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 0x798c0c9b550f1eebbc3ae29d736d11ae0b5fc076dfa811583598ba131f6c9864. 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/e4938e91-cda1-47c2-83ac-5f9660ea7eab.json and https://artists.proofprofile.net/proofs/artist/e4938e91-cda1-47c2-83ac-5f9660ea7eab.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 0x580f8e8b5c1411903c718bcaf897e08a7a709be03466f0148520851c01dc9b69. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRX762427803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b365131b52935b4a789ccadd2b7f5a89d8bb4ed901c39f90a4733d50b678f6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAIO2449231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe81ae9bb17cdce67e800d6c5dca0c95ad1be7bf9a391a8857a6cc43850b4236. 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/INJ221907963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6df6573366de99b9281b749b4a0a60ea603dd866992f61ed5d18606d6229ccb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INB942401694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2527267ee4f1d01285b8d7c72371d8e8feb5bf3922d52354118959f2d9237c. 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/INS182400492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fdc994752d6ac2e1253c59b6988cfdef12de0ad7c6f754fdb169fe99756cd1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX872409731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc733e6c3e7ac575a558678ae04f321f906a58d3f5a40d814dd324f2e4dae88fa. 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/FRX762400842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583a087452af192243b767a052188c7654660ab5e82e3537d1ff0866a6e4ab65. 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/INSD11935132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb861fc182fd2e762fd9931dd4a5a148e117fac8b765c98cf1c0cc2677d147438. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INS402300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6761b4fc3d4090804837e0d0d70508b211a6ea282a0d1f1b678e89124941376e. 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/USA2P2335989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672fff36ae02dd049c715d99c81f424f30b2d76b972c72b44e1fcb288002b392. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INW262300284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f96d1d80ccbd2f9feff62952ac115c0e8d9f2c8506ee187b21001f47d3318c2. 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/INS402300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb698bf5db0d4ccae237b866a191d03db69c004a7ef041659289fa89f695ca4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUBEC2238956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bfb23d780c569b4cc12239e284c18ec8d91e2e7ebeee293cf26f01dbb04db2. 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/FRX872240590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e27aa8c6beb995c6c76dd1242f4d35ce5baade371fd00f70c190f0669717692. 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/IND712213887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477ca7158035f33fc69b77c9927098562e4048a136a17b564e084d4f65fac3ff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INE182219759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa3c55fab95220d850e63865cd96038b2a54d83b7d2d0ccefba2587b2714a95. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2225768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef2f651888e7869ab27ff4cbc823237033358e9c45dcb9df5e782c2eac9dd9c. 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/FR96X2252799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1958897e094ee14054c7d96dd18906cb265b801b7688b43be5785d4b9ceeb9. 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/INB942200455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c81e2dc7c6540bb72fb5afae190a56070da13ceeb39a28f0476559223db45de. 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/FRX872183177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af5a3629a7407ed8e992864623e2fd7234b82da730f48095ac30eafd68d75cc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INS182100436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17efb445c001445593a864c57fd4d894a619ed11fac867c4f03e45ef8b7aca0c. 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/INS182100172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438ade4bd816adc3dc32a5d7c8f4650d2b5d177ed5602f43b6d5fc3481f80294. 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/QZMEM2031160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe81ae9bb17cdce67e800d6c5dca0c95ad1be7bf9a391a8857a6cc43850b4236. 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/INJ221907963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd398ab159a646009c1a6120be9137a2bb7a9319a7d5e048fb5bfd5d0be95d5ce. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKJ8H2405405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fe44a1c0a8bcd368364ca6a85b014d3c6a28b217b72ea01f71d79d3641f930. 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/INS182001565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00670ca0c2a2e9f50d6a3e1dfc4e9b058b086522641e190e9ec5cafcf828e96. 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/INSD11902380.