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 0x03e612bf52ed2db46dcc395312ff84c6c8ee4b0047bcdba7e2c032ac5c281ac7. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54c0fa46-a705-4f08-ab74-853afc546468.json and https://artists.proofprofile.net/proofs/artist/54c0fa46-a705-4f08-ab74-853afc546468.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 0x67e68452f524dcbd32caac3973463a7198296edc2ae0f6952911a6acc8dd9024. 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/USASN2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1132734b7de1464682bcc3dfc66a0c45b0a19e46606239b71dc7fc4cf11bbc10. 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/USASN2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab33479d3752fdb63f13d69a07bde14827380b10866cf9fa3eda55669c383418. 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/USASN2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d74b8d955e4795b9873095ec53864fdb1d261c5a0548a4449980b3027774d6. 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/USASN2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671d9939b1c0ff130bd30a9ae2a349a9b32af3637a5b714abb8194bd033393d8. 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/USASN2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6362adef09160f4ba2ba81d79814dbbdafc9a127a5f00727deff72f1c380142. 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/USASN2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976c2a6610eda3f94dcb956bc6ea9b495c1c9547c406661fe6d872dc8ecded7e. 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/USASN2200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf926d039136d4a42c423c8ef95a5e308e923509a0da1f6b3642fcaabc48d0662. 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/USASN2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce042a488518df9793a235b5cf182a2d556f8cd3f65665f9c7484470b743d8da. 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/USASN2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca60202b5a925db7d49c5443581477dc3dd3fa94b3aa2554ccfa0c959fc01206. 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/USASN2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a08a1de99310743b7175753949b028f10035c7f178b926e1a53985116f5e5b. 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/USASN2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a76810f9f965e1d9c9d66f58108773349950cb02ba21a5eb2cbc5f1b5c589a7. 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/USASN2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172b4d0c93f2855d13b436e36283022a28add61bfa77aba55bdf22a8242bcf9e. 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/USASN2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e50260dea61c9bf9fb9c9557562c2e4019f283d1bac4f042d76a9e76db7ff7. 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/USASN2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40695d0971a5c2e359c0fbe5130769546bb9ce56269393bf9e4a022327e2d4b5. 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/TCAFC2087465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9f99a6a6c503afc8f4b4a316054bc22996d3daf510ff555bfc1c67c3c265b5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAFC2087490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c6e9db460d70d2f626fc3394ad3ee0c8baafbcb073ed4c8d1c677fcb12159a. 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/TCAFC2095027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591dc2b79e829cf553e0e24211367ee634ebcf1fad0a4a5959cc2192bf104d52. 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/USASN2330113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2f02b9c7f46ac3c6868544f51d41f3439f8d124f9de47381dc18ccf8f3cfd3. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USASN2330117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70f5806fb003c2a83844ab6e7e151bf188c16c410c1793e5169f00ab7591670. 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/USASN2000543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbac08ef53b4617c0ed57fdddc63518a486890760799cfd7490d7cffb437cab0. 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/USDNB2474411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3449ea6bba76df2e22cdf4db1d78f652889ccfe1a2e6511452ec338a2bf5d9c9. 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/USASN2200555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1232b9e30b776e1aa672cd0f9ed749094d6f5d6da94bb458656f3dfd37ec6a. 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/USASN2200458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f17efcb6b0efb3232cebf783a2df4972e49433afab3b511633335d9f98d0d70. 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/USASN2005243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383b9f4f36cada5c0aedc1d358cd169cc69fa0a4336487b27852e4a2c3c66cd0. 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/USDNB2474902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbac08ef53b4617c0ed57fdddc63518a486890760799cfd7490d7cffb437cab0. 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/USDNB2474411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b3cd0a30148b143a8ffac7d3069885b5461312e7ab50684fb648cbd30b6518. 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/USDNB2474851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6742c9e649b7d547dac1f8f5e41dafe38eb497d90ec75f14a2c2e75058644adf. 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/USDNB2272711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b182ff809de4c37356fc954a6850db657b906fd7ec6e101b37a8c69897defc. 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/USASN2000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb65585fadb5f0ee271a5cd2b527d4337001269be0a19478eda1d4cb6fd67a9. 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/USASN2000235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e38a47c871b5ee240e0462ab5864936ac0719983899a70d8323fa55fb778ca. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/TCADL1881560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39b4277b60c5fa8fe0245543c68c428e2e37d7832e0f99cd53e304084978b89. 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/USASN2101789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a7399a1b5acfc86a2a2ff311f5055bff458650b2b121fc5969a58b67f4fb2c. 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/USCGH2054459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1829ac48f46c03d6244ab2260fce404d2a3a6b33258ef67ab4e919771f99b3. 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/USASN1901302.