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 0xc03dbc340016192ab29ed0cdc699e2c401d6ac8cf40088be50fb5c3d806fcae1. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ceff871d-4369-4121-ae25-74394e992d51.json and https://artists.proofprofile.net/proofs/artist/ceff871d-4369-4121-ae25-74394e992d51.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 0xee0c540535fd7be4e6d872272403a3ed799f85b7d4cc5d001f8ee3202c57278e. 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/NOGJD1003010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827f3b58381ed672678aa986886fb3474d384346667c68c2eafba47b9f337511. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/NOGJD1003110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c0f185eac0fc56f73e8a3fbfbf34295fdf7d9a9ae65aeea94fc47b13d2903b. 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/NOGJD1003120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce78bce55aec1892bd3c2bef46b032dcbd27b52356982f16502bc42f030c03d1. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/NOGJD1603010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0206003e0c607ade904b28b7827b0ac4430e845ef46496f2d50b94a0643971de. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NOGJD1603020.
Čalbmeravkaleames (In the Blink of an Eye)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d651749b679e3a66da30e04d8760513c4d4eac398f8de8c1c4107b5ae4b39f. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/NOGJD1603030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe8fd67bc3c94f24e2c6bd32f61b63465ad1172e4030d96c4cf9dbac5d45bd3. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/NOGJD1603050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e60503a864fd19e6c8baabde81e4b8778766c73fe6352240b4595cc6b25f4b. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:22:06Z), 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/NOGJD1603090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d2dd96766a41126ab1e60297a45f6632bf05632cbd16085103cb0a8174abf6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NOGJD1603100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db728aa73a08dee52275e8223e0cf77ddb36589b9cdbfac9c7efdf51ae4f722. 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/NOGJD1802020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c99556487cf77159ab3c3c6cdf7cc084876702ffc3d6a49db75f7c68f54428. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/NOGJD1802080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadae092cb35850404a137b09a0c957ac20762ce5d8663d89771bed2657e4aaca. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/NO2W62202003.