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 0xbfdd8245cf232da49e0405511222771cb65774f8a7640028aed51e9ade4798e5. 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/9b3f0d89-304a-4dd3-ab23-e56bbb0710bf.json and https://artists.proofprofile.net/proofs/artist/9b3f0d89-304a-4dd3-ab23-e56bbb0710bf.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 0xf3ebca5a954ede395dc4ce590b9538c160e7380caa7dea9df23b816c3472c0c0. 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/BEB682000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbb1f43e44151fde3fe12d38a533c7efd13a123de75556516de181f07fe23ef. 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/NLE802300291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7f3de7c48f13fb5104e6651b05de3eda8a485e2a92ea08de1d4d919fe69d48. 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/BEB682400761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4413c14ed40e8fc77de5ddf38c34151160a1f593d8a73da943dc5d953119edf. 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/NLE802300377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d80c9ba4fb3a4345f47ebf27606de34ab8c117be48a8040f2cb294fe638af65. 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/BEB682400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5767e513fd598801b2d65032a8b270ef0b218b66fac1e0886203cd40169fafc2. 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/BEB682400763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a710c2c123e566b6f7796d7a45ae25473dfb198dfb504deb51f9a904643fcf5. 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/BEB682400765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d9f8535fed5839b3fb3719caefa11a30eee575433ab8a3edda71a275f7cdfc. 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/BEB682400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4098120806c397568473c35e19958b5fd987910ab75d5ddcace55257ffa04f1. 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/BEB682400767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484d3ccf2b060199a5a3b91e4642c3301d022a5f9edb16b50efe348a1a5d7046. 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/BEB682300431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1607ea999e1a456595c7696fc97a71dcb6f6f5870cbc3c3b187c2af30dac078a. 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/BEB682400769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d6de83a70fa9be7410ed89d1c151c40ab72251d232e1d95178589922900d0a. 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/BEB682400771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa562cf5e356ad1d17fb6aa44b5a44b853fdfc9773c4445d41fc700dd5974c6ae. 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/BEB682400773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016b64faf2e0a867362202c7e56694da018c5cff731d38f0b95a5506a389036c. 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/BEB682100495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d80c9ba4fb3a4345f47ebf27606de34ab8c117be48a8040f2cb294fe638af65. 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/BEB682400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb024317a29df4869b3af939587bbe72058bd677bfd05e51bc72e908772edd660. 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/BEB681700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cf63333bec92e2663498e0f144061cec42e76accb7de7dd2c983849a7f63d5. 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/BEB682100144.