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 0x60ee862607c7c0fed58383c967e8fdb8c15b76ae5a7e5bbac5f41819668b38f1. 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/f76d383c-2e2f-4d40-92bd-375254ff347e.json and https://artists.proofprofile.net/proofs/artist/f76d383c-2e2f-4d40-92bd-375254ff347e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Was so Unpopular in School and Now They're Giving Me This Beautyful Bicycle
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 0xe3285f7a7683b2064b3ae4c218bfaf4e1e4b08a16a71d9fd85e8753f71abee99. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEXCH0405002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb16f49623d4ec9f70c6ed87a2224a6ef09c8c32dbf9b5da50f23fd55dd60ea. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/SEXCH0405003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0009dc5befbc121da4ded55ba8dd825d677da598da1b4f726150616ac68699e1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEXCH0405004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4035bd7345e505e3e629c67f76c41684bdbd7235490f5a963c4def5ac4259a. 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/SEXCH0405006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcc8d5b7ddacd048aa42615f6777e8503c9ced3508c8ef21112e6fe1ad2789e. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/SEXCH0405007.
I Was So Unpopular In School And Now They're Giving Me This Beautyful Bicycle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343e5370b68f31899b5915297e21a1e9030e2ee0fadb0ac8677e7bc5952f0640. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/SEXCH0505501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f8a961f77fb5cdf66d7fc2261207226b27422f3c15c2548467cb4013bd966a. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/SEXCH0505504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f774d0180aa4b3f50e90543f16eff4e2b3a31a97f52baa19f216c4224b88aa3. 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/SEXCH0505508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84448d3b3a7be6dac1f207c3fcf419d2520a2a7cd37169661ded9d4b3028735. 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/SEXCH0505510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4c9571316c9146a7b1ec8c726c040de056d233d9f21d6e53d1a8d46ac27ccd. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/SEXCH0505511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef49cb875cb80cb5082a8abca7c0d15c451e8810887e1c69ae9c31a3b3adad0. 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/SEXCH0800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f0522161981fe90db7b743e37e4a22a52fad99bd2cd8f805bccf40b444ee69. 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/SEXCH0800903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e209ba0e343ff894f96a4901c1daf6274d2ea6d4fc82932be34fb4aa28e1f9. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/SEXCH0800906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577a420f1394298ed7283e3324218e738883f00f48235991497e89220a681d03. 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/SEXCH0800908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab780915b0c761887e407dba9245bc477a76b1d1d03afa5f4625d9d50dec215. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SEXCH0405001.
You Were Charlie Chaplin (billie no mates)