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 0xef67353fc9b424527a52da06b53ff95f90f4c811a5456d3c18f838aa762b3248. 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/36edc4cc-5f81-4bf2-917e-4fd393d336a9.json and https://artists.proofprofile.net/proofs/artist/36edc4cc-5f81-4bf2-917e-4fd393d336a9.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 0xed6c8c5b5eb4319526f81094d5c374511220ae5994b82febae2f93c41306dbf7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PLA559100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f136862d1c3322c385e40ec21e48bcc9bb495c37fcbaffaa3b8787f6d9872e. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/PLA559100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bc37494b2a6cf27c98daa8d1a39f34d2323166a9a545fee6b92c4fe78a2258. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLA559100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd7b75efef5d4f4b7e4fa30b5c673dc9b9c6777df89e1454539937ed4130397. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PLA559100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6202564df332301bed50089a43731786c77a68763b3790c4d008c13a890cad3c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:10:47Z), 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/PLA559100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8a9b43ae185dd499878449c739375d6e343993e448b381e98fb19544b0fcb6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:48:51Z), 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/PLA559100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f3631ba8072f5b68a73c4f6eaeaa669231367bce6dc8b7743fc20abe5490e5. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:24:31Z), 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/PLA559100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b17242c206e59c32426f95f9e2b955b4c0da747b13de0c627ad0f6e3f6d07f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/PLA559100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecc4cdb1d09f6e4ab7bd952d445bf84ebc53181cb3f1ea6e5467fb0724c0aec. 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/PLA558300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ff1c1ae74f1e0c7efd2f8ec0e5dcfc1d91dc0298a1f60d69307d40af4f558f. 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/PLA558300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2272ad2d0cb05586c18596abd07f9b331ec1ca629fa6595ba365eef9c63bf6. 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/PLA558300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b8949bc54cca496512fb02ac96c6106bcd2d08059fe5dfb65243d35e012e22. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/PLA558300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1193b6b0c1497bb251eb03167ef274daa67feb1010144d62ef68115547f630e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLA558300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628e76f32f81c38b717a82b447acb8a54407a556e79c50cfb94237d8763ddebe. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PLA558300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af90e970caecbe5949f6ea004cefc819f700463074dba9655a7c388c8c8dd0b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PLA558300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6483b177d761da290253b8f75426954d3ab436958d81a100b72e0808784a11fa. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/PLA558300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553cfb3b8a6ce11ed659689e0c18c1862e7d226c3b0e034998862e54c7181049. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLA558300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf992adda8be42a05beb7d1779c2edd1c1beefffb8df338b4cd0add577e8e5a6f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PLA558300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fba9d1e93cbeebd9606c4d6028251a5bb7debdbef57062e16d90e05d2d28a0. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:28:58Z), 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/PLA558300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39585ab824fca54ddf51463f6f28ce479bdea5cf6736b45d03af348a272799d3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PLA558300052.