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 0xaffa01898c374ec6127f5d217e61444d38d33aabe969f840d370c8217df8e183. 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/fc51af4d-5b52-46d2-8418-d2cc69dd1490.json and https://artists.proofprofile.net/proofs/artist/fc51af4d-5b52-46d2-8418-d2cc69dd1490.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 0x312a807ca0b45a0ca4d8535d560ab841eecf6501e95ccdf3ae140a660dff4bc4. 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/QZDA51932408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632a0c31727207bd8a1dabcd6f91cb8b675c83b958bb4fb824f469647f5e5dd2. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZDA51932409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2341eb06659e92e0f50b4b31f13028b5c956d685478937b9262281c35fe021fc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA51932412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a41f99f964ec0d97284fd51d0fcdd190440291dfe316887eaf87fc29c0e926c. 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/QZDA51932413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6defea29127655f4f676cb74447cf27460e88aa7a10e54d08c2b30cc3a85455c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDA51932417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10982340250cd95670e35549855ad4f014d5e1b836472e611f649e30535968d2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA51932420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b395c3befdf99041241e72bceac19a95673d0772873f7f406e24dea354440b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA51932421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66174edd906a121e94e92e0f66f2143d2b960d7a2359f2bfcfacc9fcc103abf6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA51932422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cbc7b259813550c76bc4d3d49e9d37e02537c3550b286d3c22e4d9fa7b3b53. 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/QZES61973659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787a304207e3980e43c9a648a3060859d2f84ec66d21ead4fb97462c5d809d46. 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/QZMEQ2108781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984064f989f67331a3cae36b66007b1a8a5d12b341253df80aaef7cc1609d0ae. 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/QZES82218402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3dbc36443afe840b3d04bf971219b64dfcdd6be322557546d025f462dd7821. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:48:54Z), 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/USUM72401403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac43fb0f46005609da13c9a227f83b89f21e44973c6d7fa974648847cbeaa66. 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/QZTB92427060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff08ad7d94d1bad156685431fa9360d91f5edcaefe4b47a528471e3d7aa7087d. 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/USUM72411426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe19614ad881b67b1bd4be6a7da9c19187b86aa37110d8fdbe711eda0489ced7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USUM72404803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afc3d9b7307cc5db41a048af47792514ca0f7267b7e6de8ec72f4171309f441. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTAW2586738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950f8ced8774767a0a552eae7b4eb05c45ca8e06a430dd9f32810e38e15a6902. 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/QZTB62503153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bd6492fec1e9aa5ccff46f7c1f60803aebe02719fb8dbf005614b86dafc378. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZWFX2575883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0f8de45f774bc96e25cc71106d6df30d71c6536393dc5075746955faafbd85. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTBE2383535.