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 0x7c403c5a6126d61d5716dcf10db12fbd908a1c65cad48cd48e4d8696f00aa3be. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18ffa6ee-777e-4d13-916b-e9e4ed35aeb6.json and https://artists.proofprofile.net/proofs/artist/18ffa6ee-777e-4d13-916b-e9e4ed35aeb6.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 0xdb9c298b8ccaf5ed94272cc323dcd267d3f8281e35196fe3dee141dfe09730fc. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USA4N1201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6299d32f73ff09aa7ebeade3aa8d778424f0cdc35eb35af8e8cb32fdafa24c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA4N1600507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335f895072abd1c6d0a7d7a3c17a62216df133a3a189274c18d770bca3cd0c57. 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/USA4N1301853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361a7f49d4c6c89903cba1c61e6ae4d308b4eb2b142fc7ca60eaefcca719e629. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA4N1301799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b8ab8bb3c57e842d9906d2203adab705d3274d37a7ba47a0ff6ea813cc7591. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA4N1301411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c163474588465e9f3ec0b475c4ac5d41bf8e12de6bd794ec036fb513e1befea. 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/USA4N1301413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2be3ae7e6ec809b412dcf3d5455af695f9eb66a3e19da6250beeb668271920. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA4N1301816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4464266efbe1be9a253ccb5e0d7e289a72665854ec15d9c5d0730c55e6fac90e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA4N1301884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf852be24da289f1de9a31c8d02e56ab546d7e8c6e9b2b5d43a74d841b7c4c717. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA4N1301894.
Psalm 103: The Lord Is Kind and Merciful
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37eb72a35dbe7000297cf15581f88db0c3850eacbbe4a08b4b5ab4eee9240b8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA4N1301078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ce868630b1fd2baabeae9a3545c1d99a144ca067e95235b5c7ce8bf86168dd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA4N1000356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8185ec073ed85688f808dc71da5614150a7d9e5c4c416371395738834a63d00d. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:59:49Z), 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/USA4N1301874.
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 0xfce13e8f05ab75f774be9d784db020aa0c5a0d59edebd1e43fced41a0502050c. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USA4N1303821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bd9fe461c81344e2bdcb226d5832c9a93ccc809a079a7e3d880431a98e4096. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/USA4N1303776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd506581d62fcce8bdfdb5c9f67c7248ce18b921be3c9ef9e65714a34a82e40. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USA4N1301707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796040c84ba8df0a2395f0640618d359b047d8afeea5c88d02d3ec8b24b41f86. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA4N1301576.
Psalm 51: Be Merciful, O Lord/Create a Clean Heart in Me/I Will Rise and Go to My Father
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5a845fb2dd529c4f03558da95b79a97161b696bb20046c2d36d21d9e47707a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USA4N1301052.