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 0x29c07d0d3cd048113ab86d97a17eae665262db202389ba767ed7405f238de4c9. 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/d6fb569c-8d06-4702-8ae8-d19aba7934d4.json and https://artists.proofprofile.net/proofs/artist/d6fb569c-8d06-4702-8ae8-d19aba7934d4.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 0x81d9b2114f20f8d95427af20f91ad13b314b5cda8dfb07c89bd662bdb93cb844. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/US9CY1300482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe318f29d7dce61b4ab3aef61535b45f92d90641bb57bf9a57e38189fa2ccf1cb. 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/US9CY1300484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b5f478e3abbba4cd57f52d71e73773ebb2094813887b7ecd18d698777a1d13. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/US9CY1300487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa71d5f7b652400a6356041f60db8c527a0ea2c7db564870e4f677dd7980642. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/US9CY1300488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ab5313468ca2258671d83a1f3ce96d6151ee72370dd7c1d135a4e48f754a40. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US9CY1300490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc314f464c825bfc4870fe2428f5d2079a9198e66c502724d70a2dc3c57cd58. 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/USDHM1520377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7b343d7a5506010bd7d2943372c57121108f186e3bf8ae8007c93f104c685e. 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/USDHM1520381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ede22cb3c79eaf24c47cf3f1a15cc418e758b887cadfbfd931e9295eb2ed85e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USDHM1520382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e0c128b5f18ea49c44ed8bd060e03e22a844ab86fc913ba0aab33e71dd3062. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:50:07Z), 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/USDHM1520384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe110e495dff6f00c3ca65530818c557c00b2bfff53dad842d5aaac2690c683d6. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:46:47Z), 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/USDHM1616730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2420df589fe7c1dad1e26f2d7395c0fd247baf2caccacb836a2673043e7d25e8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USDHM1616732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18da9c19d9826c6d895428d32152731000de7ba29ebd4a861f7dea3e95adccc4. 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/USDHM1616738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ca3e0cb0558e472d360e5214915773d33efa445a92b740b0b13b7459b2a207. 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/USDHM1616644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efaa0f59995386a41ff50c4d62954a09dbef5cdc657b032a7ea837ce6c2fea8. 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/USDHM1616646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea01c6e910b51caa33a679cb127a55263d5f07d905a2d3127ebb06a257cdcdb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USDHM1616647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bbed7f069c32502bf9fbb1141b39b3fb4fa7d41e2189d8197fd064b6c3a9e3. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USDHM1616651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49aed547189b2f5dd4df64ac981105ae495f740988c64b58fc89d44a9780a1d6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:59Z), 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/USDHM1616653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7856c51721bc5d544bd5f19bbbb635f4704273837651b468be005151abe14da3. 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/USDHM1616654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5840239e1a5baf5dd04952009e662c4a5ba6f8588ccd85019d9d0ca3c7f9ca6. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/USDHM1616965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8af4162f0769d451674fe02fcd8cd09e9bfc9b18ca59baa51fb83e0f5a32c6a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:38:55Z), 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/USDHM1616967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aa60ff8b32f199b77b316f66cb08a050c913d670df67a31342701f2619e422. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:48Z), 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/USDHM1616968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac0c442c959cfe99f12dc59853e0351e9eee531b84cfc5d1cc58d667ccb93a0. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/USDHM1616969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec722f716f589806642ce6b48b911ee38f1daf5c7e59abfdc5e1b97497fa8cb7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:04:33Z), 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/USDHM1616970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fce96d59a73467428c56b33f1508301aee57e1c133d022fa8a399bafc04f5dc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:03:48Z), 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/USDHM1616973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621a59224c287f4527cf4ac8fc0aec1f4ad46ace43afbeed482f6607a672f0c4. 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/USDHM1616974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66db2a9f6538231715d8364b485799217733003f91221a0a69f24398ad0fbd8e. 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/USDHM1616975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7145cc73c692b5e687de48897668476365ced03e1a67387cd46227d08d967c46. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:36:44Z), 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/USDHM1616977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ae7bcd975e0539fd543075cc9ebbd6937e4c5b121727c57b249d15aefd59df. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USDHM1616979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3e802e9e70a24271c35130d950271561e7204fb4e48d3600e1b583dbce3411. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:34:52Z), 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/USDHM1617033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269f10401a8da4ec8e1135c2b3c54881b4e954ba4c744d8b83a0c5f54b770139. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:50:56Z), 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/USDHM1617040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423e5fccc666112a9caaed309da18a295dece575a77a1e6e78bac95ba18b3232. 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/USDHM1617043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc623beaf1d669adbb9583a9b3725ba1e6fb4aa219eb358509ce5bcd77cc041f. 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/USDHM1617044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775706a2a190116d025594bb58b13d14e010e09b8143cea0cf1a6aca3fae1914. 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/USDHM1617092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea3bcd88b806301e9ed1d590ec6e9e91da93114e3a4b50039b4a5024af2b85d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USDHM1617093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c0bf7f9295acc6b836f3bd8fccd971cea79eff90eda0357792ffc82c73917a. 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/USDHM1617094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee11c9b5a8f65a516049c3f8514005845752635eb8c387cc69aaa05607f299a0. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:24:28Z), 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/USDHM1617099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c27420822be68a6cc9abb22bc463d8b8429ebcd48c3490bfa0211969ca711c. 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/USDHM1617100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccfdc6ba87f38cc10b6c8c5cbfa28af6b285aeca7cf553acaa15fc3ac2efb8e. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/USDHM1617102.