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 0x0a1dfbe99eca67e191d18966d5ff9facb91fa31f4f7c070645289f883ae0aec5. 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/ae50b348-0193-4c45-b527-55670842102d.json and https://artists.proofprofile.net/proofs/artist/ae50b348-0193-4c45-b527-55670842102d.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 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 0x2414d5021165fc77cc90978ee718c6d987770adeab39d60953e884b1c211f52a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UK6KW1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cfbe718d6db013ebad1e0028f3214e4021b5a7ce0ff074c74cb754ef8957e5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UK6KW1500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeea2df6e1c777a9d8a1b7bdcc7ffce72a68ced52a7094699eb9da97189a922. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UK6KW1500194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7bcbfcbcfdbb218dd7c3814097606b7d2fce7f11b4823037c287b314acb496. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBMA22029927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca355124668ed2790339596336100ea77e82970db03b0f763fef1ed3c5afe67d. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBMA22039713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bbd3f9e88e4aa1b2efa718ebfb5d1ad02707c793c5f5b0cbefd1cf5fabc61a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/UK6KW2200136.
I Wish I Knew How It Would Feel to Be Free
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2451bba7385a159ac774f7fc22b78d1fe8f93400d0760ca04a1400fabb89216f. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/UK6KW2200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e57ee44a8e89cea1345cf2bc298be68ede796042d7de45c180a1e00ed483db9. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/UK6KW2200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645cf6081e0ffaeb6f067f4287a34358637867fd97eb3ac5f5d1701110dbe1ca. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UK6KW2200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5e1472162e3cf2c3b5e4d4672a33ca15be3a19d4b56bf7b77630d79d475174. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UK6KW2200194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd7e97d03bb6e6ca02ceacf7b45bc1ef80d593638b263a60b14306a06ac3b6c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/UK6KW2200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1476eb6b9bcfdcc15077329f803b6f30d42bffe13db9b3c0fdba798f8e20d7e7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UK6KW2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa421588f3fa2111a572180c39d31ef2de03a099a4fd8088c492cfdf60093b4. 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/UK6KW2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b5db5959ba9a692749100b6797c2617707272357196f34378c7b38137eb36f. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:35Z), 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/UK6KW2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d40948ca2497233a82b2eedcb775db5558c048c19981a8605f666413193f467. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/UK6KW2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618ae3c06fbd696e2c88662cb5f9fd429a0749c69622105b9f71903e157e898e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:04:17Z), 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/UK6KW2300100.