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 0x84b251b0ad3044637a370036afdf7437def6fd6520aaadef6b7aafa3724b02d7. 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/829d37d3-aecc-4859-b72d-8966dd9e16d0.json and https://artists.proofprofile.net/proofs/artist/829d37d3-aecc-4859-b72d-8966dd9e16d0.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 0x46d9ecfd35876657d47300c22297d45d4cfac207bcdb8d9ada822cee4b9b9b72. 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/CH6541718335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f2046c78a2f5943d49659143eb6e7cf40b20f70c001657ce58091879fa5449. 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/CH6541718338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033a0c60d26d581297e431ea828dd4c1a240b9470d2c8bbd54f715563bd6c28d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/CH6541794587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bf4978e2ef8cabed34f8243b507d1a802c5f2f048caff1bab7ca3075232be2. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:10:59Z), 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/CH6541794582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb802d79cca46e867566a40b0c4606c59513e7118926cbbf433927d3709f2eb9c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CH6541794577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018afb1f34bc18fb886e4bf81722b81f289e97cf3c8728ed5020005162810211. 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/CH6541668207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad92420560405769b459f8801778eee400ae9b4846edd082c3349ed4936d81e8. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:06:04Z), 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/CH6541668208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083164e24958221c3f16ac99bf971907c0a5ba7a00c479737a0333987bb76fb9. 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/CH6541668210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2738b2daa37b2405508b7b3e8372a66d5e4aabd4f7100985064000acd82c51. 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/CH6541668211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa578b0807d133ebf5cf6fb9114d9c3c85162258dcff0f645dfb87c9646c2e88e. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/CH6541668212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a5fd5901de7370be50542643b1962fe11c5269c97c64506f9fe3aa876d275c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CH6542131357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73a29cd94b2369ae2d6b01e3c0efd69056fe93929eab2b084a02f663f5120e6. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:53:43Z), 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/CH6542210898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880d4eebcbe0d80db06a03994b352f477d5931b91787fdf91eaa126e3c6418e7. 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/CH6542230896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29b90f400bcbb633e4ff98b1ca541fba1609c8944d217f8782d904127498247. 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/CH6542277061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3731c7427797752ac44fbe49b9308d714a4abd255eec7e1a0bfc6ae637746677. 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/CH6542277062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b72feec4de74a841b2559052c5e8928e451cfd0898ad4a9191b670daa12d690. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:20:12Z), 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/CH6542251555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4cd664a79256e4c3e116d57d97d5b99fa4c421167b81f9272c3c9a3b8257c1. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/CH6542277064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7011d5bd2b991db73042e17d1e8786b8ca425a3ef207dc58616afd8dc44c958a. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/CH6542277066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a118cc9c934a6f56f9f1c6b4097fc9201d6bf9fd2f1d2fdc8909c9ecb75586b. 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/CH6542404769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d95f6a796561bc318ae999c994b706b3e334102a0f6d6295af1720330e42c41. 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/CH6542424042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4684a64eb3b29fec80ed24ef4b551de994fad9f64d347a2c47a067279873a20e. 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/CH6542439125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d60afa2467489b8184594cd559f9aba0c93a748ae96817d736fe67e40e11a0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/CH6542568261.