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 0xc41081cd6fd2288111daac6ee2a5f784db3e7301c01a0db3798a4cc0bfe19392. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b60d878-bc91-4171-946e-ff60f3f380a6.json and https://artists.proofprofile.net/proofs/artist/8b60d878-bc91-4171-946e-ff60f3f380a6.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 0x1aa78bbadc03e1f2d4fcab7c3b6976291d0bdd2b9853b0fffdc197d1f08ac24e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA52423231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54706564f176ab35eab7fcd68ef6ed2b3da94963ad27261d4fb11e02ba37ae47. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA52423232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0219d77c3f0b190fc467a56459a55b362a2e6b206f39dce427902d7efca6ce5a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDA52423233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccc7cdce885c66fe63239c383a66bf5d725f6e0aae8fd0262356a48b852bfec. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA52423234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87670a269034e97e0a0fc2a07bb8c35a18ff1d2f26caeb8ef0cabb5fbeb5ce1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZDA52423235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3880f8f9003010c3b20590e6e8ea9222c256c3550349804b2e7b0b4bd72e934b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZDA52423236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b153f95edf36cbe50bd2364e26c689f273269b06521ca3855553a3ee83fc09. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE6SA2381162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb5c4beb891756aa87ea2bd6f22d0e20f53f808d55c2d6e8e6560f37bf74489. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6SA2326591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff04398ed6e00cdc6a2be005fcf761010736f8952eff917f80e5f28240a6d5f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE6SA2359084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0b5a36c073c0c3cea1c8c6c26a1e3a7c4ee9bdcd0fa48cd51a24bbe3a1d737. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE6XW2318315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42db111a7ba882457b8f730cbd8ec1f5445448568457f2262e38c01a1d5085d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6XW2316510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cd358b17d2cb0f3b9f4ba2c6629b5e93b298ece7c8dfe2f36d06842d691160. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE6SA2321918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9dce0ee083ec642e78c790bd5bff70b7ccd7460fe962d8bc8e4aa3f8cc32ff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE5BU2236798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305fed04de8c48a2e2639e6f03f58d9a4ee2488c3ec563009a52ab57ecbaf173. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZPEW2476319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356cb91f79c963c1bb069e57d0ae32a990d0af9cee56c7c5a59503ed888eba8a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWW2421979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f928c76078e663c38194e9c5847cbd888fcab4473fa291bb90a69cd105cfa52. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWW2421980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fecac9b2ac5b903d6fceea79d3775d5bed6cbeb0fcf28eecd810bb56bac133e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWW2421981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2037fd5e6da9598ed7a04070e56cb945185f461f6cc4aacc62f2b996593da7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWW2421982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb7f336c9fd338ee5bf61ce2ac6a358483ac7130d3bb34f21aefe445ec181dd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWW2421983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e46b3be83abaa568ebb2a54ecc0881eb2b6ee158eaaead6b8710db8aa15b882. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWW2421985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc69906fc89d7dee8e413fc476a8bedf3433fc4fe454345626292578cffcf317. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWW2421986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e9618b633243d06d17d306656083a02282b49565b0d66365dc4fbcd8447802. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWW2421987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb16abb62fdb54521886844496de87e47b0f7c9b9933fa3167466ed8b9d8f284. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWW2421988.