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 0x40896a65beddb660b3808e8a1462bca0af097da41599379f1f0fb1a3f76d6cda. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/daa7401e-160e-4c07-9cb8-3303c521087a.json and https://artists.proofprofile.net/proofs/artist/daa7401e-160e-4c07-9cb8-3303c521087a.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 0xe87e428dcc9d5bf9fed23b634dc9d421be5157874b4a7dff1145516847e51635. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:17Z), 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/GBSMU3442039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ed1d6492d8c8e15e714ced7441a6a2c038cdc1f1a95d140419107808fffe3b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GBSMU2681051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cb8fa842d0021135f4e7a7b8f4bc7bc7719cef0116953beeee10e0305f31d6. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:20:09Z), 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/GBSMU2478126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef975a1613d9a358dc662cd3d1f974d47cd1b395c06d07c5091fca797e21b64. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:45:09Z), 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/GBSMU2668079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b3cceefb7a7f9f60ede29233dec6519a1ded10e44dfbc86edaa27cc8bbe947. 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/GBSMU3509747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebe29b48bac41acb811dc2ccc86dcbb44c6dea5318d3f23b4302bddf4c5dce5. 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/GBSMU2668159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c540f60f4fc27ae6fbbcac5435a6a0826f89e4bb4e70675252dd02f190c54e. 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/GBSMU2694364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468c88ccce77b8961b791ee80837d01417e24cb85effe166df2bef00d5092c62. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/GBSMU2668122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622fa088195c137436922d0df70bd581afc270595accc348f7db7095585527af. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBSMU3241355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ce8815dbacd41f69480d3c417f968691834c99662340b9b3b432b9cc4ccd26. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBSMU3511718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95d353181f2f1abc3c7270c1f96592c53f89f7cb799cea736642038e13ce99d. 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/GBSMU2668141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac818694c242274538d1d0f585cd55b7e5b9802ecad646e03e88e1b3092321c. 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/QMPKX1765889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8ea4842a8e51396a890bc21c6777b45098646e3a61736098678bdd7125c6df. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZ8LD1797941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dd11d3a84eef4848d2af89d9be6ae90cb1c0dfc148dab01c4c917653776f8d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZARB1848297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a1f7a03ad9bc5cb556105e13fd1fadf650dbca1b9fe16fa4b1879a31d715c7. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:31:12Z), 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/QZDA61831320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77a5dde8a4b83f0af5843925a51b8219901db4d3953b4deb464835229686cef. 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/UST8K1839249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43b2993faa641792e448e9b14b2b12767226149bac2f2c738b40bc8d74780d1. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZES61891564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b7d5056d54bb9e61e624f6a8d34439fb3b6d74b44dc8a7cca9b451b86d2a35. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA51983359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1816a2d06ac5fda7a0e7c16980ba95963b2cdb25c19b89d98b5464d8d3945ae7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:56:20Z), 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/QZFZ32045936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87e09b3849707ef2a0ce3b7896fc13a2a719e534cdab87c6d03d76fe67606a2. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:48:52Z), 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/QZHN52146672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c65075252ad28d4a9381d238d032c3abe61e4d72544dfdc0aba98842b60fc35. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZK6F2101832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed09d3f0fbda31d7e030657e19c4ad56481e86395ccdd6540ba8dc11fabe11d5. 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/QZFZ22254148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11910300b92bc4693f814d05b86f5ddf4210127031c841aa9c3f4b6a860979e. 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/QZHN72259987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde7c0d47b2a53b9e3909d6d0bcd89f209b0889e1a0a48835530e996a922bc4b. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZNWV2213169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66dea8453c92571f9881f76ef4f82d5d4fa1e41e0ed49a055387abdbd184ab2. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZTB52202687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303bdf69a13c1e00894edc2e4c1eb783c9fd2567d9aeb397f4b6e8e93ceb355a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA82306281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d02d6243da1126930680b5fa22c782bb382080ece61848a685471c81e861d91. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZK6H2331732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae024c5ead996b78e7c8154f0cf10f1f0d81ac49fa46b13d0b456d6ad051315. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTAZ2310479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a10a8300c1312b9a16cfe56de556677a2703bc2ccc503ff9c381e9d0ac6054. 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/QZTB82313324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6824b30b804ef7ce80da50c8ab7d8b8b83528d80023df5c9e11e6883b5e32c78. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHN92453663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d29885d6a60b0f22ea85d16b6adc0c689e1243f4529e666f1257a8969689344. 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/QZWFR2413414.