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 0x909eab5b21c31a12349d6479238bee96f7203bd1f29b7da4f4c45a5912c66355. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce98808c-ab3c-40c3-aa24-73e2e72d17b6.json and https://artists.proofprofile.net/proofs/artist/ce98808c-ab3c-40c3-aa24-73e2e72d17b6.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 0xc18512de547a9b5c0ca7d059b65d0bdd5f451622906cfc5ad0b67a54efc38bd6. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/GBSMU5892122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7342cceb4ab5eb1c6c9a611ae4a47bde91c13ac78356ffe11a40f72b9829abcc. 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/GBSMU0028990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef12ac213bea05d2e67f29d5c0ddda8f8cc930900c3e5af0531ad89d119685d. 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/GX89G2251808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b51d01c0abf4b969a3c99e5f7f45bede6c99cdfc6eade2b889202b45d6a533d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GX89G2251781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095394a64675ad6c37b72873f433c45e34d84b96fe7be61e7d3887dbe6f8f4d0. 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/GX89G2251783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038c9dc01372efefb226aea887b22ceb06a3e61f9b3ac7d27628f1256cc42eb9. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GX89G2251788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1253123a86bde4a2bfc28012deed4382a06dbc87bb59dea31682cd4c3c290221. 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/GX89G2251793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2eb7206bde389f6322889339353569d61df018aa17b25f960a09ee171c9624. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX89G2251800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4d1da3485df3b48eae7ead1da3ac4f442d9e8525c7287e2c6b20ebeb49e7b4. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GX8LD2481524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce420d2d0ee6801fe26dfe30e244453977a08fa9b17444f64ef5d148a36dc4e9. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:07:59Z), 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/GX8LD2432266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6197ebd1eb516a9443848790fa86f91cc76784b4d6ffa4c17d38564129510a17. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:46Z), 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/GX8LD2413886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07075e38908c320c62792d1fdd41270a7b18f1f5cd981994646652b183bf7d0e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX8LD2474349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0415dc4922e6c8bb1040f700befcd165c6d653e71f8710dca473692050b84b09. 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/GX89G2543300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba15dc209c030a5354c31c634d6ed87cd52fb6fd06204704a341e18892aabb1. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/GX8LD2583775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc1fd436b2c754bd0c3313b118ee9fa2a426365a11c980d40556883ecf6fcd6. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX8LD2563637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8e226bb9c50dd8284a0a2e3abfec1286aa6c9ba675249946ebe7f6f7b48d1b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:41:52Z), 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/GX8LD2539932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88660a8c0afd3d07da88195bae32684cf87cd05a51595136d128dc55fb496f59. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:51:24Z), 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/GX8LD2592095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725c33fefdeed2aba06bf554586e7d34d7cf4f6b594b4aa751f5d649f0b1ee3f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX8LD2560509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d05f81e9215e4941fea30aac8dd3d99171190e82edd4780c7e53c05cd65719. 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/GX8LD2589317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb3bee3fe4d8a8a56cfacdd5afffd9fd3748b465f4f573ad8a20e47548e599f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:29Z), 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/GX8LD2520244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef971bb4c9bc9864f468062dead2eee4d4fb0f44e2366946b02cfd67001f53a8. 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/GX8LD2536243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6679d351edb577c126dc6340972a62292c47dba8438a01be67bf02d7224ff0ca. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:39:58Z), 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/GX8LD2580921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b9f2259de32065fb34c5cd30d64bceca839aab2598e64e6355107ef7bba92d. 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/GX8LD2570742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa137e4a891e9aede55f18720bc8ccb9fe33984eb3480c48e47a577f2c712267f. 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/GX8LD2598814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732c1df980a148332e6a6d7c6c0c084fca9a27a00cbfdefa08b2acf57cdd4a13. 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/GX8LD2553312.