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 0x59ba660ce29279f79b8607f55f07fcbd8a8459f46b9fb82280f973d0e76a06a1. 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/0f48e662-e580-4979-ab78-8dc6c36a5f28.json and https://artists.proofprofile.net/proofs/artist/0f48e662-e580-4979-ab78-8dc6c36a5f28.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 0xad466c68376fe538f314ce7d23136fa4adb15447e34a1a20e0590b301f844c24. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:54:54Z), 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/QZNWU2084231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73d99ee34f3939fc475f03099d17e6321cdeef21de29e6ea206bd16ebda9615. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZNWU2084233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f627df069a43d7b2e6287ec4d66f95d8cbbf5aa377a05f334e0fcc606288045. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZNWU2084235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b780b4f3b6a6985d85613e36c7a13bfecd0ad98393da56c645501ce8cb15d7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZNWU2084236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f002fae040774b4a110012bd0a5e401ed56ed528fd12872398d0f4776c36351. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZNWU2084237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9219b7065a7a2693beef8b798001fefe5db08ee862ff1be69e683c31e2f42297. 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/UST8K1804804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb680150b619f0a4eedd188bfd8f054e9bfffc2b92cd8a177da4d220551180d6d. 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/UST8K1804805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0098d3699bc5931c399d9fefcc8c29b8f696f747e9322f0d3b9773ba99720d. 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/UST8K1804806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2807971dd910ca6f248196882e625f8bed5aae22d9a9c694e325867de0aaf22f. 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/UST8K1804809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961d7f12d1f4ca6abcfc3161c4ae1ab7e7e53de8c087ab3faed13dda3ba136af. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/UST8K1804810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4625978fdd71cdaa80b527bba9ba2dd7877f712df369b0b8670950a70d9ebb9c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:32:51Z), 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/UST8K1804812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b04273bc1f49e85c9a4b0635579ba366c06c05be7981c77c69e9e240064f56. 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/UST8K1804813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859b95383459f3ce78d9aad537baf668282f2824d3e0dc1459fbfc23816af987. 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/QMPKX1805694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770526bf32159036694496d8d1999a956a75d525b7eb9f137f22b26e0a5de5a0. 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/QMPKX1805697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6b88a7569329a1219b9b07d7b0b795c748dbc9190b5f4cec27feeb336db185. 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/QMPKX1805699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23944099b575696bb899a211428f6008a65a760a3acd1e01875e735cf20a50e4. 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/QMPKX1805700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06d426146e1d72f7760bb88a624b3cac644e812cadbb711bc7ecf56943c46c3. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QMPKX1807759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3b709b249f943bf94aae77732507a948093888c5cd2b4e09c4f26d3b586a73. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:15:57Z), 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/QMPKX1807762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0398494a01f0adba8da716757e42b8e6668a7135ec401b3265685abbd8335ff1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZFZ52167709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d558038e1f0877c9f67201987182d490766cc537a71196d7ab1c4dee6f45a8. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZFZ52167710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fac1c09ad655e7be5433e0b173d729863552231779f6f68865412b69d74565. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZDA42117636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd47060015f2a5263927b7e00f9439a540bb23970ffc0c8a6a9dba963805728b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZDA42117637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69e60f9828df707c5035ed8cebe0424f517b3e6c30342ed06dc2475c5cb6892. 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/QZDA42117638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb41b56cbda8d82a1573bd747437e741be9404b9e26f3a847431c3646b13b78d. 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/QZDA42117640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454a74ae7cafb38cb6e327d78f8450c365ec47f04850e94b2ba005076d869cee. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZDA42117641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186f5264edc4c3c32e9c7377f85273a703f1152689cd4f61128a66e81d115b69. 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/QZDA62163543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad21347b2b00a358a5eeb9a03260fde7af5c063f0fdd2bf4a285ec2db435affc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:04:53Z), 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/QZNWU2085500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb05b1381701ffdb514ac2a67928ddf7a2e4988aa1008724b80f23efb418981. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN52115802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c43c4efee46fb6627aeed32929ad314b27c658564d39d584740e27ff28b26bb. 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/QZHNA2140114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460e5b34b1ede39fb6f11e0c371ae43e97ed45d5a805a4dba78ae261f92234be. 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/QZHNA2140109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd876ce77c55343beb4ca00c59ca99451a9effc7c296c01522b6abeb9c15c941e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZDA72163814.