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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c490f6c6cd123637190fb76c429456e61bfcc2552a1d0969aef6789968c5a4. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9f57d11-601b-4338-8365-f471ddfe7598.json and https://artists.proofprofile.net/proofs/artist/c9f57d11-601b-4338-8365-f471ddfe7598.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc71f42650c73644edbeba5f82cb8a3f483927112f49af7dad0abe15107b450. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/LTA251600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578400660473f370276acbc1a22d8b3eb3a184815a8b298d4fec4624e9ef0911. 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/LTA251600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86fd4ce5b080cc746286986728aa080cf932e107cc0dc2a4d82b0c57a5d258d. 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/LTA251600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ed8876b7c0cac8df89fea41bbbc3fcdc5d6fefdd2c75208d27277e3eaf323b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/LTA251600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9b247522343b1d34c16d087ca32630a25e35dd5a37384c3e5058f95b48ea7a. 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/LTA251600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eddef2b28f08772df666c2647e8af75c3a5c3d4afb0d35f4761e8f09275329. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/LTA251600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1105f90edbc56f6afd98b14ef4c744a131b6ff46926cd487cd92ee1403356b67. 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/LTA251600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241926d35c69e3e3202e3f20d3bd1fd17c19ec65bf1a4c73f203f75660ee3118. 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/LTA251600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0cc2adc7374302f8edda3b6cba9502a87060e0b071208cba4a36817973695b. 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/LTA251800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce46ec28571fd3b220efb26bd83895c9fb2d1f14a22799be682426f30d19948. 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/LTA251800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d5dda5f1b3441ebc37db1d9096072388758616ce59b89aa122387f5613c65a. 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/LTA251800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0bb7ae265d1d598fe7e0d629d3f66cece6b4be72bad14f0aba2cecc049e67e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/LTA251800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99d15b71663cd2afeb8e3f8a055821002195914d850aad753246fe70076e63c. 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/LTA251800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0cc2adc7374302f8edda3b6cba9502a87060e0b071208cba4a36817973695b. 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/LTA251800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b055e57f7b3022794f13933cde1be207925aa1656d3553efc6f4ae9436fcba. 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/LTA251800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bfaafc14799f6f8786b428f3935d73ca9ae6528d4660022586c6afe6aa74fa. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/LTA251800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc977f19fcc5c071a614b29d6715eed731f0a30738699b3b68b82d852169e3c0. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/LTA251800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411cbbc8c598c46c6e4bdabbbf183dc0102b84df7d9e78c3a3142d41538bf011. 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/LTA251700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ad8780c16be6043bae10572ce0f884908d9fb612fdd8d0111cbfdb4f36b5fd. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/LTA251800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685345d0978967ef3d26e3c85c5362e21ef155c2cea34466880a1ee92e55e09c. 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/LTA251800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f211cb6aa4872448286d1b225b12e968a4b84d34f07271ed3de9e8184fdcfe. 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/LTA252200004.
Rising Arrows - Live at Kilkim Žaibu Festival, 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddf0a52557e1dc8eff9acab7cea0de16698578c8759abf9a0fb085f3b411b58. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/LTA252400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5a2bce1e338bafa246cf043a6a7102e1718df488dcf9f6d251a72d80fcfb35. 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/LTA252500002.