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 0x7e9267d0df5389339f9ca8d7fb358d4bc5327ec5d2e8e08890501d4842b7ff67. 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/3076d34c-a50c-4f15-a6d9-62d2e9287b51.json and https://artists.proofprofile.net/proofs/artist/3076d34c-a50c-4f15-a6d9-62d2e9287b51.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 0x5cdea2980fdaa4257e23ab4a7b66125ce94250dc28f4347811211f098d3cdaa7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:45:29Z), 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/TCADC1779647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840840b693b5ba3d188a7713dc82946a8462efea05ffc94abc47415c0a5cd1ed. 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/TCADC1779651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b63286986de0cf041083bf1f57082c952c8a25575ae41e7398b86c8c5efa317. 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/TCADC1779654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddb1c18e0d977cf51de6ac1da766a0ffb6495ce9cf2ed22881a99d53ad55981. 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/TCADC1779657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c0ac4e87764eef4573d434112ced592a015ab1e27c5339a7b9fe9e3e33e615. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:13:25Z), 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/TCADS1811835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd091f3dd2fdf28b9fd7d3a3b63b50f11d922e2c76a7e560e7f495524c7f7a31e. 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/TCADS1811837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c62153d2da1e119ef9e747d59d3e3f0132fe8ddd79ef59ab5eb8da56b903cbf. 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/TCADS1811868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619a3a124ba97864ca845c6c6163d88794ded6555d883c84d5fc6837777579c9. 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/TCAEJ1975453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfc01ae363047ee55a0ec8f90c1d0dd8352b0a72d29f1d7aa73415646b57331. 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/TCAEJ1975458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34aae0bd35cfb51546991a0c616e0ca2b7b4a8ba4d66c57516376d6f46a19035. 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/TCAGD2298656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9429a38943fbca48221a4af65940985db976f15348601708d975c1d7616aa1f. 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/TCAGD2298769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c78fe4097a2e5ea1182b2ba5367c2d7e6b9727600d7b24f29fe3b9ad4054fd. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:33:34Z), 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/TCAGE2299008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd69d45a7bf99f5c0f5dde6290372094e22cfa3fd118ae9c8f80ac418c2a1d6d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:18Z), 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/TCAGE2299010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5087f9bbf61868e239dc438e0ab06cafb207a0f672bc1cd7ca1e3a3691e64a77. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAJO2581399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7dc257ea5be2a0ad49400201676c3ba2fed395fa9f946cc8b3459447bde78f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:38:23Z), 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/TCAJP2581408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2921b3a32d36b1fde0a19703e55a9bd32dbfb5c4bc8852d671fbdd1c078ac7a0. 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/TCAJO2581443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf831c1f4e677df0c1b1c403eb0acb95d93e57ac735da38cab727b3e82a25d0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:14:44Z), 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/TCAJO2581455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a453e15222142034c5a07fd346e488c51a63260c535c1435318e01ba611613. 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/TCAJO2581540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d8e922ff901c74248445020d510dde2f998b920d7a3f358cfd92ac7c309d36. 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/TCAJO2581572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857b86e82527694212d3979f4e23baa33e89e0a2afe744d8aab433e31c49199c. 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/TCAJP2564299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfabda27c598af91c5d50a1ba7ed11f71cb84ca144321b1a375d3fbe4db90e98. 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/TCAJT2563535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2ca1d10bef3fc7a15f30d878bdb9793e05f4eb7e0f7664e1130be94d65d985. 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/TCAJY2541351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda439b2768ea55bcf3d79114d0a279b0079c88d91323eee7ef674520961ec19a. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAJY2541378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe031c7a638d29ae56699f761c1adc0f50dec5b4209727a88c32023d62c08d5bd. 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/TCAJY2579765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae2e9c7572a4f666e6d60435fc54141e22f704be6d903cc19b1256e496553a3. 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/TCAJY2585663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d257d30076d6b4866a5b1cae2d47f9384248e04620343f41a073093dbaab80. 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/TCAJY2585681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ddc88ed33c205dca63b6b04f2c51e7f4b3f1b25f96089b5570202e27acb825. 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/TCAJY2585698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78052c371b1ae72bf86d8a34932b1f63e8084701be24a650c30bfd59e362e1a5. 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/TCAJY2585710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b63292f8c9b67ee1bce2c456d933482db923941ac12236a3171132a1300553. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAJY2588135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e63d5523cd8c3bf8eb7c02cd409b640fd8bd9e87a0cdb64adac3c077e8d1f0f. 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/QT65X2578444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f77940e822040f57422b89c217cd9625f72e73ac5b436a7bb7afa236116bfe. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:22:54Z), 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/QT65Y2511628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fc23646942d7ec5ce575e367d092ff7fe0ba6e2c1ea38a62eb4598b7272682. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QT65Y2560871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7f584176f7db3770b3b676482609008033b5df3ac0c201f54bab9ec56d1da0. 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/QT65Y2560874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e02dfd3f7be95145195dac6417e0b9f9a2056de19faf01eb9d59ad42464676. 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/QT65Y2560878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10f1e63e96d104a3de0efff717213c58efac1503b6df3e6a8e51312bc533614. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:07:18Z), 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/QT65Y2560880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b8957299d1e860fed274e08b9f121eeb856fbc7b376e8a409ebffcc3fcac24. 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/QT65Z2515768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5de8cde2af5a4fd48bb4096c4c979b53305be789f60d4a998aa5023fe54fb08. 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/QT65Z2549878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6b0be48a63e12959d0c364f4351bea82b4fd63b498fb9b9ee15cf076293c02. 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/QT65Z2549884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b68a3c7b856a0263ec563b7515ca3724004c5a23bdc1b4a93d870ae3e764e8. 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/QT65Z2549894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5512e2718b2903cba0d028b2fda6828419edff24f39a031b6a9a37dfb779dca1. 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/QT65Z2549902.