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 0xe31b73c39d103e20aa6c9eed9f60ea27a4a8bf3be82e44b4668031f983a97b9b. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9f0d923-8fe0-4053-b93f-f12c0f29dbe8.json and https://artists.proofprofile.net/proofs/artist/e9f0d923-8fe0-4053-b93f-f12c0f29dbe8.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 0xa03928d300df69ae609248bf6f43abb3439e432262449f7abc8aa70daf0682f3. 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/USX9P1362038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bcd92e33b3027ab4eb375fc9b5436c886feda97e92ed6146d4a1d309cfb5bf. 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/USX9P1362039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacc1e8dfa7f6388a11eb50243e838a2558e671ef096da36dd9ab4b27c01dd6d. 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/USX9P1362042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40be9dbd2bb5cbde72732e015625739ce42018366f500896d759148a9a195193. 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/USX9P1362043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d51af477466cea8d1167528a3cd234d915fd94d4703a89de37a4c8aa69ba24. 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/USX9P1362048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e7054188c27245f58b44061b41ac2aabff6e70a62eb6a9f080408a9e04c83e. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/USX9P1362037.
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
Fearless (feat. Glen Drover & Christian Älvestam)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72d10f1a99b5aedf193e55a2f154886b7420f5edeae682ffb1d29d171a5c8a3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USX9P1362040.
Paradox (feat. Costa Rican Minister of Culture: Manuel Obregón)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b296cf9bc7cd29c5903d12927b28795fd076309fb67fa41adf6d49d5bdf1965. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USX9P1362041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed34dcb90488f6d6a3cd1d4d30e5b4171629f09f7ad662bb9b83bbb4298c4e4e. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USX9P1362044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39fbb1fcf298522bda9fa8171d4134960620d9616d384f95a99a8d3b54541d1. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USHM22040703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284722465890e29cd9076ff6154d0215449f1bc1c14e82f4f6c07de58393d69b. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:37:41Z), 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/USHM22040705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8fb74c7417a09b91d7c4860742f7b6fc323dcb31d44c4d09ff746b48285cc7. 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/USL4R2034161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad55c86774c18aeaafc8ee1631e4e063f98b5aa0b0b9f930b2a201dce1789bd2. 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/SE6JR2407002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdf877c709be117d71ad9634456ed226253732e43b281e7aee976a61c9d3a6b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:23Z), 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/SE6JR2407003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272a9325c3842d02fd63b5a4e83c358d576c05a66d40fb3641fce2acb2bad324. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:57:05Z), 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/SE6JR2407007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a585aedd5631472b85c8e9841f7c30ff1c6fbf47a1da0175c879a51a7848c33. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SE6JR2407008.