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 0x5bce7c72afd01c27373f110a983a8702db7cbb6cf7388dcfe345659cc8a6a7af. 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/3169360b-3c68-4583-bf5f-1df595d07595.json and https://artists.proofprofile.net/proofs/artist/3169360b-3c68-4583-bf5f-1df595d07595.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 0x779aacb0438f9301ebc4b0527be2af29a53613fbb7310b33606e4889e4920d74. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/ITZ041800156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd44336b10e947745cb36beab65f9c6684f41fcf54461f00ca33010acdab734. 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/ITSE71900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00ef31f0714a9fc551ddf1b3385e53c9a3d777478c7deb34db51baba19c0458. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ITB002000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bac63d1f424da581b8a677104b62272e76ca5c708ea1afac21ef699261d954. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ITB002100361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdf6693ea7804afeacceeb8038897db2dca426a4995b2faa9136013cf71352b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:18:54Z), 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/ITB002101068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1264a02c4df635276d1a1d708d5e5d4cdfe0d8664326eea01b578e30a9f0e582. 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/ITB002101425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f05719ca66a2b72fab2084d0a9e3f1d20b33c81369f99f2a6cda02fc01245f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITB002101427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8698a4dabc55ba61aaafc150b913a91826335faca30d9bdf2731bdbbeef94b1f. 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/ITB002101428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bac63d1f424da581b8a677104b62272e76ca5c708ea1afac21ef699261d954. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:28:42Z), 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/ITB002100361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdf6693ea7804afeacceeb8038897db2dca426a4995b2faa9136013cf71352b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:54:47Z), 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/ITB002101068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d39b9bd68b308b68f8b156b373b5d7b1d8077020b87310da86614b36c26da21. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/ITB002000357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8570b90d6f9d522868c9786510be51ddb52c8b169b9e1163148990f1546ba549. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ITSE72200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201ba786d11f6153b24282bfb445f1ad9e8f37b13df575c0fbcc9f18ea2cd8da. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ITSE72300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fca4f6951347d291adc48a6c452ed60814b0b0da84c38af63a826e64a6dbfcd. 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/ITSE72300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb29f6110bd1860208b253ebfbb3c47f506a7af8f3e1ef6abb8d7f957a8672bc. 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/ITSE72300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9c2ff6c425d01e7781423123ddc5bef4d5cf6f35bcaa473b3f3277d236e69d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITSE72300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fca4f6951347d291adc48a6c452ed60814b0b0da84c38af63a826e64a6dbfcd. 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/ITSE72300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8570b90d6f9d522868c9786510be51ddb52c8b169b9e1163148990f1546ba549. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ITSE72200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ee6465459563cb4eab920d08e7e16378c569db815c5b640fc9df44fd0a596c. 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/ITSE72300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201ba786d11f6153b24282bfb445f1ad9e8f37b13df575c0fbcc9f18ea2cd8da. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:11Z), 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/ITSE72300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7521b011dee00a6a4fb8eb10401b9246f772cc248eed363a96578091bc38a2c. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:22:32Z), 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/ITSE72300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91703ebfb7cc2e0fab0325a5f7f8ec653e29735114c0ae0187a3e61f2fd3ffa4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITSE72400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c5cac9097a5289fd5daa25ca6130c1a7b1d110475913c6104f7e0b2e4dd44a. 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/ITSE72400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ab8b7888cf98facf85959fcee8b5eb1e95fb0593e06b88da6285e3f60c4c27. 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/ITSE72400001.