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 0x0356a3516cf0c288e6dfdef86411eabae5eb9ce9d7761e4084df3c3927fd4d6b. 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/f43eb93f-6099-4ce2-9d86-5b8b590e9311.json and https://artists.proofprofile.net/proofs/artist/f43eb93f-6099-4ce2-9d86-5b8b590e9311.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Endless Ocean, Bottomless Sea (Extended Versions)
Walk Through the Walls (Extended Versions)
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 0x772b833abad98a5e14b8e607dd0873d37a06db9b286b48a3f9ba614b083d10d0. 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/TCABD1250173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd551af9ee0344978c6217c3f462d8358eece60ec1965117047d192c97c7e5eac. 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/TCABD1250185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc702f1ea817e5451da821583a9abb27121142f7c4531fcd8e8ea4ce95126589. 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/TCABD1250199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b09e2a2bffe222438a6e850f7deb46ffe89869cd28f5108953ed3a8a826ce3. 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/TCABD1250200.
Endless Ocean, Bottomless Sea (Extended Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec45ed32ec1cd4b6ad6e0d28d4e87cf1cc104830491831c23bc6ea11bfded326. 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/TCABM1302626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca912181c04c6dc570d2016514e588d2b9c4906cba07a4dce4cf47162744d3c. 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/TCAAW1181231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55bc0467bb23a7d64e9163225e4153213e31ebd12e4b91d35f28694e0f2bff3. 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/USWFE2290967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c3310333fc5a98476e177c24e57f4fd97f2044c7f21cdd5155921a9b89ab90. 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/USWFE2290968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45563398e278869180082a6e7bf7e2e007cf9d25ec568fad94523e613c94f660. 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/USWFE2290969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deae7942f8c492c07bced1e2a95c6d14ce1c21748dd29495a38a711b6ed5fb1. 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/USWFE2290970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45051ae06265b862a1912f6b8b84607b2fc961f2ddc61cbee125f7bcd473b1f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWFE2290971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf668caca2cdf0edda57e4595bc50b41bdc66d6aa168ce7cb5bf99e503ea210ce. 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/USWFE2290972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45f99e255c38b511b20a2626055c9c285dc3c53ef31e60ab8ca40a1e4b5f8f4. 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/USWFE2290973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d484249e2a24689c90720e30393d010b8f75bcfe66bb9afbdcd5c49c439e4d6. 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/USWFE2290974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29935f3ac3bfc41643a4488ff8fad9db6ab1e9ff4d833a11d6e96cab11aebf85. 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/USWFE2290975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed87b06eb87e8bd57a6a7747719165d977bcbcec154cafc4692d6c762710ad54. 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/USWFE2290976.
Turning on the Lights (Spontaneous) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e53f672f0f2ed3c5a722de55868d8e9074c154b817135ee0ee0d3ab2704c4c5. 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/USWFE2290977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a12bdea74efff70f8f9dd4e4a4c2d8faf62ba05c4c2ae0304d65c4475aa8ff1. 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/USWFE2290978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983520d208b06258de52bfcaea01cdb79d2d4160d88a57ff12ff8ef4cabeae5a. 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/USWFE2290979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995709dbc46f66cba133c6c89d239e3ee1784018491afb957cd0f0ca39bbda92. 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/USWFE2290980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f85f1965fa8ce98021063390bee8ce76b781bfac3dbbef98d5c2b616aad091. 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/USWFE1590352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3a7b4b2ed839f94438cc88a038c5f291180b120e46535be750f4f61474ec5a. 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/USWFE1590353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219c49a9e696c0ab42866512f6708e309fb85a28c47eff065d080a5bca78d80f. 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/USWFE1590354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecad107391bd398f85a701a149eaeccee296aef00d4cda44c1f7698ee90ff55. 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/USWFE1590355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4621b383214e85cb26b96a9a918b17534fcb00faba4c2d72a735ba66236dc302. 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/USWFE1590356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca8b7f1d7bffd68c21b0d3f6914eeabaea79716627e37e744733fc323247645. 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/USWFE1590357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba6fdb72d9c909dfe84aa2f846e0066753ce687ef322878e49decae1cd74c55. 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/USWFE1590358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3c4d6235a89da8c987d9e616519ab9516da76a9f004bfbafa79604dd6ca46c. 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/USWFE1590359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebf5faa6f892ca10575a2a9d96bb73b8ae76938c242241f62ab1ea012658573. 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/USWFE1590360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990cac5c4c7c10858f28137eb1a10a7163bd4f1337bfb8ff321f683eba066cc2. 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/USWFE1590361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eea64ce7f31cbfa8a248188ee6fdeb2ff3f85b755bcd93efd994ce5203b3529. 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/USWFE1590362.
No Longer Slaves (Radio Remix) [Bonus Track]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7c4b374ec8e4b144522297481ddd0d03ec75f411c920a4f2b27f709cb04230. 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/USWFE1590363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1691b6f2edf8bd78d8de2eb74e1d8fea38c8d72674229c973e16b649df5b8d. 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/TCAAS1081782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd445f6aad196c312f17749b311ac4ed0140ee136103a0beaf36c903a6256fa86. 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/USWFE2290966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8333f1c2c7bd0b8aea874b17bddb388c87bfdf499782788b7450eafad4d02bf. 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/USWFE2090752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dce9e7d348f985e76c847ec8c921b2e300fe3beb163a14c521c551018a114e. 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/USWFE1590297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4672602ed97c40107746a5e909568ec0863d174f296e37724602b2f946827e5b. 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/USUG12105449.