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 0x482b99255a934f58148762e62507a2d533e8990073b1a4aa01ed2a318b6ff6aa. 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/62733c2c-7390-443e-9f0a-a7d1c0ec0739.json and https://artists.proofprofile.net/proofs/artist/62733c2c-7390-443e-9f0a-a7d1c0ec0739.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 0xa060c0167b4e8c848b0a3e754981a2b9eb65b9e18169b31d65fd36464a508817. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:48:00Z), 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/DEPI82448214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018e62cf7cc804fcfee3f259962c500807d64d303efb998259b718a5bfe91ebe. 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/DEPI82448397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a003e1a6006f5ffc581a84992e8b8508b4fbe0324c9158ca8a002b8f9354623. 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/DEPI82448398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8071d4c65480d574b5883cb57dfd4f516028d1e3c527fd0ca6c91010f297b02. 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/DEPI82448396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976706ef97a6b164118d2e5f94fb0793bd74391453a9d42b553918780ab43eb5. 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/DEPI82448925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb16399c7a093f01433ec628002554bda6bee6194f6afc41d08e038839d8603e. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/DEPI82448946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0a6c2a3eb9ac35fc2dbe03cff93d089546ba65efffd9286a1e862e13d54fc3. 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/DEPI82448720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee808475b203f431eca55a77eaabcf0c87fde289fdbdef8350a5d9dea7d02fb7. 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/DEPI82448400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e096d716934b7442fe13cc7382a7656bd5c6f183d2372e49e76c9d6eab76a7. 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/DEPI82448923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2eb67b1a4c2f0b6dbd4a7657561555c5f97c73d594e295b593a3fcfed33499. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEPI82448947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf28b2320cfe2bb326bde34e98f6d59ff3444ef626f5992cf79322b642b60907. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:29:34Z), 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/DEPI82449171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aba3e395b660d161fb001c6e31382d51ce63efef2fc580ada176114df03d26. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/DEPI82449169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142c37455fcb65e14376e205669a92bedf9752310d416fd07e83a12c5f8b0ee0. 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/DEPI82449398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbc6ea3f356b2188c9498e9c537ae96c956d3f11f9da0117f8ed74b412fca25. 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/DEPI82449396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb444cf44516d7c2e35d41a747fc5b9061df96c4248ed1be23db5cec4c950fc48. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/DEPI82449394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0f800409d0ba0d6aa35177ae608d71448d413c8ba4c5e60d0adb32d1fd0009. 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/DEPI82449403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f13107be2f0b772d4d596e64961b01496fa7a745c478fdf273d6c130ee20e7f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:45:54Z), 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/DEPI82450251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a40bcbbf23de99caf20ffafac244b4f691f3ed19d2c0caa543e1b1d4517ad4. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEPI82450253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a611e2e930994e7a4d5e7898eb1307943259a61e48b4481a164d9aa31c2254. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:23:15Z), 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/DEPI82450252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa6c3eddc151f5549df3f67ebd56e091c7661763a0c23fdb157418ec073bd32. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:52Z), 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/DEPI82450254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f889400154e8ef5682ab4b4af943aede985f044d3aee25e59c296bb1c82ea41. 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/DEPI82450250.