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 0x5a22e5d3ddac3de57d9337be997757ebe336e4bef55c75b89ee8be8ba909b334. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c190e12-4511-4fe1-a63a-bc5783591090.json and https://artists.proofprofile.net/proofs/artist/5c190e12-4511-4fe1-a63a-bc5783591090.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lean On Me (In Aid Of NHS Charities Together)
Lean On Me - In Aid Of NHS Charities Together
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 0xe0c3a4b4af476c20ee03de4b58a9bda718d86d8215e73fe54b8f040ce52b1404. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBUM72001727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ba257a1aa77136b10241f4f0e8439284fe389b660f039ade582fc054797e38. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBUM72107800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92949b4ee31819409cddcfde4efab8235353ea61aadc75c67b4dee5fca5a876b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:44Z), 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/GBUM72107802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca34e846fba2a2cff76a50f49f52a7f779b534d1dcb69fcdd00a6e1a56531cf. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBUM72107803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66403d216ea182db43b4de046bd1c199597a499bd924bc84a0859fd50325e5a9. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:54:27Z), 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/GBUM72107805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53d50ec7716a3f6f5a324c6dd6f29743e8923abd06ed22765ffda0f2b1c0dac. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBUM72107807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd2ae48cdc3b371b98a737fb2e022b177d94a9cc1b6468a686a0398fa3af51a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBUM72107808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411702cac755cc97349d75b2c2daaebfbdf8d3a723c25bf687624d66f620fa21. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:42:34Z), 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/GBUM72201109.