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 0x76af0c429e294f16614dd5e1332d448656ae5f36e8f3469bf9176fe541d84965. 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/268720fe-a4f4-4c2f-b4b4-315354cb65c7.json and https://artists.proofprofile.net/proofs/artist/268720fe-a4f4-4c2f-b4b4-315354cb65c7.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 0x66ae0a581ac98fb80e36126d757416340fb073ede1f56b7f8bfc5d4e7f0980e0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W12137197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb876c3d3cfd9f1c0802a8cc309be11338b70b2ae9d640588d0b3a01c025baa4f. 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/FR9W12137198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5f081f43eb1f24275f7053874680a3f2d474b5180bc56db55eaf723e41b7d6. 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/FR9W12137199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92622b4319861d0d5964fc0af8c4f51df3b2ca06f75cbd95c67c73bbb32ac905. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12137200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfda5725d5d52064e46e2e0237ab0a18fbbdb00cc511ba6b538d94c4c788072. 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/FR9W12137201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26a6452d23ca77f6fabd0ea4e91044750e60eb595e1fe99af9bed0f680145f7. 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/FR9W12137203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a7057aab3d23f54c62bc0dad4331352fae7a3c7e0a92a7990ca3e06eac5b87. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W12137205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8feee413d468f8820aa16ad2fdba44e4be5751ac99d8d935fcbd0b86e2c899. 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/FR9W12137206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2e60ba3d6f4b5a239888a114e77579f566d18f57ab85e378143a41d52ef76b. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:57:44Z), 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/FR9W12137196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06876c6e79f2b80e455aed753e0e0dc1fbf9534093f9e85d448ca356924e34bc. 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/FRPG51600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fd3d66f907dae8cb2b75fcf2f9b45f49e4e3ef84c9330760d6d7776deb4731. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRPG51600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892ddd1d564c2f85647e74fb3fc8e0d4cb98489fe3a41100d8291e9cbce6a8ca. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/FRPG51600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3988c2c06856bf3d8ff3b6d911abee5cadd02f0b3d2e6bcc8714cc0bda40e3. 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/FRPG51600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f019dc88aa4c473f2de6239524fb9332e9d25e021b27cd0d08c799b37d3ce2. 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/FRPG51600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ae7ed13789ed065dc3cee54b29be1f03a4ad495f9be3ad74e476934c59b852. 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/FRPG51600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbb693febcdb1a5272f5dc375d7f93e9d4a38e79596a49a948b04a8ab5c2f55. 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/FRPG51600120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7295947da248fd1839e6749c7a0c01a8a1f4028c00c6c372be2037b3ee1052bc. 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/FRPG51300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46e66a29f0b40468fc3dd6719a566745ae6b3c2b318cc58b5f35f30c65e0313. 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/FRPG51300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d97e54a14afc657e57581990463d4a9bae7c37755f78bf4132891e7587fb317. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRPG51300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba0f353c51ddd52b33be4088e09dcd446116bc0fb1b702681af5e85d8f4c230. 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/FRPG51300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65d818ed7bf14e6d084535d90388a8d41b760d01ed66a8cabae90cbb514f281. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRPG51300230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697a72aa9ec0db9d5d16a6b71314feb5723fde877a8c42c33a6c6d760c73697d. 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/FRP211000910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5654a408aba630b51ba85d1c3b6a6cab29f1709f46692890111dec344894dc63. 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/FRP211000970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313e2e5046adef2d0ec6d6ac31492fbefabc3d87a5e8efb21e055cb05b8e7930. 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/FRP211000950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cc606b10033e04ff4ad16070739fe69a09a5a1c2d8c8b36838bed77738d362. 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/FRP211000940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689666fc5014ad3159e2a2fd5bbd90b2da2e5b2b6533719ed8efe934129cee0a. 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/FRP211000930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80849f8d5f2ab447f9ee280f0264019ff22d7d4fd771846c2d0989c381f15075. 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/FRP211001010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d6bfd340500310b91d20593e79e875ab740b1efc0cf4e06462b49fcde35129. 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/FRP211001020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a41e8134d488749699d0ffdfa02e90a74e09e6d2a267e9759ade64c23d16c56. 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/FRP211000920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ea08bf556fb7019c466d8880894f406de361b4a4fd9193d65bce76bfd248af. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRP211200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697a72aa9ec0db9d5d16a6b71314feb5723fde877a8c42c33a6c6d760c73697d. 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/FRP211000910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5654a408aba630b51ba85d1c3b6a6cab29f1709f46692890111dec344894dc63. 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/FRP211000970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313e2e5046adef2d0ec6d6ac31492fbefabc3d87a5e8efb21e055cb05b8e7930. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRP211000950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cc606b10033e04ff4ad16070739fe69a09a5a1c2d8c8b36838bed77738d362. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRP211000940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689666fc5014ad3159e2a2fd5bbd90b2da2e5b2b6533719ed8efe934129cee0a. 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/FRP211000930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80849f8d5f2ab447f9ee280f0264019ff22d7d4fd771846c2d0989c381f15075. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRP211001010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23257b13a71756123a741b7eee8cf18b12a45663b54a08f1aecb6f2b44de0cfb. 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/FRP211001000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d6bfd340500310b91d20593e79e875ab740b1efc0cf4e06462b49fcde35129. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRP211001020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92622b4319861d0d5964fc0af8c4f51df3b2ca06f75cbd95c67c73bbb32ac905. 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/FR9W12137200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697a72aa9ec0db9d5d16a6b71314feb5723fde877a8c42c33a6c6d760c73697d. 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/FRP211000910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d09e1d2ab35ca02008ccfd0e36e1567546a97c318b576e0900cfb4ba3c2b5b. 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/FRP402100190.