1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa99910622fe135b2cbc53ac0257c0125e878ff79ca6b3b9ada1e89d443eba465. 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/bb184498-fef6-428e-b66f-c1d1fb78caeb.json and https://artists.proofprofile.net/proofs/artist/bb184498-fef6-428e-b66f-c1d1fb78caeb.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 → block OTSBitcoinBlock must exist at that height 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 0x66d2e1ca2841550746e06c2368fb11eca7ed3c42a3d9af609a7874e370025aad. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM21942742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5a1f4a01c618b80380ced16390dee2f5e2402e5eeb073927bfd56775164173. 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/USHM21942749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5a264023b842efec04884bc2e70803bc55b827fec94a34899049e5071fc8b3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USCGH1767706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234359f7a6acd05e408eebee7ff35a85898dac1836b03c2174d2d883e183fff9. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCGH1767707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de56b8f676ad6b080004c0ce6af69cb3b8188ac64d9dcf11112fbdf628d52e3. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USCGH1767710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacde07334fec30d97e0131f689b68b06aa53889776aaaaf1e03baaee348eddb1. 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/USCGH1767712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2db65dcb47de7efbe2db07daedf3742dd2ec3661b368dd4933af165868c0d4. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USDY41831823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb71dfed0f94df06dcba95d429015285251c0dfbdbff2c3aa38e1280ad1eb6b5. 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/USHM21927513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced451a31fa016c1bee9e85a2132898fdc091cfc7f9e0cbc02541344c621f76c. 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/USHM21927518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fe3b5d64a7bf53e491f7c32049eb4df368716f88a9993f23a2fca0d2c6bb94. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USL4Q1917003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae495997eac253418c5794d0ec2b136d50b3487d179adced4dbbb1a12663d33. 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/USCGH2000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea8653e0ff45e194b2c41c5e5a00d72ba878b12fe20b4493c16e0a609c26ef4. 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/USCGH2000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb262e7eb5d732212026d7b504f5ba46a50e690805d964dc857edcbabe5e4b1ef. 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/USHM82009302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b312a2827b56a9a3cb1cfa38b7dfd826f25329daa2c1fca2e4216dbe637fb48. 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/USHM82009303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd051857e4ecc45db7346eb0aa7a6265e29af66d8dd522f6ad1a1c90f15ec2fe1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM82009305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a4f87aed817ee77ede55ab322a89be70cf00400a575f96f9b9a1d58094c56e. 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/USHM82009306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f24340bd5bbdf71c12d72373b270a99970bf7ad2dea2546d765b1c0e856290a. 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/USHM82009307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17eca36387ea057be5c0813e096fa054195005e47a1aaa3357d4409a80cbb1fe. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/USHM82009310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c467d30a7fc824c32845ca93b330c374db160d495786ccd9c5b4c247fec433. 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/USL4R2169435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b80cbe2c79982fce147b7b26ba504649758f213eec0c07b28d2419e84c267c5. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USL4R2169437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2785e5641225e40c70a51213c8ef7af9cb891531601a5e60ccb65c4efd3c2a55. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USL4R2169440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34389a46d6776f86ce6d8e66a864dfa020e6574c77b7f0a4a840691cdecd3ce4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:06Z), 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/USL4R2169443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f5d70e1962d68da952f5d82ca8eb9c9fd48b2a66d60317408580817b5cf902. 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/USL4R2169445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43419f626a505bdf27ebaa72f3603a7aac80c993a4a7e3e7e9dd459ed69807d. 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/USHM82461073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb30740952d8441c3257b8bd0d502309612d6d185deaf3c2fd7179939b21acea. 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/USHM92417867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c71ccf8f48ab122216e97cc741a9b8f42b79eac6912c32842db6f130821a6e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USL4Q2472133.