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 0xd2ede76d0bfb0e8323e7391e27fcef2a516384635ecbe3f0d352974cda2a5493. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ecf3b72-760c-432b-9c30-096128db53bf.json and https://artists.proofprofile.net/proofs/artist/6ecf3b72-760c-432b-9c30-096128db53bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
It Used to Go like That and Now it Goes Like This
The Moon and Orion [London St.Pancras International] (Live] [Instrumental)
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 0xe25ddda4823541354ad7bd0e017979ec06f4add56afbd4d83ae12a4d56ea7251. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/GBKPL2013529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f7ace1a0e7dfc964e3fc8dc1f892ce91069f9f983a6f16fd9f171b82114334. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBKPL2013527.
3 Songs Arranged for Cello, Guitar and Voice
För sent för Edelweiss (Hotel Tape) [Lo-fi Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa113cbfa3a1c882a3a0489cb3788338840340c8ca85363aafc3656f1228d1e6c. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:58:10Z), 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/QM6P42301823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b18bf84d59755c903e8973595046cdc47ec250c24cdf7275a00cb61fc722867. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QMFME2288483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefed507a2ea06c2fb60a3d3fbbca16a8cf798fad151fbb5faedbaf1f200ed4a2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:37:50Z), 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/QM4TX2301257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4011d89dbdf16caa503be3e33aea3165c7858774ae069b9e18425e6d88a975. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QM4TW2325822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75357297d12725cd8679ade0d5b891b998e14e85a0edc01d12d77cfc18f90f8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM4TW2363039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08509458852adfb9a11190a3f349d099f01147d30112108e775e51f4d54620d. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:15:40Z), 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/QM4TX2333993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d659ce9dc751a7e23464addb3eac32349d0180cab6dece91ac4878d1f080b2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USDA12414374.
I Hope That You're Keeping Some Kind Of A Record
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473e336783230e4c004c937a852e284e6401936feebefd87ba524585bd55639a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:45:22Z), 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/USDA12415864.
It Used to Go Like That and Now it Goes Like This (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937caedc1d18eeddc8459d8ce131863342bb52e21f97269fe6a656199ad2b6cd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USDA12423969.
Three Songs Arranged for Cello, Guitar and Voice