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 0x7ddfe6d2dcdd3aa5276f6901f16a56b11302bdc48f42516095215119c6eadadb. 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/e9234a2b-c96d-4a5b-b330-8734286cb49f.json and https://artists.proofprofile.net/proofs/artist/e9234a2b-c96d-4a5b-b330-8734286cb49f.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 0x646e251aec7f2b535572c87112987005876bf5db14724df5292402526b57cfc6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMEV2501239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6842ba0d71b6bac0f437f42906714ae7eaad92fab9181f98173091e548660b61. 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/AUQ9D2400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383616d0ebaac22a364a02a0b7be5b19f8088da2d3022b578c72484f429d091b. 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/AUGBT2477442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac01741f5e881954bd16d26ed2c9a9e2f03bd7f22025df65f23ff353bc2658fb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUGBT2433898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f957f2fe5f89b807580ba0cd797a65a44c3691364b34ab2b117e061dd9dc895. 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/AUGBT2402156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33eb2e232255e533657ce0f222fcac892d181b93037dddb7bb1da98514041705. 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/AUGBT2406252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b02c6933ed1a10f1dcf2ee81ce40b2632988bbf2c98a374bb0e0541396ddcd4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUMEV2481580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b477de4c794610e944bca2d498a92f3a968ae369d406bf5537f2d7c9f192088. 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/AUMEV2474602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8727565dbc9c9e36c99b6df2d4ae0c35344fd30ba589f27a9f58fd46ed1260. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUMEV2445249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd07a60e65eae28824ae9dc91e960c05b4e796b61fe01e40b299b2368fe1e1f. 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/AUMEV2426490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e2a898af16aebb19b506b602684a7b90ca8f7f124316f0e087c60445a97f8c. 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/AUMEV2425830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b527deb38fe9a14d49dbebea2dc32686f5a358f7efb50b5a2d8d3898d895cd. 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/AUGBT2357918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dfb9f3b79e9d6f808d83a44d87a5948b35592f5dd722d283c632f23d7f8a95. 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/AUGBT2329393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74bac5e302b9166347c5a9b96f4896a3d9352215d46ade26724b4445caac852. 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/AUGBT2329392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6020aa24a6a96c3e4b02fa61056ca8e01f8f70d72fdbcf6d3c3e4b3627e4adec. 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/AUMEV2394244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b3b7a1d5c94e4999b6baea98dbf09f34d4cd6ee9f7e2d31ce0957f53ae2c6a. 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/AUMEV2387961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2ce9f588d30015fce535da30adaf0fb8acb3a23ce58534462fecc50d330f9c. 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/AUMEV2390589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c070b1fb07371dc928e71715aba2e862b5539febf93929c6b9c3db2f978e92. 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/AUMEV2377041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68965180cb4727aaa30a0e22950c6ad93bffa2f02c55029709d82cc9da3972e. 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/AUMEV2368320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b6564d0ca66d00a323d0241c113ea6f140a365f512e406672ff91453dcc489. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUMEV2347285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78bac10ed8935a34fe5d0b306eef24ac94472c9ea8bc0d7d5c7ce181f05317f. 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/AUMEV2335421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51068e244e11611040e5a31a3b5b5f15e2f69c98311305a1fb560bbd92184bf5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AUMEV2313318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210ef7b55583577fbaddf06650f9117deeaafcb858c8a82d4d63d326e2e35fe3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUMEV2301340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2758cfcafb44f9f09212c1d64351e5c9658210c0f3feeda9709fdeed061fd38. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUGBT2200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45b1ebbaabdb2343d1cb2ec07cf8b266d111e23e756e5c38315b5775bff7fa6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/AUMEV2283385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97cdbccf9950ad7ccb41310b9fda7d08576e304e5809c77e8e9622d2f76ccf8. 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/AUMEV2277846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8443322c6d5bf53003fb9792e515488838f18cf1b714d986cfcb1864cd600435. 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/AUMEV2246988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3db5b7941ad88fce908bd7719c1f82af5ffe6882396e470afab4211f8de5782. 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/AUMEV2231551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56616554292d9d4a8b09afca1d1d6877160c498ba742ca15895668866298fc55. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUMEV2204870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a13515803eab7d030f834b3d8ac87bf23d47823da5c1b50a118b2538a836a9f. 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/AUMEV2167336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ac68f0213641a5967aab6bc1e6bd1c4534d951b2f047dee8c5602623a4c6ef. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/AUMEV2155125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8735ec87ffa223c9f5f279535a3161c57c8ab205491d29ba8ac756800e7029. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUMEV2144800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1dce8ec0846411fa0ebc90b3a80be3fd9ef9fa4e1480dc64ab80cac272f3ed. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUMEV2513522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f42696e8ba21f027cc190cc5cdb6fe1358b0b5764da5afdfc6d8f6ee1517a9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMEV2533473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7c6c4abab1fbcc986dcb9ea76959bdaee4588b11c619a6ed64a239fcf6bcf0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUMEV2578773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd762df35897af757a758c290c012c6933b0286122287c2efd48e795d29f28f. 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/AUMEV2501821.