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 0x882147c2074a1b2dea4d7071443109e4fc9b18bfa6dd128fe765544278c15e9a. 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/27960a3e-16b5-4948-beab-e5a7d41f2b60.json and https://artists.proofprofile.net/proofs/artist/27960a3e-16b5-4948-beab-e5a7d41f2b60.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 0x5aa07eb851a64d91a47d733077186ff6f0a63e37d7a4295c254f382f3ae8b525. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/ARC571501367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600f9c880383573d3f1e8d3e21e166cb8b8121310eac08c79ebd78c415c6ab48. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ARC571500486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3371925b5d7102419ca65ed1b1f9b3227566e0d7391b00f6191048322e4fb41. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ARC571500487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a331b5c183ac24039857dc31209a0fd5f114ec3c3925090080f34d219195d1. 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/ARC571500488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9499d00fc47b95b5fcf79604a271b7f1271ca6be5774e8ded4f40ee72753cca9. 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/ARC571500489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8855c84ba1aff52d2558735817d45f69bf2fc7c0c2f5fae4d0023da406ff2df4. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:26Z), 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/ARC571500491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07285a5891573bfd049df7f5db38516432748713718b5092eca4e3412015cec3. 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/ARC571500495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cd421fa082dddb95fa7a8e2f4f037dd2f83671362b47891af5864fcc378403. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARC571500497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8504d63f5a1236b6295223b2e655f987bf7e9275cb0055e4aec04fb6bf93dc0b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/ARC571500479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce8ed9ffae409a5e8ccb06d14ce622e13802318938e0c0dca8a9c4eee654939. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ARC571500482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a8a9afc36430e58ed91be84f4d38b69271563b6c7a801298ed94127916477c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ARC571500483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35a2dc3279595cc5f843a20305a273d6df57fede40828e08b6667568ef65dec. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ARC571500484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa083a1f8ecd15d3de38e1cfbe78b606496ace0128594b8affaed47f32d6a4682. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ESA011410465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ca3d680e928b2b5969bc679363d850232800af65e3e30d59dca3254dcd8a60. 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/ESA011410466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f087292f9d0662c539a4140b5b93d00b75474522920969c453b79d29f8c239. 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/ESA011410467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e39a9b330c4b7eae7ec4ca7250a97ba46e75e370adf8fd175c2e9c0c7f7544. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:50:03Z), 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/ESA011410460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7567ea0df3d99a5d30e477b4ab2f7ac81c6733054f8c16c4522ab78c8f94cd5a. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:25:50Z), 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/ESA011410461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c18cded5d8e0a6e1019418e29a3a95ee14eb37ac1387ce0e734f308fd12d7fd. 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/ESA011410464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852ea9e443893f1bb341a4db30965da07b522ebb56b1e52a55e304cc0f1c3826. 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/ESA011410456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e5b78fb6f7a69d21b6f354ef5bd4bca6cbc2f20dcbc4783818f648240df1b1. 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/ESA011410463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71877a9f30825708d0deb38e5f4ba97fdc9ecd66afbda11ec333fe00368cc138. 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/AR0271600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013c99aeba3fc24fa11fba318d4024a04ae5f973c1cf9477618a7ae762b5c1f1. 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/AR0271600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503157215bf77092e5039f5b364beddded7b6b88ca5ec5f6ed9ae069f2e3d4e1. 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/AR0271600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc448fced01291a0a1fadf36efe5cb9e49923afd7f3987e590d0ff72ace6a61a. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:38:01Z), 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/AR0271600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72d7e44814e01c61e3cffbf4ab05d068a2763b5a00f5a05ef387d7f17a6c9b3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/AR0271600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca63f52948dd550dbf825bde706415a04b4b279190ec22967c408fab6635130. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/AR0271600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b926d5aa1ad63fe8d014fb4b108a0d9ee7dab382179bb5a92a72f34dd67a918. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:10:50Z), 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/AR0271600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9499d00fc47b95b5fcf79604a271b7f1271ca6be5774e8ded4f40ee72753cca9. 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/ARC571500489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd19487dcdbaa6952d6c7d2099f9ea7cf4ad006f5c4568c2ee3a6ebdffa748d. 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/AR1K22000017.