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 0xb8cc699d6c1c075d5f6250fa6486ebbd9b59e0b4fc8b11acd7a42cbc67284dca. 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/0563bd47-11d5-4bc6-918f-582d496bd8f9.json and https://artists.proofprofile.net/proofs/artist/0563bd47-11d5-4bc6-918f-582d496bd8f9.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 0x13757e81d26ec366fd89cde0f4b9b85c86d9ff7d0543ff9ba52737dcf28660e2. 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/GBP4E1700279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dc4c1714d9a37b5d8c62722af7120afe643fb1b08dca5f04fdcbe2f08ed805. 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/GBP4E1700280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029cef8afa82ad1e9dead1661b802e569fa2e79a791a0d5991ac119a724c578e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBP4E1700281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249cefefa36259afa5b851ec05c073ef6082c54cca92eb837ef4b08ccf7bc2e2. 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/GBP4E1700282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e83b5680e650fef70098293e509385715212e77d186fe26458565dbb61f3cea. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBP4E1700285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c5cf776bf38b414c5f7d0627390b6bfd199d66b3a8ddf94e22bb312355d499. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBP4E1700289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a7ec2ed0b2b7483e0c0a5875b662a3694ec993ac96328c4ca1f9e7e5ca5159. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBP4E1700300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b27dd5770fa8889749ca4f96040bafe0ddf51432354cfb7833bb3fd64330105. 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/GBP4E1700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0aca84f715a595bc524ee3e2677cd606b59b1f016b3a9d3d1001d204311deb2. 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/GBP4E1700302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ecaf7d6a14a11928fc8b44e1543410f74c1da92e27dd7a7c1a004f989fafe5. 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/GBP4E1700303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77a18ea7b3d9cdbb69edfe0a64d661b0c0267c97ed5d647b3dff1616563f24a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:43:30Z), 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/GBP4E1700320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4c3561c8df7c45d43057913330d03cd5cf4ebb00b2760bf6fc8aa00b151ed1. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:35:31Z), 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/GBP4E1700325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf083d9535d8256e4a44c9278b87f6951db81a4ef2c3efb7a51bb6ff479e05c45. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBP4E1700335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593375f573cc3a3c4f7fee79f95ac6c0d1e5a3139c343f8103af726c9d876200. 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/QZFZ32099748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6822ff45f23cbc12673a06c4eebe99b8ee8299ecaa2e7ebfe54054097b0aca. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFZ32099751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a71a2074df17cafa54b8d005e89f8ff3cf1883bca6ea96beee66967615019f7. 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/QZES82030522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059b2c57f215ed4a29397c8e68d30a504bce2d7241ea05d930ef004cd632c919. 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/QZMEQ2106025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3236424a4a330d398e1269ca2a045d59902995db56a1bc97349eaf15e3447f27. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:10:44Z), 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/QZS642229348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1387d0670390e034e544468946e8c59b3e8fb9affb73bcc4218a5c3d968653. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZMHL2235398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57c095c6ffbc476b758a7f0b70c42ebcb52a650f5472c011110f8ebde9d0708. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:26Z), 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/QZFYX2344140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b1917b62d72dd03eb26e869c2de93f2454d2ef3394fb1831f91df2578b25db. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZPLS2391311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa6c757e966eb2ac2dcc316ad310f82730d35ebdcabb3635c9e16428412afb5. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/QZMEN2361303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45378b41b93f75bb76e5f29ee8cfff9e8d4e673e5e6f06cb6b693e7d245d0758. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZTAT2309539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534060d1db9be3b2c64f4d52a7764c9e4e4921d1a2a56aff0491002c821ce610. 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/QZTBF2371797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d8b0e405a1a4888b266ebc0e3b8b1a8ea876ef77b81baf93d24d33f29698bd. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZTBF2385445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d949c893adf0031379b5ec66d93e7106d3ef7deb8b5123c6cf7f02259c84b3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFZ72443308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b8cc3216c7c1274196058c58769e11ceee74c1f1711ff711b301f38134979b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GX3Q92436689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e0a70603a68fe7bd6dd4824e37b41ea63464a739fb7c36f617304182e90f45. 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/QZNWQ2487523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22771e483f10f6c57bed37dd942dd17d044c412dd6429dea55de1f662957a5fa. 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/QZRP42407147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567489e6deac513cbbdcc53fc6a46483758a1d26d3677ba0bf9abe147f268482. 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/QZTAX2479858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fca1a96eaa42ce3fbab5e281fd596247cfebfef642d27e9795dd645418e8a1. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZTB52487232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd68bf7f59fea60c686158d3ca953dd3e465a22fef62a708b0c5d9af13ee6c95. 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/QZTBD2496900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa595722962fa161c9b589ab1570263deae3e41dcda2f9efb5b8f75fef8efd3a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTBD2496901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0f9aac430b759edc3be57a7368476273532652fc86f0fd30915727e14a97f4. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZWFT2458322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c6a34efd1168c87bb18651691e1f7c2ccd694112e7ecb6ad103e88c84213e3. 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/QZZ762453550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27715063be2832cad7b08950a5b5d2f1ce0b36b668f6a75206f335c42916f78a. 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/QZZ7N2481068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5dcc94bb49733f7ad61e121b5d33ac3c1603dec2fba1b8bd786cfe9b3fc7df. 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/UKXN22418629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72c388f677f8fa157239f8b29519473f539b30b3fe00f8979693b751ececf7d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZ5FN2133531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd536ac42a2ff50f2b998f6dd5cc7ab79c36443aa2042f5e9cdbea1ea6b0fb3f9. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBP4E1700377.