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 0x505a0963d07ff4e15db1a50fc7f3b5e0955603d78d122ff0d3533703b0de9d64. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c779243-d845-486d-a69a-daee8007e916.json and https://artists.proofprofile.net/proofs/artist/2c779243-d845-486d-a69a-daee8007e916.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 0xcfdcd1d6a242ee6b555c05589ea00a4c215826667f37f320720275c1d5383bb0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:26:46Z), 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/MXUM70806457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cc81e1ba00ff68ce4597efe61b1d984d6678ec47546e206de431765af21ae5. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:05:49Z), 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/USDS10600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dd81b34f9cefb840a84049dc28edd8396c0b8e793051cf4567b30cbc978096. 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/USDS10600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750ddf9e8498e7c41dc0c9c59101a15277e0e6e65fc0f059964b548ec0dd1337. 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/USDS10600306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c560510b1324e4252ddbed7d636724095d7d70fe06d61a906c37762ba852da4. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/USDS10600307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2471e62944da90dba6fbf0a371d32cc6ec471156231bc8e67fd4def33c07c0. 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/USUM70965425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cfd51f4ca548095a6b2a415b7196c18dbc371320a9e5c97b3ad7089e075c11. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USUM71002976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2b2494ac65edb85aa9f9296716c334558dc1d6aa8068b870be5a7ce563cf44. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:10:33Z), 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/USUM71003039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28300136eee0cb90dba3bd6c1caebee431e9aefeb8881386ba30cce73ddc13f6. 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/USDS10600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d571fe9f8fe378af9b9925483bd4974417d0060516ac2cc9e7e0fc5a26165d8. 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/USDS10608872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967fa57372e0ab57904e0cb43d31d51e3ea8ba246eedd915e1b0d353166fe6f0. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USDS10608878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9a2c72827b35c601cf69232cc0445072690788ffe06ff4562f9658467a93b9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USDS10608884.
En Vivo Desde Chicago (En Vivo - Chicago / 2007)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb11101adf96ebdb41c5a70a43015fe927fc7579c9c4ad5237ebc7859ae17458. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:14Z), 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/USDS10812496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2d895d1c22b730fe9c74a27b1f2b37a68d61a5dfb0523b9e8576c58cb8d87c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USDS10812497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f662ef5d40214895123b39e1dbb04f493912b302d9c161bf30f43d45e10aa0a. 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/USDS10812500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e02053bff55519bc5a947382ccbd37ed429c86ccc5352637259cad9fd511c8e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USUM70967830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2912703958e2469ebc42c29485e23b4cc655126f4196d93b939996ed15f2e3. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USASN1102521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7eca0645808e59301b82b2623e73111205c292ebf05c0806e0bf45071834e54. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:01:59Z), 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/USASN1102524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbad137e289e77e878b4282d1bb2fdaf3a45f059b04a35862fe4946c4252024. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USDS10602275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddb5e02266196dcc4ef165de3ba605af9f22799212852e8502c9a61d6faf9c0. 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/USDS10608875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfc4781447129cac73cbb3c904ee4b28f131e957e7b4ef7ae224caabfcbd75a. 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/USUM71002975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d66790a94822f9dea4e72a79afb011c207e9319163286cd80250f7c06014f8. 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/USDS10608877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd411888778c03f985ef286553d06e196ec1c2587a01c221b26d42b7eb094da8. 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/USDS10600298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31069be2f6c006e98a963d3ad9f80e79ca615f83f02f1cbbdcc9d7f1982f12c8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USDS10608874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95dfa6c930f2c59da3c1e2ae1f7d344b7d4d2d3d4850668371257465839e37c. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USUM71003075.
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