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 0x30d2864ca5c05d0ef6c44c854a2dc4afd928687beb473b566566e625621d8c16. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32d60532-0163-4003-8cd5-9b96ffdcba45.json and https://artists.proofprofile.net/proofs/artist/32d60532-0163-4003-8cd5-9b96ffdcba45.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 0xcd69cf910f601bd084994cf8eacaf4a135f615167857eddadfdfa0b74358ec76. 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/QM6N22256226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc034e13a230ff5af12eb0901c3bb6f4e0b61e3460625c44081a1e09147c02b29. 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/QZTAU2205015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be8bdae0c10470bd6f00b03723bdf1ace5e9a8f0f6eb097d99537ba5ee86970. 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/QZTAU2205016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7b07b4001209e0f9be46ba71fe29324a88074ae3f30bab42092aa74fd23aa9. 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/QZTAU2205017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f303b98ca185721a25d8fa59537f7e5a8b997e743b81ba7165f730dc9f9086. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAU2205018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0652a09f2cad84eaaec0c625ad9d90b3d928424289fac9aa03324ae79e2278. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAU2205019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea7975b28061e9448af3a414e3695baf2a668e78c16108a1305e542019a1b4e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTAU2205020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797e4e8bb598d5ad24e472203693360ec37695cd0f6c80f9284f3a38e74d64fd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAU2205021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737ccc5a3d29350d2b48a35885a6c0ae1f1da99f2694a9829389a278da912cbd. 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/QZTAU2205022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5b82081ad9f6fb0093c78fde472a810bec781eac749df5d9c21cbf2587a776. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAU2205023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e4c43e0bcbc190105f0c3029844eba60456c241551c33afd7c2d3c7c382578. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTAU2205024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2817e59a0890246d6bac385abc240fa4107ca1ed2a876257afaecff7e926ba3c. 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/ZBTEH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25698bd37aea51d1ae96f8699e4a37b3008b8d72492c338eb07580afc9671d67. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ZBTEH2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10070fdb582cfd670af994aaf61bd3379ab210bd4679bd61b45a491220352b3. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ZBTEH2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599d9bee3ac1052580a07e7896830212e6270017ebeee255ec3871fe2eb80589. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/ZBTEH2500005.
The Color Purple (Music From And Inspired By)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc119678d0d832985141bfae43134d6b39346090ef317e5764059a7cab07a94ed. 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/QZSYP2366842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440990eb98aee1f0566f54dd747785c4ff36ae751266bf39f67bf773f4c75123. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZQAY2487534.
Horns In The Sun (feat. Mo-T, Brenden Praise & Mörda) [Thakzin Remix]
Weekent Sun Sets (feat. Mo-T) [Horns In The Sun Remix EP]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112afc0fc5100c49cf5977182196caac8b1412862ea2e702937ff75c2a98d7e8. 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/ZAW742300003.
Horns In The Sun (feat. Mo-T, Brenden Praise & Mörda) [Thakzin Remix] - The Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc178adac9ce3430303dcc91356b6557e34122fcf339dcb9e69bc5bbfee5e2bd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZAW742300004.
Horns In The Sun (Amapiano Remix) (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b0f0f146c1165cc4f244e5a99ceea86974eefc1d67d1668db38c85cf8b8789. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USA2P2423820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb05a467ca6021a07a80b737f84c136b2cf3feea255eee39e081bc7efbcc5c8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZAC012401640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe213482747adc4ba1d14affe595910f02ae575b3c0a15be37e9a78df049bb90. 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/ZBP2U2400015.
Each & Every Day (Life Goes On) - Da Capo & MÖRDA Remix
Each & Every Day (Life Goes On) [Da Capo & MÖRDA Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf478ff4ea2fe3a98c5351b711dc5b905ec2c49a79773927d827d5dad0f8d2b68. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCPZ2423726.
Each & Every Day (Life Goes On) - Da Capo & MÖRDA Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb3be53d02c592d104f2d6ec7524a87c893b879ee54ee892a9317dc1807000c. 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/GBCPZ2423727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558d78c67816904db056c526f466c0438cee3954eb2ca0070653364f0c4cf578. 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/ZAVEH2400007.