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 0xc59ec7f6f458db3e9f26023ca9393c79eb0e46922b2ab7ce97354686586cca02. 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/41437ead-6558-4fea-987b-dc30e1610773.json and https://artists.proofprofile.net/proofs/artist/41437ead-6558-4fea-987b-dc30e1610773.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 0x7176b02ddd60859e22d6e6aa3292441fa0328ae2169ad234431d4198842661af. 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/DKAZ71513303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf201f0ee84adc562e479200646371346f86be2355912e8d4403f463d93aabbd. 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/DKAZ71712701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd754f5e7fb951ad8020db98a5e31788f7f0f3145afacbba1c266285173e63f1. 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/DKAZ71712702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad713a8760944c0d08126bc12f17721770f2a02d9f8d9591723a4daa63a70e5. 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/DKAZ71712703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625eb887eef8d37119447b9297f32a5efad3511ac4389a9faaf49887832306a5. 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/DKAZ71712710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258fb374d84785e87377e9d57cd4df1e2ea9d3cd9baf7a8c3639edfe5a84f663. 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/DKAZ71712707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff06c53b0210083e23a34aef9caef0cf161783501628715040ff9b63a2391f8. 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/DKAZ71712708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b87c9c9e54086f992c5d1d6745c86ac425d5e52d3457127629069343e6328d8. 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/DKAZ71712709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970fb641b1236ea183ebf0ab8710250efe18a93859ddf5af8be2b6664e3efe13. 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/DKAZ71712711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff06c53b0210083e23a34aef9caef0cf161783501628715040ff9b63a2391f8. 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/DKAZ71712708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f13634130ae15bb26660c669d32d13ddea79d81ba5f3d284c0e29303b8f7362. 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/DKAZ71826701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb505595ac8d31b950f63cb3ce975cbccb5ec7a5a671604c72c97919f8375cbd. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DKAZ71814501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace9095b32eef6bca47db004e91933c1cd92ae9602003e46546b01d03f9abdfd. 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/DKAZ71814505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f13634130ae15bb26660c669d32d13ddea79d81ba5f3d284c0e29303b8f7362. 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/DKAZ71826701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fad51d6d070e09cfb6ac831c0f85c2f31d4677dd3a875215125ef28e9dcafa1. 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/DKAZ71814502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a856daea9888907c97dacd5fcafd8724d96146e3be0cc3bbb19e651545f18a. 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/DKAZ71814503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baa50329dde2b4e4aaa9e05f62dbbf3ad0f9ae235472a5ca4b4aff1734b076f. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/DKAZ72020701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b71440aa71d0c76e2ee7d896e8f760f89a98eb4816bf5d67f4f6cd6a784407. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKAZ72020703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f9d3ced2f1853d24f9d841b41a7b26128e1bb0a32d22c9885edeb576dac3a6. 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/DKAZ72020704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b1bfca7f79069bb5b5d83ca3ca3f08bd2da598d38f2b2e024422c7cb71a3ba. 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/DKAZ71920701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f3b1182699b47cbb57925ae1ce3ddd9a8fd4e18f6fff8d39476324d77e7188. 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/DKAZ72020706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd167755e609ed64065038731a8e2c226878fbdd785b43ed85bee48d69341266. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DKAZ72430702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef825a4c94a5d4d416de737f1b09a85e24afe89974a3df185937f3835080e06c. 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/DKAZ72430701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80af70229bba1780e2b3069da2ea0c1c879a6e4586263c478122e4acb612a43a. 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/DKAZ72017511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ea9a06914214a0147b640db3089f955bdc4ba4a44b7c98d86484d2da4c9b8b. 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/DKAZ72331601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff06c53b0210083e23a34aef9caef0cf161783501628715040ff9b63a2391f8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DKAZ71712708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1da0837572f5d1188836685e259c648c722b08a751ff033d1660d16f873e62. 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/ES8741610105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed78de75575bbd29d62a5bdb623fdcbc6f412fb5bfd8d63e659d41983ef84a39. 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/DEGE92200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef825a4c94a5d4d416de737f1b09a85e24afe89974a3df185937f3835080e06c. 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/DKAZ72430701.