thumb|upright=1.5|In this illustration, politician Daniel O'Connell dreams of a confrontation between his outfit and that of George IV (r. 1820–1830; shown via a thought bubble) A dream is a successi
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 0x769f23bd1f7d94f88f2ceb0f91b207d004560e0b4a67d10586113bfe24689f6e. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8dbcad8b-fae6-4619-8b99-5af66d7302f8.json and https://artists.proofprofile.net/proofs/artist/8dbcad8b-fae6-4619-8b99-5af66d7302f8.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 0xe92d0437cd09150ff7b539b69a511041a15d914d393a606054d3b596ded74164. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZNWY2070301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc239d1d7a3139a2712b41b7c5ab438bcc10f1c2436bfd2a5a7a3b49972cfa6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA82229802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6481d5a94508d14c927c8e9e9a647d8685ff4fa4308ab78b623d422c42078d29. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZNWT2294127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57891d558b707a2062fb52c5c7d14eba548e3c36a2b95dc8f3688414b7df84b. 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/QZNWX2256087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2755c21f666c8b0772f6e4d30c84a6312eda31975e0b5ec9040182e56723c56. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZTAT2240098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee73544dea7a363a1138dcbb341aeeded7452650e23dd8f20221cc57a0207875. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZTAT2240099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dc8b32d2f89fdae98bc128cc385d10bc89ef327ba3a1210ddf7e786a92cf27. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZES62313366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a454fb51965c6a4dcfc2a9b4cb9bb9140b79e27e0b6c34e5bf19c7a0b0982d3. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZES92300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe6413dafa115486e9bdd923d5e616e44bdcf0e07cd0591e2cd8646048efbaa. 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/QZK6F2319571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad96e1a16e79a85d00c879fbc1c413a1d70d0071a45004ef3b3ea642effaf7d3. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZRP52384754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c0e823ec18e7fab9401830e668046e07844c1482f6640063ecaec08ca41622. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZRP52384755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423ba909b7ad46f228a42fc7d5202799bc9bbdf75518f228f60d66eaf9c2fe48. 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/QZRP52384756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7636ffd915ea3560922d9df55f09016e419ff1cb3eea12802e12e972f68ec0cd. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZRP52384757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f631b6f97db30a713c9308f03c33a9e9bd14215591e97ad2c56fe15c3cab2b. 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/QZRP52384758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0839e9e8bb766c9e123086e71a181f402f20b0d7b93add91e87991da82268240. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTBE2389382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2869eeff97b443af7f10afdbb6c08f5ba067f2622deb8052f99510858ff37a. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZTBE2389385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328664f2bf8c2d4970639a3dc71a3b9967b737d854bd0ea8ee5a441bdfa98861. 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/QZTBE2389386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf109f2e29a4cc800fd06983bdad33627aa05d577825b9b82c4e029e7c08048e. 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/QZTBE2389387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2608af51c03be5736c8bb7d614bb6b6f1b73f6e3611dbdb7c2c953633bb23ea6. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZWFM2338260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a93986c8454afc69b730676bee8f9acacdbc90b5e68c59bf66cb6254f1b980. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZZ7Q2417672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e001ab682b64e748a41fb29a5b1cba5f50c76500c3193cfc3cffebedb8c9fa. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZZ7Q2417673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bb69c4fc11335286a0b44f78796d7037e2785b8e339d5d997e1ba0b8a18310. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZZ7Q2417674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc612814b8e5a9018a454c9dc875e6f53adf14a4bcd4dc7e56d822e43a3ee8329. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZZ7Q2417675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7053dd442769fefff622837b12280ba6e650d13117dc796adf910e196c796e. 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/QZZ7Q2417676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0aa63b1e126093074817bfbb8d6ee25ac13a9fb9cbf5352e8e65e5bfb840eef. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZZ7Q2417677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9bcf4f369423db03271cb3071697d4a24333816b2bb823cc90b05e2fbfb550. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZZ7Q2417678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01412901ebb827e6c077ce5e79f4e513a3c5db3b9bdc7cc711843cd323cfdace. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZZ7Q2417679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faf431f186f00673eed07d96472a69f41ee4a6e712be59591fadcacaec7787b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZZ7Q2417680.