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 0x658bcd6594ac9cfcad637fea9bb2a7302b84c2215b0f5d408971ce2c90d53f2c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2841ca02-4af4-4ce8-be04-469e6da7f1eb.json and https://artists.proofprofile.net/proofs/artist/2841ca02-4af4-4ce8-be04-469e6da7f1eb.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 0xeffaa2470e6e2006aaea798d72038bad9f7d5133389dc57cf3e7264e4ba72adc. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:02:11Z), 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/QZVEM1860681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd578e0934dcb9cc20ed4dff6fb2145408b19d00e7cd0ee9df3963ee6b6c59c1. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZVEM1860683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd39d1b766e7bad8dd0d59ceb610f2fb75279f3d45366ac4488f0e0131308b6. 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/QZVEM1860684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54763f5c88c51051f7add4781d3926c3a36755050587c540259d2e13388ef876. 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/QZVEM1860685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474771ecd021e603318c1094dda66d94bfef96cec32016f8d1c853f706cd3481. 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/QZVEM1860690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb5b247e322a57f51f513764cfdc7ecd2a1c1c3ca82176ed741de1ea359e715. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ATBK71200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71131431200795d7513664b558f3fe33d62b77a0dab302c7726c1bd77f0bf04. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:20Z), 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/ATBK71200272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247aafdb99a1a748d8c27550eff3f2d5b2e48a5fd7c713ba36b796b17c64e2e8. 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/ATBK71200274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb1e2c09740edf3248d2a4da62af049d5a6557ac70fc8334ac67808c8704a82. 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/ATBK71200275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ac118b8f0901c54250c45d235c0c8d09c0211bfd03e8de13d3840925cbb923. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:07:28Z), 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/ATBK71200276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb6ab91e2e7209a6c118d6891b68d016914789d69d33b421e646deb6f2818f2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ATBK71200277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e70a4d995b39b7a7c489451b27d91ceac7219ef585ab173023e8d093e6747ad. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/ATBK71200279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ffe36642d51b7f2ae4a1a63d8ffc86c26b8644190f41b726067b2aa27464e9. 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/ATBK71200377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cc7346c7c4e5cb327bc77a1e4b38899d1d4e0f634dbaa6ad1238d2209ab95c. 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/ATBK71200378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871c340134887fb13340ab45d0cd750256357ed4a899977cfeec1a1618803cd0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ATBK71200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b60fbc4c959ced1bb5a44a9c66b6a7d9ded348d12b7459426160ca7ea05514d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ATBK71200381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11668566fdb359e42d674aa6411692935b5aa8839d2065ff956029816a53eea. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:04:25Z), 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/ATBK71200382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15c3ee82d846c225ee2fb094d0a7c46ab702c3248439a2cc25e52744b6bf754. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/ATBK71200383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7313dcfe8c691376a67428876650ad78cf4fb645097e53d58e4f2e511310c98d. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:58:53Z), 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/ATBK71200384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39830cc22084c97d18f02cc33268028be56a3eb06c0602e220ecc00f49e3ff35. 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/ATBK71200385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50c9868d3869488674f0023ed226437d26cc4b0b825d81b3c8088669aa98307. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ATBK71200386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32032743e463427125864e0987d7218d168226226ef756811c92ceb763ede4a. 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/ATBK71200387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0931b815177f9b55ec577245e8954a1475bb218a909883665985cfd2c69a7968. 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/ATBK71200388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8743627edd4b4f6c3f24d10ba49157d520836498cea5d4920910381a2354d463. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:59:11Z), 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/ATBK71200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eff5804373905cbebf9d0be0291aa96a721e2de56a712738361a230fc3a1960. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATBK71200768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497630b0b8bbe8e3b502986cbe9284f24e3544f8eb76e717719bce6e47b77c99. 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/ATBK71203921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bd17df3cb02b1fe29c4a89afe40624bc4798b5807dfcad62542626167ba9f9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:58Z), 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/ATBK71203922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665116b413fc8bf392f930c1c11b059c05e05b34568d3da1d4d551a8c5fcf732. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ATBK71203923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef9f4e49431fec3d84703652cda715361119c3b8d9c60330600e02fffc3c733. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ATBK71203924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9531ff3ec85b304dc030826084ae15aad02dc2eca1741a28b2cdee79eef68c34. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ATBK71203925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dd651a9e0804ba89a428309ebe9bf4d2dad561b99a97066ad8cec50ee6d981. 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/ATBK71203927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5c0ae517bc70cb0269b3465cf5244cca37fb383a679bb410013d80d1158358. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:38:31Z), 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/ATBK71204606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8548dbbab472c5093031268bc3e94275e1fd938bf36a90a6b68d9de6fd9175. 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/ATBK71204607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a1ae29f1a094ade2794baae26abe75959726dd8ba9e0e7f7d00f5b9c55d505. 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/ATBK71204608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e51c0a545d90dae30d20402baa3482c9b92c0c66a8e0c4d032f2653c0d77d34. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/ATBK71204609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f3810c004215f87746b94669d676c271a2854b6905940088d4d401b54e3455. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ATBK71204610.