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 0x7e08231c2ee4ff6628315e4dd457f740ffed2d5976aec8060a9e3d95e7660969. 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/6cce6959-ae15-45d4-aa68-7a92c7f82cba.json and https://artists.proofprofile.net/proofs/artist/6cce6959-ae15-45d4-aa68-7a92c7f82cba.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 0x88a1a5a37a7de6d8d54539e0bc09b9c1a977ec78245b7679f10f32760d982466. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCABL1374332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c77e763c3b34d60958cd05c471a74d7ecaa9d184f4322b76fe2ebcc4c728495. 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/CA6D21000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c264ebc5173d5f66649384fedd6f4005de9fb9bbbf31d2bfabf953c64ef708. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/CA6D21000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8921962554e0b3873a4127fab58006a5e4dd122decb87b3932ebe2966749f2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CA6D21000242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09971d03d2bc027808745f3cde169a60dece0a406bccd36e40c714bcaac09f1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/CA6D21000352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fde6299f1361711e2ab96398796e88c8b993759e31f2143cc4ff181a047324. 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/CA6D21400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ae58e164989114c947d01b236d1bf8edfd1e423853ab80f0f16703d80f278b. 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/CA6D21700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d18184070561867f28465ac742c7a78f413eb78860b2c0b1f61330c44d993ba. 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/CA6D21800010.
Invoke (Clockvice Remix) / Devoid (Levela Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861174aa7786dbe03d49714691dd85a822d529c418d40918dbc0de334a6f9449. 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/NLCK41075318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861174aa7786dbe03d49714691dd85a822d529c418d40918dbc0de334a6f9449. 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/NLCK41075318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7bc7cf8e17eecd4eeb2ab4731d17b25f2e58aedfc5318cac9b2675fc4dd193. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/NLCK41077642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21481ec6ca2e581e36a85a5e29ebe341f50a7e6d49fdd314703cae7039732e36. 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/TCABF1236825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e74550ed3c34db1938b9253c29df99116c686fda5924e4263032b88b2a45efc. 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/TCABG1275661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ca8f67194779ba7ca8df3e7d2d96cc51c3cd2b38417cc881a9d32f1c9038c2. 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/GB8KE1954318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c264ebc5173d5f66649384fedd6f4005de9fb9bbbf31d2bfabf953c64ef708. 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/CA6D21000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8921962554e0b3873a4127fab58006a5e4dd122decb87b3932ebe2966749f2. 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/CA6D21000242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c77e763c3b34d60958cd05c471a74d7ecaa9d184f4322b76fe2ebcc4c728495. 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/CA6D21000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c817084e6cd6c59b236d70e5c46fe93fded18bb72b9fd17463112c9f4fa83fa. 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/NLCK41088353.