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 0x7ec25134e64edc6a7edfb9a8193e84a9c484af1b9d8aa50700db85d737f47400. 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/e32a8b4d-5c86-41cc-b6f0-2d254d03e298.json and https://artists.proofprofile.net/proofs/artist/e32a8b4d-5c86-41cc-b6f0-2d254d03e298.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 0xd7ac9e7393f52c3699e688dfb7d2677901c574c40eee4bcc36563feea22a0ede. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCJPQ2281092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276ada903ab78db47c9eed8a328923eeb024724765fa85143747fc8178dc4934. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:13:27Z), 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/TCJPS2283256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf50108a3a56ea25d9bf5aff3da9d36de2adcccca63009ef2dd8f4a61363036. 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/TCJPS2277591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4c1966885f076dbfb53b6c936557d7b06a9067ab58a18f7ee34eb5aafa6b57. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:08:17Z), 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/TCJPS2277603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981a23dd74bb36328c63604effa8c8f37310737455ab6925ac91761c8aa95979. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:36:53Z), 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/TCJPU2214652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5033251ce5b5028cce63012ccf534214b3a1f12571d5a005235643281e91b0ba. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:24:58Z), 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/TCJPB2472940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86df12acb378772b813f51cb8664c58ceebfebe098f7336508617cab8bc1265. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCJPB2472947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057766c6acd26ad1afdf09627ae9cdb611909188c7bb185e76f80a48264961c9. 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/TCJPB2472949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4eeb124b6e5725c521b5e08445d333545643a2749e0533861de7eaf0b7256c. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCJPB2472951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a9e33c5dd71351275a02838235c6fc48a119ff1e7f826ddbba3a73600f3895. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPB2472952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a64685371215770756df0db80681fa5db8fe12d48fa520403001e262326588. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/TCJPC2482868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42e3761a2069fc720d824afcd5a64870e698218d8691000d3689f5a4915079c. 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/TCJPE2536462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4808d1ac692078bcd850d2d2417731b0b837336026e6b134895f651f3b8a60ca. 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/TCJPF2582445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d1466c16e51a83f00388e21a0f1e420073d059238ff2719accb51859e1de43. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCJPF2582450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4715f6533df84184bcf6bb4d9dcdbd1bdef50789ac2414e101964ba20f5b1e. 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/TCJPF2582456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8185c4e61f24cd4d4b98741771a570da099a75ea83e7e3cb21aac7e1a12c6478. 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/TCJPG2554901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365cb32e3c9d6fb2033febbdab4f9f141758458627292f44fe55fffb54da9da8. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:10:51Z), 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/JPTF02517901.