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 0x0504951f3e9bc0e9f708fe871acbf1810e11a52c8e8562bf536459582455a1d7. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e92e48ae-52d5-471d-8243-3efa7190e060.json and https://artists.proofprofile.net/proofs/artist/e92e48ae-52d5-471d-8243-3efa7190e060.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 0x5dffc7d458402c63745d21581c6e8b8e224c8b28e041710d19714b8f0961c12e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/AR5UH2504234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1863b9e4ad6b2d71e00c54e7d6f6a267a0f44f5ba973ce5bfa1ba37e460a30. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/AR5UH2504235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdc689198264fa7a4554b0c360e6417ccc0a414c739fd6211e2f816841059a8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AR5UH2504237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ec0089c22865d253e3e3d5bdfa429cbc61ec574cc278676b30aa36c5d14f2c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/AR5UH2504238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a86a6a3f5eb35f9d181bb22865729985ec0ef9e3e20fd84b888cbd0d34aaaa. 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/AR5UH2504239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f94abdf335bc27a9068be17a3add634dcdba625cefe473b09f9873e5a60b477. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:43:06Z), 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/AR5UH2504240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16feb2d848a8143fcc82e6641522b75065cee97a1dd33a434fc3a4b9306b778. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AR5UH2504242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dea153486475f22aa358c8fa61c184e390791ad092d7c277cc727401932ebca. 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/AR5UH2504247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24e68094531a6745f60c6e9ca5e7d0508524f7a07a10407a2d86ba9c3a7812c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/AR5UH2504249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5420ae086e34d7e5a68a8f9d553fbdb639443eb7eacd9d8c637048cb531295b4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/AR5UH2504410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbbfcb14fa096b32f7c7c2dfeda341f54d142a0a40f2ae52fdd1069982fe841. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/AR5UH2504652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a52579992488cd2dccb19d49d1d4094629c7837c87eb408d24af721b4581f16. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:16:31Z), 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/AR5UH2504654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dddca6f260f96b68ffe5617dc6d082226f95f7f30449eeea176d02dce227199. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:04:09Z), 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/AR5UH2504655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6e0de5a9d019205357ed58a5ddd219d822a746996865e51142825e914b4d1a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/AR5UH2504656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40a1aac2528560a5b9ce42d22d655e5bd2ad94862ca48cfb9b98d7e747a1ea5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AR5UH2504657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc808db73d27903657629bf4a246cf8b7847fd1d8036e3e3ee5b778864699b9. 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/AR5UH2504658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9dae141e8e9a9b524d99605d04c965cb1c32e72c0b3cf5ac29a5d59967a692. 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/AR5UH2504664.