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 0x55fd0108c803b2ed21552f6f5b7b34c2a64a326eb0b28c93b375b0f80a61ebda. 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/bc012970-718c-48d6-9e91-a499ee2c02c0.json and https://artists.proofprofile.net/proofs/artist/bc012970-718c-48d6-9e91-a499ee2c02c0.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 0xc70cd03958c752ee9274286a86446c95a0145867e21dbce2c48c700581cdcd4a. 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/QZNWQ2084947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27604a23a946c32e96092975f90b5f0459949c4fb52e07ac1df99b3d613e026f. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:27:23Z), 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/QZNWQ2084949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4836d604ede5a776137368fff1ba63d50ad8a85b699b3762aee838b144aa44. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNWQ2086739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e8d8a49a3b105acddd520ee4dd86208f76b2054820957184884b9c849d0f09. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZNWQ2086743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a21a106c293438c46abb51b7e9916e1b8e2c0dc80f78d03b9e8a8efbefc736. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZNWS2003815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b73445d22901ff56e92ff598c9484520e5e520abeca51fa8fc714a4cad5419. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZMEN2161991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe280e7b7ea3000be3d2e74a3e70842eb5dfdc8872e949534120cf083d353f879. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZMEN2162001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc907cefddde75193c245de6771a5e7e43899f9c34c5ebadaa71f762026c967d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:28:37Z), 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/QZHN72376459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8015b17358965f1b0881b909504700c78eb616c4bb9823bdf01d64319a28fed7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES52481274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d06bfcf8f9114b69cd33fed490e50fa11ba0cc212c45bd2206e8dfd99c8148f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZTB22468219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac569ac1e64e2db080a215ba864195640a30881ab754f0d372d8a659a1478aa. 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/QZTBD2445457.
H₃rḗḱs Dei̯u̯ós-kwe (Alternative Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d10ba9cd1ba355d889deeeb6b311e027b5f8802bb8fc10ae97448a38453e0b4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN92502463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ced471292347b1086a0b27c5a0dae46508280efdba5e60c16e0c3ca5b605d35. 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/QZTAY2542931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29501445648a6cb5879718d05bd9a53a6fcd11a77c5b680b1810f0b215c6b2f7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:49Z), 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/QZTBF2543973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dad0ac9628f3a69b1f956ed6457444f6c8828d819875e219459985b1f11dc7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T09:01:14Z), 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/QZTBF2543975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838a2624231223092cca26742be0dd1592ae3953c6a5386dec66b7b10907b02c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEG932101555.