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc22312caea926b544137713bdcbfa6868bc0b8f5b1be954476ac400a5babe20. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:41:33Z), 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/ZA41S1424768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f480819d6511630d4e8d9d6104860f970faf14f024b08eb16ea535c442dca89. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), 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/ZA41S1424770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9aa34357e339638be3397eaa177a8a3848f6868275c3606a10631597a7fe4ba. 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/ZA41S1424771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41eb9f9169cde2b570d749e781edd98348a286458b4c182cd78191a8b104b97. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ZA41S1800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0372632c966e7d3dabbf6bff4c9ee7689a81f5b15c579ffcb8c3a9954a848dc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:36:54Z), 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/ZA41S1800311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18d5ac71e84b9c85f9b51153f7dab9f82861844f6ff0d42c86ed7f53e3be2d8. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ZA41S1800314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fe1d40405830dc6ca931814992919e57c89671c07a22f99ba50fb563bc57e6. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/ZA41S1800315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d08f09d4f90ed8cade61fc3bb00ca0ffb4dfe2126a71ea1f4520a0e758150cd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:10:37Z), 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/ZA41S1800316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3256020415799acdde84518f878076246332b9106c76aef80a8551b83af9dd92. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), 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/TCAHL2373816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fbccc56642daee59a630cf96710d255d9b31137b99353444b3459c4657306b. 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/TCAHL2373817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ad704b91b05674af868d18c5cc1c49c62da2605e99737b544fcbd62e80d79c. 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/TCAHL2373828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcd2a12780ec4c648a1580aad7b25b8cabe3618c4972b78c0613d8c2f3ad1f7. 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/TCAHL2373865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6722f81a9acd4486773926de9a7a0686d29b89001ca01d0777752a97cb041a37. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAHL2373871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d37f62d48ed2c8786e794490fa792aca615716a2f05bdf7875a48f9a55d4d8a. 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/TCAHL2372804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945bd3855e274ccf21a09842a6337b91e799ed7f1be1355d283c2c10798e065d. 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/TCAHL2372807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e4059152012c086ad76bff9de0a988f6a2df705ad4b81f6f769148e5ea5fd7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAHL2372812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f2beff60810574c177d3bb2492a3ef5548933c58e475114dfa93a4b0fa4844. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAHL2372816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9acc1f921cdb232fbabc06ebfe6085d4870df798fb54b15663be27e11b4c95. 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/TCAHL2372824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e109c2cd78f1849b8397bae7c7103dd4d81623708f0500f450464f200529c9a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:32:21Z), 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/TCAHL2372831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7ecde0d46d4cad2aeb9f0e6a852ce89ed986e892470ebb9a4ec34ca61b265c. 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/TCAHL2372833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b70ff36c6946c97a3efcba4d0a203bb1cd1dad6602016f6fb048d5d9bab812. 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/TCAHL2372438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e5509f1b206cd3041c45055762ceedccf3a4316b172e4962b06699965b891f. 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/TCAHL2372443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9e23b21acb2f83c9b32899f763cb7f2aaa486ae326048b51287d3cf4f2aaea. 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/TCAHL2372447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596525d1b8065dfd39e46dd841c18862c2e957344bb59f1a6daaa992dd03a5e6. 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/TCAHL2372450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03047c944afcc244fe51a1a35c7c863ba8fc65145a0684432bc8549b559f398. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAHL2372458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f1e0052d35763d4e25e49ff66691399c0750b92e5e8f36bcf6e7ed48317f5b. 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/TCAHL2372471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a138936f2d9fd1404626f64ce0ebd7f2603b464c2c34605d044678f9634c96. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAHM2380980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243e0bfce1426e74cc4581e0dc98480577b673b681fe3a535d16884c17a0f501. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:30:41Z), 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/TCAHM2380991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f567f9cc26a210464c81c73cbccd6071aef9fbdc1461440b552f75618ce772. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:50:28Z), 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/TCAHM2381015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f4a51d463583a968ceee8a95e9bc562d0e644dd68b7c4b4bc397cfeaacd608. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/TCAHR2380459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b4e778b52354dd1b49951dcca80f10a1be391619e5d3646412e20858a7295e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:41:23Z), 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/TCAHR2380437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920740bdb9612159f46c5aa1eb72a27955dd6d80b5e6ddb3b2cf190c8ef336a2. 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/TCAHR2380856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4462b360060d2ab41f00685723b4a0d767b52591833a6d365e8d95ded51ef34a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:36:04Z), 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/TCAHR2380876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45a5c86faf278d75bee69c51d056f592e4168834b2fc918a9588719d7ff65c9. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCAHT2305939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f46d257b707cd927de4f27ad8b6ab87f47077cad350b2e3722a10a299acfae. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAJG2592285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dd7f2ca7d73638f87fe8b3114553d4480117c6dd71b32408531a9359898bef. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:36:49Z), 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/TCAJG2592180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa259ba1d203657c7a8ac8e3e39805341491621b9bc261c6c20f3f953233edafd. 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/TCAJG2592356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258f19857fa4cb2dd5111d7c013c2af0d8a0b59742f9d2acede27d4be1d3813d. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:04:42Z), 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/TCAJG2591997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a5075b96e5afd632af67b2b5b15b61602300b93e41986902ee9156b2886009. 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/TCAJS2564607.