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 0xbb784e408a975a33761a34e3e32efd85e43ae953b552e086e200ee84c20af732. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e335c01-29b4-4fd2-b471-df1cec3b8f73.json and https://artists.proofprofile.net/proofs/artist/5e335c01-29b4-4fd2-b471-df1cec3b8f73.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 0x5259cff9b4a88049344cad8e89eb7b43090363b5f1b3db97bbcdad4cba9d70a5. 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/BRVEA0100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1832cf64e5e2622097a7a8e9049ca94bf2397eeadaa83415c886b01632c6cc4. 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/BRVEA0100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe4316c741b3a4077a3aacce459960bc1f16658e697e4fe0001873d373e159c. 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/BRVEA0100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137bab276480934ff2cd08faabb295a6d47bc177c8a098b4cf17aeaa724edc47. 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/BRVEA0100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86adadbe55131bce77a3f87034d0167be9b6dd65a417849def6c9766f45c2319. 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/BRVEA0100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe733c9e53a7e7417933ea2dee5338e516a8d588eac98fdf05cd7d2ad253831. 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/BRVLS9200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562b6eacd28aa43ca13bf9cf33c1eef8bfda29206acd7ef9edf21d25c7c17a7c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRVLS9300637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190b8680dc98eb738a0c6188a354153c905abc306130dbc637b65a3e61293d29. 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/BRVLS9600522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe4316c741b3a4077a3aacce459960bc1f16658e697e4fe0001873d373e159c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRVEA0100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4d39314f4ee2c4ca18c8f0be60501b638db4ad4f1056af83ca30918641cc08. 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/US1ST1832001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9147b534b11595f879cc2de6739ab3084e7a5469b7473a3f5aecaf197e933a. 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/US1ST1832002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e6e89d6300edd773ef016505386d8e07b3eb1b1184f4dddb2513ecaff3bdd6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US1ST1832003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3af83343222d34f7db20c66616098a59a27284a674abcbb3e17b510ccb6ce1. 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/US1ST1832005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dccfd359e47378dd382843d7a921a51c0715f3a4fa7db346a3be582fe225e24. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US1ST1832006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dde2f0638254669f4f82c3901d8687b2cab446228cef82740eab20f0bb5f92. 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/US1ST1832011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d55d4c98dccb42e18600f4a027c7f2298c08151ce4f9446029a728500a01f4. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/US1ST1832004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d753b3f815e475314949dd84fb1c73f5d0779c19ab4bb96a1095144385fdbc2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US6LQ0900656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9686b5d1e17ecf3988974d7cc2d544716bbd4a6422c398a5416746232df0c653. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAR18600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a69c3123d7b88f93413404232eb663b60c2178b49ae3dd0d5a87b8804a02e1. 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/GBF076520020.
Drop It Like It's Hot (feat. Pharrell Williams)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14169bdfca0ae6d9a14ab1ae3362f5a45139f6964f23968ab2e0415c34806cb3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMC10400902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48abe675d40844540d67019eb6adbf4ead86d78abcc08b809ec895fbc393a3b3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US6LQ0900658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59032833cd2d51a62b404cc9205ba5c5acb469f72041b9fb20932004175e29d. 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/US6LQ0900659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798b89a60ca7ab176d230031c6d1c2049255639ed28b19e66fc15647367c8ad0. 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/USJAY0900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd179f6f7e95680909326834289646ab52536b1740ebeabbc399b7f117214db6e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USTB12100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08827e81ee8cbe9408a48cd35a53a89202334249f2f4da9222a77f27f2c32443. 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/USMO17000469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03d6ea3d90805d04bdc492dc2daf22b9984f9e17fad37538ede8e9508210aa9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US6LQ0900660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393dfca04ed13e3c01b53914725e40a4dfad20ce116f2754ed4d95c27a875e5f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/US6LQ0900661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aff359cdc822f82580e8f1a69c0c17a757fab06d772c02ca866807d0f229a1. 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/US6LQ0900663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517a7f23fbeff70717d791f836c7487218c5f206c18e1b7d047b31aa262ed320. 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/US6LQ0900664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eefdbc2cc9c6b199e54afb7f682d007730237e3853e49cd84d042073fa415df. 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/US6LQ0900665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021e818a45fd0541772983ade048b9ebf3fde79e6700595ee4d40c5dc559905b. 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/QMREU1784690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0f759d4afbf52a344c821a0a41a7538ef365859b5cab1e5281aa0a1ed99068. 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/QM4TW1537770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bb6ae88b643e73f2fe538035640afc7e96a14123788014b2e86ced1f0b6bd8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM4TW1537771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1277ac385280af4d252a9c8b9571f9afb810d2f2c01a3206ec326c394f9b43b0. 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/QM4TW1537774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f1311c57b2c2e75b2715147cafcd4d1137c7d37f01fc6b27fe5db0bc91bbd3. 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/QM4TW1537776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbee62ff21f82a10d7ab813a4d891d2f130d6015a551bfdbf940aac2ea59a719. 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/QM4TW1537777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0181896141fa9b9b3822d7899da87da96cc559ef082863a43ace46a67631b6. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QM4TW1537779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aad3cf39a4a49661fb089146ec3ce15f17d36963054dba63d907ecdc28f403f. 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/QMREU1410104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d656661c2ad7008f9a9aab987fe1e3d9a2d159516f11100e36da0d7beb48b88. 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/QMREU1410105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3aa93d7b61d77d2c3dad403d0af0dd706ca92742c085ce6263583a45229da0. 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/QMREU1410110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33b9a46359834d2d5ca27f68f66f34d8beaaaab7b71b5445ba46e821d208582. 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/QMREU1410111.