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 0x92f47eea40e11e3b254f50e1b8f295a175547e828e18ee5f96928bc9a18f9f93. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18631773-440c-4685-87e9-d24e9f3b369b.json and https://artists.proofprofile.net/proofs/artist/18631773-440c-4685-87e9-d24e9f3b369b.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 0x3cf8fa72066830d786c84b5d7041c7a1db49955c862729e4a46bd25c3bd526e8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:02:34Z), 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/QZGWX2204267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bc338b1398ffce9f6f9fe8b64129e95fc865efe2c7467ec6ba12c9fcefb4c1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZGWX2168226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bc338b1398ffce9f6f9fe8b64129e95fc865efe2c7467ec6ba12c9fcefb4c1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZGWX2168226.
Oo-De-Lally (Live from Redwood Nat'l Park)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf8fa72066830d786c84b5d7041c7a1db49955c862729e4a46bd25c3bd526e8. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZGWX2204267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa365a9fbc5ac6d45dc650adbf941be8b508a5425562345c163d3c711de1edcf3. 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/QZPJ32105109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a61c20c52b0a1c7ec06834bdd50549a385209b1b2dabb6801166273eb6802fd. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:51:43Z), 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/QZPJ32138891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dde1685d4fd82b0c065521326040fc9dc8275ab2b18f680e6995005c3d2a61. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZPJ32253987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db3aa932ef4827949509ce4e291e89e93b8ecdf615db19c77aef5b3557d59e5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZPJ32345009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db3aa932ef4827949509ce4e291e89e93b8ecdf615db19c77aef5b3557d59e5. 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/QZPJ32345009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24542fe5ae56cf99c5663a75ae30bfa026b672de5de8644a59ef29558e4addf8. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZPJ32352163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cdf3f28d0f47eccef9877f80790f4c9cabe3ff8c9e222fc9a9456731761d78. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZPJ32366690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb298c4b434f5d15b31450c9ccb4fc1f9187ebdabd2ed3c1034ad605d02a6a05b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZPJ32369288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad2af5d6ff8911382eeb4a461939475df2e920d5253da62de31a3189e1a1532. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZPJ32382804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2a8b0cb2b7449d34cbc717122c3053f935685ad998ab2040edae844d6a631e. 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/QZPJ32423004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc284242c84c2598166249f1b60215cf57e0bd92d6280ce2d1b07928935dce134. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZPJ32446653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad2af5d6ff8911382eeb4a461939475df2e920d5253da62de31a3189e1a1532. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZPJ32382804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a278e437323d1321d9506ce8fb09ca25df61268a6ec128948e1df7ab0ed1ff2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USHM22518174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bded83418e00321c2bf0c5221ac35164e5f850c3c85844f808a87430333648. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/USHM22518175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4d2e3c5a0afe0fbf49a97e3127093546476e16a89f8da1058e522d1f333a43. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USHM22518177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769c6cb71fe4333abf6bfb32b46f53dbc5249995ea4e175c269a58b580736760. 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/USHM22518178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9384f4cb71c2da414a696d72b4de58070181936dba824713061246e02cb4c4dd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:05:15Z), 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/USHM22518180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e740e7a1726baeb5004520cc9c454e8b8b365975ea2c79f8e77a24027545a85. 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/USHM22518182.
Star Songs: Lullabies for the Whole Family
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31c1f42f98eae04d5fd132520ee241ba2d9c27127e7e6bd80f10e261bd7ce97. 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/QM56S2356702.