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 0x446cd9b634833f4ba87183b3ced753a06b885bc9134a4d504016511f079b0982. 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/1aede0d5-0f6e-4206-8d84-892f3f2bce97.json and https://artists.proofprofile.net/proofs/artist/1aede0d5-0f6e-4206-8d84-892f3f2bce97.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 0x2564f727106a6420e034e741c856e76fcf78e665b40311886e8a37c6148cbeb6. 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/AUPT22000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fa750a0a7ecba4278e165e28ae63a7dc8f3bb51b122585987b6a845f20a199. 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/AUPT22000251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523eee1ab7359a87ca77e23ee61d748daad94352f3395c78108413f2ef3c9327. 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/AUPT22000256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab95a185f1e10b7f34ac6817730c812737924bb1cb9898feb092a442f4489e6d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:32:01Z), 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/AUPT22000259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cdbf7d906c1238d7993ea45d7a826e9a5ae998228a5be0ed2bd1bcf90a30c7. 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/AUPT22000262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fa04732f5fbc188fe0da5ce963dcf849e60237a569c5bf6614717dfe5fa9e2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/AUPT22000264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2b868bc984aab43af00b7d2a7f4804dc537951d45614216c7f92e39cd726af. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/AUPT22000270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7f0fed8c0489b652e1fa2bb9a2aef5555d03296fc3f54229031230ce8a6e0a. 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/AUPT22000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9df204436d1206d6de4b6e3d65bcf5922549f2ab642188f4ba581788a85908. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/AUPT22000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1e45ca177f42d22916eb71bfa7df0e977a84a30890ee525df993c23e164937. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUPT22000309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7c70731b83f540326df77268a47cb59b3639ac656412192abd64767cec5834. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUPT22000317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf172927e3af683a2b4e2fcfe7f39dc06bdf58fd3a4105422df5ee61fe88b75. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/AUPT22000321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2555c8d592376e3444e77fa293f7f612868ff99089f2cb4723b28220f80667d5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/AUPT22000329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3677cea8e7f51ab43e596ec7146ed2609c22bc98c2742a6ad7641f6b53a8996b. 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/AUPT22000330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9535d65eca45079f208afdf4e66799f854c52ea163d04abea1170f7fcb2cae. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:02:14Z), 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/AUPT22000332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd20e09b3f132d2d6ed501517de4480ca44cb86b36386995750f0e47135cdb24. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:18:43Z), 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/AUPT22000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa6c25aae0bf398c114fe565751991dca05c11346d41a7a2b3aa419a7bf18fe. 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/AUPT22100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc75497913c40773c905e76d8d0b5f896237ed89bb6b6b11a0d40cc77d0d74bc. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/AUPT22100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dfad616a739259ea52550e9e9668436d5d743f4d4b1b2e48bb026e9b7adbc1. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUPT22100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07579d8dd6f85f2fd3832482e73dd7be5e724e0d16a728ba1ba9d402539103c. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/AUPT22100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7444ce14dcf6cd31f7475f5aaf328cf994240b7f74d5d1374add87db6588b9a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:54:01Z), 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/AUPT22100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314578278d1efc97b9f4db0972e5d1d7d2f5615215e3b598761e6cd3523f44d0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:16Z), 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/AUPT22100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf228a94f63835b8e789c4d78b025008f741dfd440f2358a742af9ec09191e3. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/AUPT22100147.