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 0x4f6cbf1c78ffb4a1e2a9246e6ad2b8c8dbf94f3317c44da0e9146c60e3a2c565. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c148f869-7888-4a19-a41e-c530eb6de016.json and https://artists.proofprofile.net/proofs/artist/c148f869-7888-4a19-a41e-c530eb6de016.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 0xa7bb18dee5a8c00cb8f987c48c8389eb1f7a6729c006125aaa2f0d3e7449d396. 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/USHM81955132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6269a94967bc0ad5f691c3d9b80e4eb7efeb7638c014b1cd0817ce2fa11a68c3. 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/USHM81955134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31b597f9a706e91ea934a9979e832930a8396729dc46a243a185fb8b70db74b. 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/USHM81955135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056c1cd3e91d61affd41311738812a3355b0e765fe98a1ae71e7f377ca8e3482. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USHM81955137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4fefbab65d52dd4caebf5420e5e5447f5847aef5699bae9d3d33f18a06feee. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USCGH2155655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbb581ce974ed92edf4da7ab70266f66255281987a3512a0d684fc10f20e52b. 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/USDY42265088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49dab114051aa6903150a107af4cfdd86a0f4f86e0566e25f2b592a018ecab73. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:22:07Z), 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/USDY42265089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06c171993c203d74ea4f3190a62210cb30b7bf85e0e40a4d2730701bc16f949. 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/USDY42265090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b51a4b780ab5f8f9db1af7f509399ff0685cd10b92ca71e53df65975fed30c2. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USDY42265095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1904e4015fc129bddc6b536490f865a75e373a49e4b5ec738f5b385638f415fb. 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/USDY42265096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0724e5eaf2ed5bddc124a3f309cb16e15f089271f06f6ef2525acb295ac619d9. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USDY42265097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289f234f677907003147e0e0926dae0d434f49469318dee5a65a3258f2d3057d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USDY42265099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e80fb459e03f8cbf395a45cbcd7f45f5b161b114fd2611f1a85e3b581ca51e. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:29Z), 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/USX9P2463467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17decfc53daa2ed941b73535be11f2adb160701b581a76114a898b1c849f956. 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/USX9P2463468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0efd2a0b265d374afaad5ce6175457807074bfcf22fdf91e882bd11d56d603. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:49:06Z), 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/USX9P2463469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d749a8bd9a4dd216e6aec407d04b75305243d879e5306a82084ccb1e3be405. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:03:21Z), 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/USX9P2463470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2b54f9d1299358f96c16efeaece20cd490fdcfdb7189cca7d42a86f9a84360. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USX9P2463471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb085f0776ce70715798bc7e8ce6b20b03fb8d5a18378cf9de66017a461dc011a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USX9P2463472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf31cbded831379e9e9e704adc1b1077eafc9fb2f0c160c1b765fad17b7dcd4c. 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/USX9P2463473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619be7d653d6b469158b8e513a8fea13b6fbc1f69c52cfdf143b75a6745b034c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:10:19Z), 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/USX9P2463474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39d8bc062ff3a6a0676487768d44c1ad09bf566a669fddc40fc1c41ecf54fa6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USX9P2463475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cc3b3db0058c835ac10ef76658bcf46114648414ec2bf99d5fe23b226423ac. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/USHM82505067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3f098e67ab6ce023280d789f659f38334485af4e96451477c483c9a7c21595. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:34:20Z), 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/USHM82505068.