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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901769dfeecef06d27d433688c5b07795fc1810e5d07bf46909a9122b3dfc3cf. 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/a3ff362a-faf9-4121-8850-659000262105.json and https://artists.proofprofile.net/proofs/artist/a3ff362a-faf9-4121-8850-659000262105.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea4b8f2ace6854d44bcab435a6f3148dd7472fb47f25dc02fc8c0d314e384f6. 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/QZK6L2473688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5094d2823f4831aaf1e3037e0c647301f7294ab101b7cc4d09f1c244ddb87f8f. 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/QZK6L2473689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0110164b9d0920e78d960cba1a2fa836c6001d66ad6306476392c2fb181cddc. 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/QZK6L2473692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2516acba9c8f75631d034743e8dfbbcfdf2f8409cfb7fda5d0c79e69a95cc981. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:19:22Z), 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/QZK6L2473693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513ad3ce184bffce3ff4945f3f998ad52e08ee9195b8f9d164647fbe7e0d1f0f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6L2473694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43c3ca59b963e19de84a43d0f34c22e2f50b9ed93e69238e72676fbe981a242. 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/QZK6L2473695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2d0c76143474be373555e3e9bb8da93d5f96d7b49b535778935bcf8b650476. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:49:52Z), 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/QZNWX2496839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1146c278ce666a4836cc8c3bab5b04692dc8d2bc1317c54305ed4dd0a8d61d08. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNWX2496840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8794e19043d88fa1cc3f8a4e5e4033fa0f0675275f3608c1b18ec409991952ab. 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/QZNWX2496842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd757ed1c9aab5e47125fe69b96c3f2928dcfdd0107bee72a2006f53c01b4d2a9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWX2496843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6603c33b753fdd2b2ff141aa81422cd634b0cd437c2e009ee88ae713b176bf. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZNWX2496844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f5a8106c889947569c82e0c9c126d14a9f4903e166ea6bc858e2038a9a4275. 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/QZNWX2496845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ee82e65335570ef00043df89cc89d71a646e36c8208730ad74e83b64301af3. 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/QZNWX2496846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d380a5b75b3fd6beafd958cf6aa88bcda2a3b46298ed3132aa1f1cec46201b6. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZGWW2056975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4166dda5a0d0f7b2bf457ffe1ebc76862eeb2e4211c912111740fc47a4c22c52. 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/QZGWX2236076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ca3d6fb5291f88df73d5bfce07e300a45c17c4afff9c444cfe54b281631bba. 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/QZFZ32027217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d08ea313118fb21a90c55838db1d27291798b3e1b49aeae38f42f0da398b405. 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/QZFZ32027218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549608888110d756649c318bbd3add44ff91784eaea167870f50c3b59dcae937. 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/QZFZ32027219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c976acc4d04e37b972a2a9febc45438319174de0502e7286b0a857d9987490e. 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/QZFZ32027221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552727778a1c9dbba50192ab9268c434eefd9c538b31d46e5a0795e13c1e42a6. 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/QZFZ32027225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23264806f548eda337bcd9e285028c1578f4346a63c8835c6b56ee95719526a. 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/QZFZ32027226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094a3665d87458ac6b39959573bd5997206feacf359d7abe612cc2a9e129e202. 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/QZFZ32027227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb52fef7fb8752a9573400947498bec90375f32913c76e3580e0ed835c4c22d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZPJ32164995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be9494d60f74d77c990a1a9215537c312e3350e2186c2b2ef3ee01f63e0677d. 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/QZGWX2236314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f847188ca30af1ae5b203660ab8508f59c37847c6a88898d7f81a992721c01. 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/QZGWX2150209.
There Will Be Generations Because of You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3475804fff0f97a7c3c8fa287be1307d1335b5fc5b1cd0689b49b809e42099e6. 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/QZGWX2107798.