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 0x6fb8d47451fc10ebe7f283f0e31f5f7e0f04b56ef4ebd0c02a98073911572a5d. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86e38eed-9eb9-42f3-ba0d-6f558f775ae7.json and https://artists.proofprofile.net/proofs/artist/86e38eed-9eb9-42f3-ba0d-6f558f775ae7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xa22982418d4c142c73b195d3925c927b4be263e60c9fedffe521fb553502571f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCJA0606204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe976f56f67299d8150a3bd1d928801963c4cd7d469c8b49a1d7e215f2e0b1544. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCJA0601164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9b4342d09701af25b73ad1973dc0254f3378a286c26a91ef6684a6f5669532. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCJA0602112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c58e00f205914a2a75c5102395f6726fcaa2e631e1078e81c69ab09c62b0739. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USCJA0609192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99621b1982536f15ff2f63d9cd021c9445a8a9f9cfd3dc415cb0b4cf1b7911dd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USCJA0615342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80247f6f586b05762faf49ec2e4f77398064066eac69703c0e69811e41b6bae. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USCJA0612005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c30ddf19311d87630257821765b2d675f8d3472137c2c41875a14ac2058c0c. 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/USCJA0609196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fae93a4e0d6f4f49ac5178269ea8cdc1248368906f677858771bd108ae58e1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USCJA0611343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ec1fc52888e9289687c3718803c0c7048f4a37138f05ecf59d563cf761a96e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCJA0601158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac750d549243cc89295ff952933acb645c1d194fc73d44691f247cb51625436e. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USCJA0601959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dd937882b25698696d9acf301d457b2b5a0d98177eb4330cff02a1b924a50a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCJA0602234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc2df96da73a879e9ee7f36a8593c3fb4db4352cb758bd2a5b5043060b7e082. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USCJA0611063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c3e5e634057c748c349bff8d2fd43b0e60b82963123f7677a5b9ddfec17765. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCJA0601491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63854032b71ee93ad59e1d0286884c7910b4717cb1d1f8d7faa5bfc5271d22cb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCJA0605703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3d9baca8fb646564fd44f3333007f275ad0c2c2b922bcdcbbd3a8128094884. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCJA0609195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d6aefb079208cfd0a614e95e05115a7ea982201d1c4a1f22c641edec3a295d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCJA0613678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542e1ec5bcbd376bf3424c0496347426760dd41211a8beb19a7c5a96a070e5b1. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USCJA0612014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caffbb93bddad7dbd6b2d2ac8da8eb9c523c09eb55502f710773da0b2fb9f5a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USCJA0611345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c514e16980212799b3d8495b825a486ea37c77505d916a64320bf65eb1e2f5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCJA0601492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73227f9b41c48e426f91ab175b4b7b51df1262f08bdec545f47b5b20484e9e07. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCJA0609193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a95a9a499335bfe63fecc541fd13970d28424aa647a53ed3df9a8aca125337. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCJA0601494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171e05c79cde2a8ceb51793ad0ec2aa6fdb2a598aff8057fc9a7a4279c70a44f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCJA0601490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ded3da61fc6a011ad4487d24f4bfd046c2371eef815fc5fbe95fef9cad41b98. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCJA0609191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff6fbee087966325d4a4e843ed002eeb421434751341521b056e9310a7b1efb. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USCJA0612007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea00717c836f6e1d7cd733116c9e31d9a9957812ecb82b5a1127ac335b6f77b3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCJA0612012.