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 0x1efc60eccf725316d7a136928073dda0d2cb8e34d3da95b667652b0323a86521. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31f01bf0-eb4a-4871-9276-83a8937e4896.json and https://artists.proofprofile.net/proofs/artist/31f01bf0-eb4a-4871-9276-83a8937e4896.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 0x70f39316c10a2fbc07eeee2905b5c285bcda067ccd6108093b607f5687dab831. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CH7812052270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6de93349ca24c1b95a16071506a0a3eb0188c9e427775c6840ed797027c6b08. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/CH7812062984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613ae6d897ce8dde3ff5de8aa7a77b9843977c9f72c393d09e99cc02d263c34a. 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/CH7812103905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca2442c1abe5dcbc8dfcbf126d779020c09d344f7b8ac0b903e5fc252b3cf98. 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/CH7812103907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d05a97e96ebdf40c81bbf12675a481a3a013239eb3e13a1fe35fbdd39d8d4e6. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/CH7812410831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4eba23e6c15f6fcbcb66b0b49e32cbb221be515d452462716176a3f3e1fc84. 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/CH7812410832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a722f4250466dead993864d5dc84b6e7de2b01657ad0b41a2078d64746faeb. 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/CH7812410769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224cc258aca0dd0d71cac6cfd5b9dbc17cb1e9c1cd8f62e6475dd61191942437. 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/CH7812410768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3137bed8d9b6169f47c750bf7d53cb503d1d27e1d2a0ab963d62b89ce7ee7766. 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/CH7812410834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc0d584313988de2dc4ec38540c7dacde6441a77efa88d46369ae19b2dbf24a. 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/CH7812410838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf69b748b23ecfd292470ebf51f5f1204ad83f9544b04fcf18a8ce02aa5a0794. 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/CH7812410770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dca514335a3e6d1d44b3ad97839cdfd4233200377085211fcd705a031f8a5b6. 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/CH7812410840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bb6ceddc0aecd78f300cfbb37789dedebddc02d9c62d23338d216db4a3bbab. 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/CH7812410842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44252ce6ba7c3095fff729ef3905b465881326f232851629ffe7e3aba756c407. 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/CH7812410843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48c1fd6047e8b9628927d85989c2efe395d13c5f22fd65d09eedb858cf04219. 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/CH7812410844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bb39b176d587401c28313b534ae87bf89ab787e5b493efba90320263775477. 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/CH7812410846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48463f17bed303b2a905b0decf19290d6fd18ba9ba5095f44bcc14d42fa76e72. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:01:58Z), 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/CH7812410837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90fdaed014fcaaaaf1f67576e3717a605e823baa76630f52ccd09999ee9e198. 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/CH7812418179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53828ea745796c96083094651508058c0b60902602ef454c425d0a46a5351457. 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/CH7812534184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2e625b9849447b916ab71799bedc5418ae21af92b0f666d1d60bf1d0ba0e58. 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/CH7812535163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c11efc2cddeb8b86a7005d7b3b8ee106126301e362a8a860506a8feb3585cd3. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/CH7812536301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2837242c2a75fded3e101ef2743d528393468802f3791fd4a6cb089631b6e49b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:37Z), 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/CH7812536302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2e625b9849447b916ab71799bedc5418ae21af92b0f666d1d60bf1d0ba0e58. 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/CH7812535163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6deecc4fb78b8f034d6dc6c4b67789baba2a9700f6bce07e36f262acbfee774. 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/CH7812532658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d30c754368d6d0f202ad7c18dcb784c89431946299bd8afee27f5eeaffd14b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:42:52Z), 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/CH7812536304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a1dc15a15e97b077f99e95dc2bc2b4aa4f8d73ea2fc3e193bcd513d241f356. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:14Z), 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/CH7812536305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4c933d781e8d91bd5c26f5c657887014b92c3dfb78d71ec18808a1b090c17d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:40Z), 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/CH7812532911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0ab821df37482f37d884e5f8ce6d96384428862e93644820eb8e693e47db8f. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/CH7812532912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9adde5f3c076e29ae729bf5a4e91e3f365014b53c3a6d90f9aadbb57fdb36e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:06:59Z), 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/CH7812532913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a743031a69bcd728e1ca2652457eeee7d268a53c3893e73868e2a3b34e854f8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:05Z), 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/CH7812532914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b98af52b2c1bf4da99caf0e4d7b4593e7c4ea53cb884bec46e7e844c135340. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CH7812532915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6afa6072625e27cf8888ebaf7bf804a200aa58225ed11692fb0dcf1f378ce1. 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/CH7812532916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e704862a10c7aae3939d140e2d7616da11c1424d0e3b2ddfaf5422c2ecb781c. 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/CH7812532917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15c9fec8f33744832c690a52f8d34de46c2c3bd8551fca07cdbbef0e76e7477. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:27:33Z), 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/CH7812532918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9a5f5a5b2de7c8c9f86bf4e15a1e4a0375b253311931da77d285d79b34c069. 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/CH7812532919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a0f7ad85f61a225adcc11a9fa6ab5a1078794abd9d85d9ea6b4c219784c835. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/CH7812532920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baa03f10db35f46e191995944ffb258b5d79501931021802c433a9b9553f029. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/CH7812544939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73b9777b83eebf67b4cc888fd088bb63a6838eb30767c32e8a56fa3e46fe283. 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/CH7812369089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9a35b98b1595b5de1a30284cef64e3925a8061f62b948a2e2c710ef8d04c47. 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/CH7811710816.