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 0x95dd12b751cb24d814f813c29dba9c7f89d4135718d9e9a96920eca75f7ba42c. 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/cd004074-6b1e-4a5d-9bf8-a09db5521aa7.json and https://artists.proofprofile.net/proofs/artist/cd004074-6b1e-4a5d-9bf8-a09db5521aa7.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 0x0a156ea18760bfd887eea30d2db88f1bc541cbe4f3731ad0fbd595f345dc412c. 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/US25L2300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb5320b5c067d34287bbd3253a1ab9c5ce9439e0cf8f5db69cd59a86f8d6034. 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/US25L2300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73314bfe69a09fa53b88fb7f8d4a71f48557bfa34b1a7d50e766812ee4cdd1d4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US25L2300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a519a1ac363d2fbacc30c8f3aa03b86d8dc28f7591dd22942b624645b4262a2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US25L2300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7896992a57eae4fadd7404753a1d97a5fef71b673f74075abe7e12085c178820. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US25L2300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec50df8cfa38dba120e326d01ceb03153b7db9be422b81ed998db2514a47deb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US25L2300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a156ea18760bfd887eea30d2db88f1bc541cbe4f3731ad0fbd595f345dc412c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US25L2300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e617b47f6f6f70fc60b6a02c825ec1727c9d2ad1caba27ab06afdcdf44d9f21. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US25L2300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da6c84e70dbd6e5841844cdac9a3e59fc284ae1c54e61b78e56b2d5b03cbfdc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US25L2300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe501c500828a4b16d00e8cdb2d1f14a513d1520c318d3733e9eeaef008f7db0a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US25L2300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb5320b5c067d34287bbd3253a1ab9c5ce9439e0cf8f5db69cd59a86f8d6034. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US25L2300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575f1a342160df645567cb7bddbf0c5400ffa7d4755c81cc13164030d3a8a673. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US25L2300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a0fcf71ca047f21aa9f67e816596df1750cdd8421bec1317ce3452219ff6a4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US25L2300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8a40fd4cbc1faaf8ebfd2501a944b12f0e9f845da765d61afb0b338a3e1f43. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US25L2300323.
Still Worship Imagination: Best of Volume One