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 0x35ae581e52096528cd12995482c293c09326aa6e0dbf3c719a1850a5ad45ffa3. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d953b75-71f5-4bbe-97b3-de0bcdc15ff9.json and https://artists.proofprofile.net/proofs/artist/4d953b75-71f5-4bbe-97b3-de0bcdc15ff9.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 0x417f35f4fe0b0eaef6ce98d2a9c3818572dc348410a62bf4f2975ccbba70d3d4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCGJ2415471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34c7de7253d9e3e666ca181201688d98f709b23a46704b6a838ee0191e9ab77. 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/USHM82294566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bfde2b336ac467f60fd154f707bd5248be2b8b278fe38d708f476dfe498706. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHM22241618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dde9a5a470c15c0c4a923ea29fe7e297cec12d43f6a841891097a3b8e17de9b. 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/USDY42233305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c7dc81be6aa44915009edb68901b3c04e2e28e7e57c423d25c5b6b5f14aada. 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/USL4Q2131477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3148a75170a51342b07742d9eedd3cf725c9ab6295b052dd7355fe1f868fa857. 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/CH6552100130.
Damaged (But We Still Work) [Piano Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02845185aeb6d1c6f1c86012472fecc478b6537eac7727a276420731cc1ec4d5. 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/USHM22074701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6790643a88a55e98516447f29d2c84604b7e4ae86dc6cd76bca626e116b6490. 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/USCGH1901653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dc6e712df66372b330cbf63b94b46c8d9c66000d3471fecc1c623700fcc210. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCGH1901654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83537c8a49bb2395d1230b046d1b8e738a15540268fe61a6c829e81e8668b8b6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCGH1901655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf221581fff5a0b9c82addbf7effa29b105a30394997ad865b385c6b69ba3d015. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCGJ1919603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad495ac198ac18400fcbb44e1bd4013d86e770abd39cfddfb6063873c680de1. 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/USCGH1901657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f113b7c3b74998bb1e81ada4a951586ce87caffe0999067743e82aa4d286182. 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/USCGH1901658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83537c8a49bb2395d1230b046d1b8e738a15540268fe61a6c829e81e8668b8b6. 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/USCGH1901655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf221581fff5a0b9c82addbf7effa29b105a30394997ad865b385c6b69ba3d015. 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/USCGJ1919603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ac7bdbd104ab732c955bd128534d1dfe9ca85268f725ff93ff72488ca1fa2e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM81824537.