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 0x4927633766581af162b7b4b4bb612620ee3ee31f2088ffbcfa72fb095df94a79. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc38d241-6701-4e97-833b-688939165abd.json and https://artists.proofprofile.net/proofs/artist/cc38d241-6701-4e97-833b-688939165abd.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c3c6626e1ed35b62d22fe050cd3e917abf8b837b88f4bf92cd24cd67bcad2d. 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/GBMA22505470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08ba795589bf07828ba9aee26551ffd3451d9954715998f1c6157cbeb45870e. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:02:56Z), 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/GBMA22505471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015a1ec087f177e8795205a2b57f3f96aed249a6b9f9f289bf482504fc701caa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBMA22505472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba60fc4816e133e67dbbb967f55dfcb1e98ed22bb3de9ed5c8123f9c15f9980. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:38:42Z), 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/GBMA22505473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57eb39a7303a982bc9e7f145fbace28c2375af8424ff9585e83e21408e2357b4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:41:28Z), 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/GBMA22505474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4cb73fe5fd74e10cfdce3b6789ecd57a658fd4b9edc9451f474d0c5a71643c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:56:38Z), 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/GBMA22505475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ac577708e0002100eac01bcfa0184115808fce5cfc524664e37dbc8bb9f24e. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:49Z), 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/GBMA22505476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102d56a6ff953067a8c6cfae0ce54752b5b7cb4713e6c1f96d168f0550869396. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/GBMA22505477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394b549b6ef93a8986e2ecd65a3d56a5eb9bb0aed084999f28d9bb2c101e5c48. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:37:31Z), 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/GBMA22505478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed358d2d7d1163ac560c9e45e1c70f07c251b96f452a6ca9e36abf725327bbad. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:49:31Z), 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/GBMA22505479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c30a5eafc997ff855dc882c10cc90b1cc49cecd352639b4c60478ff82576634. 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/GBMA22505480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c48762632b3ef6e1386535e5b9c949a04992fc4fc91f6a07bc92c72ccef065. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:56:50Z), 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/GBMA22505481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59c054bc4ade50ea6d867c09df987fbd9fdadd629687611eaf79d5aff96781f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:32:58Z), 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/GBMA22505482.