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 0xd8fedc8406a27abca9a768cb7bcfd15b1d6eb2a68f74fcf9fe15822653258fef. 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/be0b77b6-5ee5-40a8-bc64-33867c919201.json and https://artists.proofprofile.net/proofs/artist/be0b77b6-5ee5-40a8-bc64-33867c919201.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 0x1fba7d300014a9f1af5dce7a90fb255b57e33362716814ffeefe2ee866dec9f2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:42Z), 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/GX8KD2298820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e8d85c350cbf8d8ad3f8361b98f85ac1486513dc6c01adf4f389bab972d1c1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:11:02Z), 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/GX8KD2325559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111c4a2db53290712e524b54f8c2c903a3bac32b2e8084032856837fb1cc8385. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:40:03Z), 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/GX8KD2336071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a5946cbf8f600bdd68dc7218c76989388da6b2083529b9b5e99757a7025d23. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:54:07Z), 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/GX8KD2329802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e6b8fd433342b7c9454670015366a1be3f5b6413bdda98c20975f08618da70. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:08:23Z), 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/QZNWR2376257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de78a1c71a33079dc46e6e74567461e9a4e863105bfea87eff8b27fe48cf1d2. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZTBB2324038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34297632aeb966503abbc03011b28984ad74c75f3c9125e9b166849d732df805. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFYY2455691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c85a936ae22a36d91981c20ecd107857e64b7864a289818cc580ab5907dd16b. 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/QZDA62418064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a16a1980a47fba1837d3ea1452c72742626fdb7ec29cf02a5788b0c44cbcd0d. 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/QZHN52473647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb109cec015deca42862994ba6b9ceece42bafa89ec457584c12e5b4f79e20634. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZHN82456073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa876781d03df012898709f0977a04c84d7ccce6d681b120bc7d2d552c98aa15a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:37:00Z), 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/QZTB42474917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0067834be430b2246f71135a43b576e304c6b6f5dc92bfac12340e363560b6fb. 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/QZTBC2482971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6569ade8114672a59c5c7b62cd09e135cabdd0244277d5c3945c2c0aba3d753. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZWFM2411799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65eb2b5470a33bafb0377f3cb7a5f54d291e450a62632d033f8bc896e4d1c6d5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZWFT2490981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8b5c2e16f0eb575e1fb34a9d433afa6e0d778550cd7d0b1c400e8b8e5d896c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:08Z), 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/QZZ762437185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd247f42bda2fa82ee3b94428782603393c07547c24998c5f77c953491a7fc2fe. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZZ7V2430841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5677cf7b650f0314a7741fb3115a6375f88ea4d830330dc57f4a2d9715b6f63a. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZZ7X2473022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7afda76b55e3215cc53223002ab3e5598810e8c3d4536eefff2af29e9010323. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFZ32596158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f31a8739fc706c44d3190f189e9c33258134df5cdb46f15b349ce7d5ab4280. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZES72580794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e986d2f34c289c17642614f7b469f4da0ac0a1eba51a5b8d1b418bd1d2772d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6Q2530776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141cf6970c8525d70190c8e7f78991aa76a1aa491b2e53020f4936adfdad1a4f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZTB42518766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468e4cb85c2813ff4e6987266ec9432809030e7201cf44bea8ca3e940152f49c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFE2539987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83ec9d57ad9728f620ca63be14c710553497136ee54edf5ab734a7b29b24789. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFM2543876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f4a58ac1af307c8ee88b153d31a7acce43043467abbbef3d2794dba0623955. 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/QT3EZ2586789.