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 0x13a971bea712b2d4a3f1b420a6f674eda44bc02bffcdf544526a67c54b4b60de. 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/a90c80ba-a3a2-4900-96a9-ef54d2aff255.json and https://artists.proofprofile.net/proofs/artist/a90c80ba-a3a2-4900-96a9-ef54d2aff255.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 0xe464411048bef1951e98d9781cdd37f4b68919e07f7f6a6474a14ee44875fc2e. 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/QZES62270420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7697f1d65f322771efa6d3c2b73451e888b3a08d7d51b811c22e539be4fa192b. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/QZNWT2237967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4750971e1f521ff52b51e852da729b6ea0b8ffe4a32f83f99f9cc71755448d0c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZK6N2339647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55b4b8949348649fe0b8248d2cce89328ff0a2e6ecd3a15614fb3ada84efb11. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:43:49Z), 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/QZK6F2303053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5c290ed55b1ded2c9f15f8dc9f0e46ad1fde39d80ae6297f1ab0776bc0f11b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZK6F2303055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa055364bc97751669bb027ce8ea518485ca3680a2c91d189a1ac0507dac7bd57. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:10:30Z), 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/QZWFL2394879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b9c720f96b45101a7a013faf4729c8ec70192f4d9cd970f42cf0152d307d5a. 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/QZMEN2476622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6a6387513e0af4bf54d18be622a6bfaf541d88aa9a475bdba603cec1ce5df7. 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/QZWFF2442849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88db1b524d464aae2ac7ca7d6382934b114cf87b87d070322a8d665aea1a3d44. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZDA52535812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd582302fbf5dd860487fc7a5844291f2a67511ee36aeef16a1de8c6db3ae017c. 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/SE5BU2551760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8dc8e6379d237e090d7ef3c0f489c437688de081c043c617b475f70d094a5e. 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/SE5BU2551761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596cbf094dad000bc4c2622842eee18943ca385256b32e966517e29663bae3f8. 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/SE5BU2551763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06693a8dadca77473bb9802fa5ab7a5404962f289b671cd2da93f5d627e07c60. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/SE5BU2551764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6488de6a8a287474aae79e31c7ddf7f1a62b5a0b733c1bfb9fecd93a7fbbfc. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/SE5BU2551765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88db1b524d464aae2ac7ca7d6382934b114cf87b87d070322a8d665aea1a3d44. 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/QZDA52535812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a22e3d446c601d3a9e840dcd8bc1afef35a0ea2eae644c01513dca67746ff4a. 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/SE5BU2551767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6936f9f81a033d42e78337ac9fbd82024f6fee33eb69d41c1f9cc4ca721224de. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SE5BU2551768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03acb7efd4e33c362cf1ef07fb01076fa514932063411316e2da069823f30879. 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/SE5BU2551769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22e4549b318578779e9372c397029013581a70c670da2fbda130479faf12c93. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5BU2551770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fb146afbcc0f0b4675876dd20cc45d3a0fe62ea8e6eb8f079dbe98199839f7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:52Z), 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/SE5BU2551771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7ecb6cfc100dc09fb7684e06a69a29ea3b49492b1557165bdeb5c95f37cbd0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:51:56Z), 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/SE6XX2568913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa08ece47bc6a55c72836634776f7d8b336430ca196418eb762f00bebe32a506. 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/SE6XX2568914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9322778b28315cffd3610a840cfff9a40e9b2f7478e1ebbf3c24d5d2ff5efd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/SE6XX2568915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14dcd95d61e6ab389ee1f8d46ccf4a827966a85cf0e3dd580e47688df3a84e1. 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/SE6XW2564516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fa51a5c714bf9d8dd1a3cdd0ab2f1cc600c241586ea0a83735630f28adaf78. 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/QZZ7S2496609.