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 0xb6c1a3829bb95276dac3e10dbbdaa1d4621c97ea67d595b423f7f7f6033c3442. 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/e83dadd2-ce9a-4cab-8f93-67545eb09b7c.json and https://artists.proofprofile.net/proofs/artist/e83dadd2-ce9a-4cab-8f93-67545eb09b7c.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 0x1e4d518a589183065f7b1325c23bc74175593c27ba97aaaea3e7109fb522784e. 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/QMFME2176663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56eea935abf7b38fc8c5e3e79b980c75dced6e1d7b4e8d61e3cc88dcf53d745. 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/QMFME2176664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1e196242d0fda2edf1aa3fd30082c53e92a1c03febce8cf1b01ebb131b7c74. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QMFME2176665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf3622110fb89208ef0822e3c7406c93caaedda21d9685d60bcbc2a045dc6cf. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMFME2176666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35acff5870a59f765e9f684d8411413b40ec78ba71ab62f3ee08f496f9049bae. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEA451407910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee4efeb2162693ce3cec17b7518bfac6840825fbbd90862b19fd2b54f5e4b84. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/DEA451407950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc075733e7b0943e66d1ea6ff4126adb4ad538d80397f15f4532b9db6f166080d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/US4E41522102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e940e85a0a2fea1039528a5fa630e3f965e25f5ad2e5628dbb4b7f942011073. 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/US4E41522105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2637f79875f3f057f0357aa16f2c76598b87ec2d07d345f9e9cd0753059fab28. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/US4E41522106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e98e4eaa5dab900c185dc99b7802f21fb130d8a2cc85480930c0b00277682bc. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/US4E41743501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1fc0adf13d1ee97c99782b2941faac55f22a6a0122af9279090f447fcea025. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US4E41743502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e98e4eaa5dab900c185dc99b7802f21fb130d8a2cc85480930c0b00277682bc. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/US4E41743501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1fc0adf13d1ee97c99782b2941faac55f22a6a0122af9279090f447fcea025. 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/US4E41743502.
Evil Like a Knife (feat. Athenar) [live [cover version]]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b8e15dc2bbcbef9434bccaa8a7bc3030458602cc4c98554fe4d596c6f86f6d. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/GBDHC2014803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd69b32f68bb082f1c166bf2bdb970941242d2097bec0a917c9dea466934490. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBDHC2014801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246e81a56e62057cec2cc5a56c82d7692aa93fdf8b2e0775c78f018c46521ffd. 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/GBDHC2014805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8640be4b0924f33e1f70ff53a370ffb0fd14a24e087329c61632ce1519eb5e2. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/GBDHC2014807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd998e4cdde784bc35bfe0ccedebbdf6ccc51f55424754a27338845a6a2fb7db1. 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/GBDHC2014806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc3cc03fead20d4496ef8fb248ed75f7081c3532daafadb00c7e10b2705139d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBDHC2335001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d9d72867728f236acbc1349a5d68c2b4f51df82b381545df66485cb4d8d219. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/GBDHC2335003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220bb6f6b63e9a7f93e4600687ef15aa5e21fc09cef3fc359f3b6059d364f89a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBDHC2335004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1939075845600e80fd5ba9f78b7653a9a90989e24d0d4927e003c83d5e912e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBDHC2335005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbba211d6fa148177934968e3d74db1c6e9f952120cfd30278cc07a6c1a7b7a0. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBDHC2335007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0753572a87ec958fd7b55d9587e3e1156a5fa3ff657c4bdf03100a3f9d9ff942. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBDHC2335008.