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 0x0efbcba9e89eb96526f37734ac65bb42619822418ce6d8e0c62bc619e495c73c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61a5ca18-5f30-419d-9697-2ef51b33ff1c.json and https://artists.proofprofile.net/proofs/artist/61a5ca18-5f30-419d-9697-2ef51b33ff1c.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 0x9026fae0d5ac15d6d64f38de205c537caa79858a95a6a99133b8b7889ae0a199. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:33:10Z), 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/SE6XW2226816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e1a70f37137466ae211f6a1e63eef57a6c434ff76ada6395b7b933c6e4ce70. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6XW2226819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba4a760a569ab577d58ff006ece257c6ab866b84f039947af82d197dc90c2c0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SE6XX2272541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bface57ff994780d70d9f4c6d8078214ca232a8a3c657d68a0c36bef0db9a55. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/SE6XY2268369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e8509a78d07cc957a6411051a3c56b675e13fa83de5c4290bb16ed9c272691. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/SE6SA2223855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb364d9babdd5f3856abcfb0e436bfeb8b6f7cca56598054353d59fddb959127b. 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/SE6I32357037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56624d6c8d09849ef569dd513d88ba055afa0f471e40dc5fe92e3d3c52ff1727. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZPLS2375231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c083a6288dc51d7f1698d07f09a8cdfacf9131f30dc3fd3ca5f688f302a4f2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZPLS2375232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f76d13a845b0d7c4cf0deae72e6b3acc4d6470d401c4c218de3bd6dda07412. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZWFL2300729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b88a2dcc398f0697c763c1042dbd6c0a5756daa5cfc007a1dc03bcc2b9ad743. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZWFL2300731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fc33cfc8f1831f56b90c18ba18bf0e4679ac98816ae518ce0e2c72ffd7b5dd. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:27:23Z), 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/US3DF2428382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faf7744ad927aea2bf1ee28a46dcb4e86fe998527037847f0e85dbd30507dc4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTB22400244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02731bc90a484acd57741a9f7a377326cd8ab8f1111ed74bfb30466f62d90dea. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:30:44Z), 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/QZTB22400241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438f36685cc9001826fa3521b2a32407776e76f4820ddeb6c95bfbd621d063dd. 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/QZWFM2475073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00da653aaccb234b6568e36ea75c3433ec3096f09eae0b5aa2fb4d232e57a77f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFV2484583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec8fba396b53b1b1920449c69c051c20b6015cb0d3c9ac65acd33936d4d8682. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZES82580475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c45c5f260272a63d84b3f38668c450448e4069234b6f7051450fb741ed96863. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:02:20Z), 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/QT3FB2543916.