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 0x62074781213d270a12ed29f5fb5e61e09636bf741f3fa407e8c1e6f13ff160f0. 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/dff34a5f-a9b5-49d0-86db-e6eb48301b51.json and https://artists.proofprofile.net/proofs/artist/dff34a5f-a9b5-49d0-86db-e6eb48301b51.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 0xe44482d969ac8e872e6b63ee7f697f4a872a3daecebe7ee9962b6a796e36d652. 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/GBLVL0600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdd0cfded700c5f942b34c89a9d1d4e94b52f97cc885f6465ef4d2db485532b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBLVL0600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3775c903f70a1114c1cbc91419e35b804e21a0919a5ed0c19f356e0f0155844e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBLVL0600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74fb417763f8418b5a153b3c0ffb9d0d26d01f9443b4b462e85c9332f756238. 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/GBLVL0600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f34e49d897fec8bbe902ceeae83ab00f8402fe5e1dce518908fa26079134f4. 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/GBLVL0600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1d642b64111d32909e18a67d858367d9e8e3104248a0b7f576e60f6f2288bb. 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/GBLVL0600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bb51262c9c8b52b7c10bc2b245916499ebf6a074092e5daf39f40228c6747f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBLVL0600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3c160db710366cd3e550c66511ae43e72494f49dbfb0729cbe6af37625f60a. 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/GBLVL0600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c404a7c11c715fc411672f67e48fd64e166a93e96e9ac43a57b2bf8c1026fef. 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/GBLVL0600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4643bb23cd05f54d9e3a8af786b2fad609e974b49cf5e9847536c7fc717c9a21. 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/GBLVL0600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c14e3e1037bae82d79304c210fcaf99d8bbf116e724ec8ac3eb760fa8d3347. 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/GBLVL0600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e8944c24d5bc60dceb53dda26df810cb4740ce780e68577a85ef8ec484868c. 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/GBLVL0600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48600ecc66484242b1fb532c41611d254ff37582461a0cdd63f36364008e1e9. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBLVL0600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98ab05fe657be7154badfd57420ef356fe2702ffadd2853a0a1658a49789228. 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/GBLVL0600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d84ceb33f940ef539315fd209082b8af3966855767ba0994323861fb1c37985. 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/GBLVL0600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b70915de142ffb03578ff61af297f9eae946a6b532537cf4e1effeb7d7f4c0. 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/GBLVL0600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc645bf320c5351c9c0d2cfe63dc6b1f93a8f3533551e19747f57cde59ec8f03d. 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/GBLVL0600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee404aacef4864c746c1e58048d8fb3160a6d36f051cec3a7a0055ff2f80430. 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/GBLVL0600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f26d19316d8cf2c40b8a605a5272f432a7efc853ef82e51b4527c2090b23427. 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/GBLVL0600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb067a990890015e02a2c1766ffc2130a037511a3040247f90ea37837beddfad3. 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/GBLVL0600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9610c336fec83b59b94402e39e6be4cfbbae8be4f824d1a7d292a8b6aa0b83. 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/GBLVL0600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8274d2b607d0fdc207836b1f4d43a4eb6013c14bd27cbb16d10ab523197af54. 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/GBLVL0600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8c654d2ce66c5a66c963815e26f04656800b0d9720d5625bcab76d39fabcc2. 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/GBLVL0600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57575233bd3e693ac7625ed8887bbd0ddaf2279bce9d97c8d24e53babdcb0fad. 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/GBLVL0600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a090da3b0517b0700e287150994791c8b6a2ff978060c9d92b75034cadf1e9. 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/GBLVL0600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e661d1f58debe70f00a7d1b34fcd7a003867238ce635f902eea2c3ae51aad53. 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/GBLVL0600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe192eb9aaebb4031bbc69d84cd9c7f19171de578696774e439eb8fe78a6c7a1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US2S71047006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfbca1058837e9bbe0adce6cbcf1b7a2bbbf3d25906c802bce334e195f61f25. 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/USWB10601103.