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 0x17749c47fdac23800eb23a58782f14334e515df24f66532f45e98a4430d4c9a8. 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/366cdf2f-9793-42c3-bb18-873984c525ea.json and https://artists.proofprofile.net/proofs/artist/366cdf2f-9793-42c3-bb18-873984c525ea.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 0x56a43d762ec6d06e280d93bd122b7d2162ec6bd4139ba73e5597a62632ef091b. 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/ES71G2008993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45dbd3cd03f2a28a307db2c01f182b372ee376ae5bf9c37137462cfc45f3e21. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:16:49Z), 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/ES71G1874422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28349c1fcd5c6126f58da800f6a5794c9b3215eb2e145d7b1471db4f8f6355dd. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:04:23Z), 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/ES71G1874425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9679e5da9ce8a26f630f50955ac8e83bfd259990369c52aea10e0ac410a8abef. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ES71G1874433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf223b1df94e9fb09a12df55992a5eedae0dd773f9ad2f721f752a35c4c635920. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES71G1874426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df6711e9dc5d250fd6827c3f1c410570e25b46880a6183f7b05117712716cac. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ES71G1874427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192da2adf9eced4b1f2b896f7ee755d313ca6b8c8b7a453e81fbb3078e32d57d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES71G1874430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57096c3f8a664954e79b9584ca87b572c927a18a86f0cb5d76859f0b10a33d7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES71G1874431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e80a3b001dbf2c2ef44e8fb539002dc77b5a1225804e5749582b06cd0ded52. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:49:02Z), 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/ES71G1950335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe347fc734ec5e05cb5e789aed01ada7848a82858efde947c3930343c20a8876. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/PT2DY2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270f3c2a827a2913e5284b72a6d3e2331ede3c86ec4e9ca8985f56d4b754693b. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/PT2DY2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8beb8d0c9c7af05c82c5d0893aeb3df78b6b1adc717e5b7be291d1475d66655b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PT2DY2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b064264865e88b3bef2d2a4ad577fc57a52befba7afa34377fbad0384e1a93b. 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/PT2DY2100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104b4e79a1e62f384f9522c72084c96f324f64c2bd49df65313fc8081d6de69c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:57:31Z), 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/PT2DY2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4ddf2e42d43c069ad36d55d962af6c8c9297a7803fea768625772390e10ea0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PT2DY2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94315ca46587c3956d34289234100ae64915a748d67059098f1c71e9d293d02. 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/PT2DY2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229c3489d0d4d53716eba160512d380153db2113d4e686729d34993dd885bdaa. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/PT2DY2300650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123286b4935dd921cc68d44552625a870ea25d67c5c03a51f3c2c77f7d3bed3b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PT2DY2300651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc12fabf03f82b07cebfdefc072a2346795e24521e67f22c1f1e0a6c441b483. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PT2DY2300652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc98e64f45b2c0233ef079cd7e0bef714ec6235803270cc6934c618e37000a7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PT2DY2300653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767de96a35455d4c4486cb37d1db1ffa926c959e653c43324de09f9bfcfee54d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PT2DY2300654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd705b574e08fbd9c52757f439ad92d812206d6c219f49aaacbc3a321c922fcd3. 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/PT2DY2300646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bef16bc8b41015ccfcfc71053ab2f02bda12f24b89082b593b90da232204d4f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:19:41Z), 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/PT2DY2300655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575330a2a8e5cffba992e7d6648d4a458de91c340409597834d5c358d28af259. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/PT2DY2300656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773ae7e84714cc52bd1a2b72ffb76f00b357d67408a2509d311ef124e9792682. 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/PT2DY2300649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dcec058abdf7566b30e06bbea811823b728f0908ed441916641d5031fe91dd. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/PT2DY2300648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c91a1227edae71eefde829bfede8672beef9cedd11ba230449d6fc9dc81520c. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/PT2DY2400377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4914e6e8fd879eab036d3ef13df8322ba432f82adbf064b8fed3d7556a4324a7. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/PT2DY2400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221c18f4b6bcf3ab50f39165679bac4f0c434a3bd20725eccb59b3e463203620. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA012591817.