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 0x081d249369ab8e2a8c009babe9db8b5b24023c84fa39d2698c05345556a1cf22. 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/875ef511-a515-4381-b396-77112f2d9097.json and https://artists.proofprofile.net/proofs/artist/875ef511-a515-4381-b396-77112f2d9097.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 0x166c02e8b78b713da8ed984737163001f551268f542b0dd959b784d03f6545e1. 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/GBSMU2675026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ad0aad4bbde0c987e5eccbcfd3314fd6b68fb13f87b956ce225de95a362488. 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/GBSMU2675027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53e20fb1f1b215db9c09792ea8ea6e4a06d293059569e3caedc712a2c764039. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:41:54Z), 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/GBSMU2675028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e6b84b718e83b2e3b7a9fab1bd0a60892ecb08f0d179ad7d631758cab54adc. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:18:59Z), 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/GBSMU2675029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d00da6fa6538ff77103340a7d3497512c9af870d6aef41716e404234dca6b49. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBSMU2675031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29157b12f34158e690f2424cfe7b8457dbe8a1ca16eaa7f87abf111a63b94495. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU2675034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a815b470cbbdcc7cf92e3b015bada09baa7f9cb448448ec9af4855f529a6bd. 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/GBSMU2675339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ff7a6df2c4ccb4e1d32da3d7c002a3bf4ea0f3b07a4c142a60ba8e707ff6dd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBSMU2675340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbf5a54e9d5ffb38852b025b961ceca761fcea7df68ba301d7e9158d6eccd9a. 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/GBSMU2675341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a89d343e54fe297ffee26bf90922a3acd023f4e6de3f9bc1ebccad8f509e06. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:05:21Z), 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/GBSMU2675342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12aac46765dd57668be415f176f510b9074543de1df557190f88ab437d7340a. 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/GBSMU2675551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5c6559f4b9b2f0b56ea7fc22209a15b9eae2d8ccbb53ae33fd096439d84eb5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBSMU2675553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfbb1e2a2d4379e599d4a02ccfc90287520a1d7dadedf9ff8e4e1dd6e087145. 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/GBSMU5928654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6567723d709e5fb26365951c2db95ab5a12f804ff6b562997a1402395c4a4714. 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/GBSMU5928657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636ae38f2b902562824b0120c82e973d5887d990dc87be62c67356308a066e3c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBSMU7595238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc769ee7635cb74d88bce5f81681a2e45d839a1676ab56dc34ac991d4f4390931. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GBSMU7595240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b45056bd650a2c1ea7da5d692ce3e3d2f474ca47323258965d5e2619d6e0448. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBSMU7595245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb116c0986ca3af40e8fc9046865fad2871bde84eddadd540a8a07f802e182eba. 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/GBSMU7595249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86515961c9c8fd4b2db207e5014a63bca0f943858d45bdf109430a296d538565. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GX89G2440246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a34b71ac0010e15d6ff77b11a72987f93aad4771d237f7a68c5bd8aed35f17. 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/GX89G2476115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803643263bc7bf34b729ef29e88f9212a8dcf5f074addcf03344149b9a0eeb8c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX89G2416352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c51de6acb92fa66a2e63eddffd185d616ba7922633cd3cafefd155fbd7b926. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GX89G2412854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b302bc0119be6f43640b4ac5d75d0673e3f0062e1be0733e6008e47538295d. 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/GX89G2412699.