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 0x12339ce4ddfae8b72f731cf8bc26475b6c395fbf6f22dd7416092d9b2df84976. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfd5b6bd-c91f-436e-9579-22dc65ac7423.json and https://artists.proofprofile.net/proofs/artist/cfd5b6bd-c91f-436e-9579-22dc65ac7423.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 0x3c2e3c0182af56aea31a98c07f6d6f0e8afc38209627dc5e5052d9b00f9c8b66. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZMEM2392035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22af40a6c63b0ce967122d6845485e60d74114a7df8ee74d09c985c0b969b7b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:45Z), 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/QZWFF2355189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f76b85676e77ec312e62906b7905c90e1d56fbd4380a27d7990b09cc511197. 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/QZWFM2330431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcb4798ed916c694219275a79bd5db8b0fff3f182d430271975a9517b47a300. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:32:46Z), 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/QZFYY2590320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fb95c13958e2cd8764c00224889421ab2e4e9cbf24a1f3b79171664d213e2e. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZFZ62571259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c6fca10bca0e4ae79c5d98eb3773feb5f8dd2aefd82322da5d4003c6052ed2. 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/QZDA62567310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875d6ed73c08f539b16b5999d0608094cd1cf0fb9ecd31d66a293f94fbe0003d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZDA62567311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6064abb707adac23b4879b2a1479534d13fa7a3cf6a45199d1df319de45b248. 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/QZTAT2435043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ac6c6568aed7c2c429044906508e0314a31c791ea54ac57ab7ffd41d309923. 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/QZDA62567312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7bd71da2a516e515d9e0a884838845c8cd5c300d8b1eee0678e3cf82ee723c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZDA62567313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcb4798ed916c694219275a79bd5db8b0fff3f182d430271975a9517b47a300. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZFYY2590320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07cf5067f781af4853d4dcd00f5495ba36eec80375fa72b96af9ac04e0ddb2c. 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/QZDA62567314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf13a614fe95f7e3df7fe1365ca5087b4574e33226e5ead73156fd4e1194e19. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:31:42Z), 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/QZDA62567315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3869f3400e79747aa5c9ca6f63fc937c76592551e093c821378f32e386fb0db4. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZDA62567317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d8d0425e786681d5da8423930bb410e8b6f75b05066634f8e421b0e58ef537. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:06:27Z), 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/QZDA62567318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1405d028607f4a9e0153ccf99b388e53ecdd8893a0600e86d50c39f3b0ce0be1. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZDA62567321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd82e740465730ea50009ca6aa7dea8b64b232fc59509d85972dfd09f8678d83. 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/QZDA62567322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3820c4a76ca730ffe312ef2a8fe54b6988f8c973d26fec4df488dfb48f11f086. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:05:25Z), 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/QZDA62567325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc830a80a762de66cd805e69563df36052b8ffb6bd6f22f93e710e07f2f2e21d4. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZHN32565460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf174013cb85822bb26965e30f01acda2ff31428f849b7b00c0e9e06c8f077b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN92513901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28777e2b6df7e619c12bff73628f1e01522f29e4e969c6d52defb288dd020aaf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:49Z), 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/QZK6P2575466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb9ca9aa4498e39a1ef8fbc350448fe188903a0d6d68f9d928a7c3733526578. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZRP42535887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8912430cd5e013cf42dba90932aa73a2c07095b5d1e7b5064aa44aec6a4bc18. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZRP42535888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df95772649d33b891f4740d412f28a4b2c84df74dee5bef66e571a96584b3b4. 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/QZRP42535889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22292c41dbc9ce1c33b38ef3a80c1bb9a9ca2042d291f054021ed2fb9537b316. 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/QZMEQ2530395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28777e2b6df7e619c12bff73628f1e01522f29e4e969c6d52defb288dd020aaf. 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/QZK6P2575466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4076983bd41ea93c1e724b53848f6941b09a117506239af3d3c6e4d9b0a504d7. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZRP42535890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40e88b51fe4fa20ae9e96ac4b5a3ce737ab51369ec35c191610fd2588534cc4. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZRP42535891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50e0b5d82d2b58342babb06283f575d320d899508ae52bd13b1c5b781506355. 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/QZRP42535892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4faab5d6a2379daf3655147ff2fedf3d9c23db288b74cc31b4042231c923895. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZRP42535893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6db7875336013e07ac9daa43f44b13319d170760995e7497775d920cc6e673. 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/QZRP42535894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbf79a6ee03cdf4a98f69362195677132a9d7d3b016ad8f9650c68d5db2d02b. 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/QZK6H2565605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4098ee7d0f98ffa02ea37d34849fc560dbf69338e7d9747cf0ba8bcad9a969a. 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/QZRP42535895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800aa24dc13d9a31fdf99a23b7e552d874ed753dd442fa173f6adc6bd562f83f. 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/QZRP42535896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf174013cb85822bb26965e30f01acda2ff31428f849b7b00c0e9e06c8f077b. 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/QZHN92513901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829844c077243b7d8900b8f28c60883f77125a3f6d6f1fcced571f2f49f39146. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZRP42535897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3ce731baf7eef995e4cdc4f59ac38839e6bd5e7a6693be163ecd5aa61e3f7e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZRP42535898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7da20b00c2f6908a24f1229218cc65ef79b47949fe1348e0162c88692f7b32. 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/QZNWT2546991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8efa93a49e08a452b898b7eb4f7b074ea5d292ed3498f5aae86c9664dfacfb. 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/QZRP42535899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3387837423ba0c7cf4db4704059abdde663c5bb651fed1477700aa2a4da14e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZRP42535900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc854429c8051076e585c2e16dd37ae61cd3dd875a50056339c5f8aaca64b11. 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/QZRP42535901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702ecf0370b305ee65f50cc861c15dcb5f76ac3c70ea4d1a0fa2099dc684b0b6. 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/QZRP42535903.