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 0x843a8978161bec2f03a7bb42fe0db9c2277d02a53163db8e1d565e15a21bc6b8. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adc0284f-4af4-4fc7-b90d-f886282f6723.json and https://artists.proofprofile.net/proofs/artist/adc0284f-4af4-4fc7-b90d-f886282f6723.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Don't Need Your Love (Thomas Godel Remix)
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 0xe511944910664137430cee5f6fa7432a857cd300aea8032bc7c24a5873f743af. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/CH7812194105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f11bcb849e137d87be105be0c91d6e7d83e996fbafb8c89cf90337d619d42f. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/CH7812214935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc88d44d29b557c475217904488f6380125e7dd97cfc7b3ca4bed14e54ada23f. 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/CH7812366937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e356cc460b62272dafbe7e15201e37c5f72d2605c01c06c4b9b2ec78369767. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CH0012400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6386ba085c040a3e56aab7bbe7c82183eb44386e98c14955e53b72e0bd8151db. 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/CH0012400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c94fe97f150d7f675029e069d0c71428ec71ba7305f26ab86ba77dd8302dc9. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/CH0012400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3b076a3de8c9b4fd269859e1392d6ea64c029ba1dd0c499d54bb6386aadd1f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/CH0012400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e356cc460b62272dafbe7e15201e37c5f72d2605c01c06c4b9b2ec78369767. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/CH0012400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6386ba085c040a3e56aab7bbe7c82183eb44386e98c14955e53b72e0bd8151db. 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/CH0012400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3b076a3de8c9b4fd269859e1392d6ea64c029ba1dd0c499d54bb6386aadd1f. 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/CH0012400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c94fe97f150d7f675029e069d0c71428ec71ba7305f26ab86ba77dd8302dc9. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/CH0012400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0b23366f27427c0bd77e7bcd4e59102025c2e856d63fd2e1c875ceccebc100. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/CH0012500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372c1a794efc58dd4a5daa804b1a4a4d14324716ef5d7c89e99e875776faaa21. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CH0012500113.