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 0xefd258649c2ef6ad34c26f66f0a7f770f5e7b02f7ecd406f806637c001d6fc0b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63eed97e-b37a-404f-a2ca-14c95584c7e2.json and https://artists.proofprofile.net/proofs/artist/63eed97e-b37a-404f-a2ca-14c95584c7e2.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 0x9bc310359d312b0fc001f3e5e89d0da920c4177e1ba2d3ef583c7bff05b2808d. 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/US7VG2362111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa389f753ac8354a80bd70275dc1cbab0d8b01ac5e3a7b340779412597c9e734d. 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/QZNJW2279183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca490d5fa78d172ac0392e451462e4ebb15f21184b212d3fd530122ee91efe3e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZW9K2399895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae097d0441d94c230ca3fec007726461b9065e799e6043e4c23e42fa306520df. 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/QZ5AB2417343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff8d2b5094ddeea1a88632099aa6a2549def4f5b85aaff67b51f7838997ba9. 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/QZGLS2472523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b497ae518fcadc09a268a070ba41fc5000f18a530ff3e4ceb5b24053fa4cafd. 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/QZNJY2416250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b39b110fb67731006daff6fd344f6a767b82ee3410b99918cc9adca94e6ceb. 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/QZNJY2416251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eab833a2d30b6526c5c50f59a4fec5c0de23cce21063457c596b2e12d9d5ca9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJY2416252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70977f7cb657a2ff29dbb64083b5c7f9a4b3dadc1e3df9fb01eddbecb13fd4f. 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/QZW9L2349147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73060cb685606570ab342af30f633470f5aef0db95c0c23e020384dcd6f9134. 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/QZGLM2485743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075e47c6ae062e7eb1541663f8d4ff0e7e32e9ba1263aad4c5b00be41d27a46a. 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/QZNJV2037967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8f4e69286ef90c1e40f5674b45c2c9eaabbe666757c02a1cdb1986aef0d397. 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/QZNJV2038129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c492dde810e80bda0e9dc9efad75902a09b760b5bdd5ba6a8a893d507c363d1. 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/US7VG2480571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff8d2b5094ddeea1a88632099aa6a2549def4f5b85aaff67b51f7838997ba9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZGLS2472523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73060cb685606570ab342af30f633470f5aef0db95c0c23e020384dcd6f9134. 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/QZGLM2485743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9e9e8eb9fffe2123b9fad8665f9de6cc07be7e14cfce996d8697ec6226de49. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/US7VG2480559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae097d0441d94c230ca3fec007726461b9065e799e6043e4c23e42fa306520df. 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/QZ5AB2417343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70977f7cb657a2ff29dbb64083b5c7f9a4b3dadc1e3df9fb01eddbecb13fd4f. 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/QZW9L2349147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca490d5fa78d172ac0392e451462e4ebb15f21184b212d3fd530122ee91efe3e. 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/QZW9K2399895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bddf8861ad0b46fd6c3f09d8cfc31925b2dc68366767dd33e3bf13e80a71146. 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/QZW9K2350498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a63733b6d6ec17ab7de6ffcc986f8e9b6356a056dd8036f81cef863df0598f. 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/QZNJY2371976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917d6be252ead9db4b5c830000afcd320cce2cd0f85592414e07664ed0b4a71f. 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/ES71G2317167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd251fd9dc79af5d68998b5f3acbcdd7005d5ec4487a9a443da1d654232992e6. 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/QMBZ92307508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4150133837a5e24946ec290aa0298870ae71881eaba91bf5be5e0e577cd5c90. 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/QZMZ92367228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe331c0cf3e023d689d41e69f6c486114934e4db7c04c9ae0eec76e2a174f4bdd. 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/QZGLS2323691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f462866f4c42ad848bd6cd0f0ade6c1cc5952b57b6133f9c75ba0f31c702ef. 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/QZTVM2232011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7da4da326353d8e9ba81130660128643e1933a68af8dd4dea54af155e03306. 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/QZW9L2294219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5b0cc846890afe21c86e0dacb589864c2db543448680eded67c390b6a5ad22. 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/QZTVM2232251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47391a0c4940348a910d22c77dd24554b8676827a006c20116fc801627da4f23. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:59:46Z), 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/QZW9L2294218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b05bb1c7bda4a6fc7aa2143fe014ea4a1e3d9280001087edbfaa12a7853d660. 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/QZW9L2225913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f462866f4c42ad848bd6cd0f0ade6c1cc5952b57b6133f9c75ba0f31c702ef. 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/QZTVM2232011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd642bffdb9e70dcfd82a59353d0796a6a779c179241cfa5dd1a28e5726e41b. 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/QZHZ52272975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f6ab8f6ad35146cc56524c81f3c1a08a162ca47824d3ba695600c9034e5d8b. 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/QZW9K2438755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c063544f2c8a9e643358daf316e25e0aecc1c74ac2ed7f0f5ab4cabdfc9ba4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF2271491.