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 0x283793f248729c5e202568e9d095dba387f9fa930b4c97fa0fa793baf80270a8. 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/bc1d1577-05db-40b0-8fc4-66789da577fc.json and https://artists.proofprofile.net/proofs/artist/bc1d1577-05db-40b0-8fc4-66789da577fc.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 0xb8198c40b7d9db756b3be781f975fef0d05a7b8d3bcd242b7eaefd2b1a948f8c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCACS1663688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd166c2d7a9423f430f024e3cbf6ea12083f3deb9fee1d2647fa4db7c7b119af. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:08:35Z), 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/TCADF1708508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47769a4e1d26d65c3abe7adccb8d52096fa9d99ff08a1d49e6b3e1daa4642103. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:06:37Z), 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/TCADG1758969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c69eba85d3f3594d4e555b68cf1a90fa7076b812ef5730a3f2f4143763b11b. 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/AUBEC1813822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dc7e9d01368c4c024ab4abc734d6f8f28c24e79c6f2926cba22c3d36728d1e. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/TCAEF1940602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9078a5673425bafe0bde7ee50c09143d44817bd6c8819ef85eac76ce65e6f40d. 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/TCAEK1996944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3e7430895a1e581a5faeede9d168c94eb7cf7da4dd6893b7c56de82bcd863e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAEG1921686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad05e0e3b27f359d3c7148f2b6d569915745d452824174e1e75a668f5018944f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:03:22Z), 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/TCAEN1984368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64130a96be18458b3947165b77fac3d2499384e615a0c76aa5f1b7dff51125f1. 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/TCAER2040727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb690cbf2a48bf60f81d039b4417a0e72a72fae9c2c4768c6ffe8a16ca54ca6. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/UKRVV1900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658815d46cd46fc656d7a19a87ccc170c73662f2a49f4e9c2eeef86282a3bcc0. 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/QM4TW2140681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe920889c465030ed69df63ced495cee664dde01ae06a9729175a3a73936ebd61. 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/NLT2H2200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aff1c9da82761a5d3fa30fbbcce976ed63d5e016afc44de35098e4ee1e280f. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZHZ32226326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91408138b56149df490ef785f7aa0dd573b489bfb15d64de3229b0ab2210768e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QMDA62250765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe81446d48b2666a80190e5d5764f24bc48d1bf5e8769e0cdf83c96c66fd6b16. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GX89G2327196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a16c44b857341c13358acefeac7336d8b21f19008f13ad221fed2b7687429eb. 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/GX8LE2312742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fdb88a417caf96943335c70e15be8e927fd36289c16d5daaf6d8f54d5d7c64. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTPX2343944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb77f8dc19d2b0cd2b20aac7af436c3502d8cdf17a076c698ce1b9c3dcb7f05. 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/QZW9L2309895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8026d015f732aef7f18de201a42f7b1d670974d03c7d2c9eaf7ea3d32f56a437. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZ5AB2410064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7bd07ab1079f8cfea54a1c0f0b082260b86c90474ef549a5e6b44f7cfdd095. 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/QZW9M2332440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489b576041f17b4c1beee2809581cf5de91f20ca52783436005bc01df1a49b7b. 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/QZ5AB2468116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675a94c2c0d6ab131aee40692e3db3354b1159b6cb2be9b60865b1553e842daa. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNJY2430014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f31cc10f21e8e597f0a8b0d940cecba8545dcbb6eede97d47a9d99c7e53d91. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:34:49Z), 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/QZW9L2452015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f390e9b70f47a9d81e2f6fa37739bc7c446a5a1fc5cbfe014c96e711f90189. 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/NL1ZN2503417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99fcf636305cc869a692688895cda38d7e8971d185a9c04ec0d05b2d09f617c. 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/QZNJV2591414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8472017f9e601539091b8a77ee7ec827ef96745729d875b4579b309f51b8b8b6. 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/USSM12002468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301cc37352bf27f15a394719e0e86e52b7ef232ed5bb558d8f883cb4c0ef0e4. 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/QM4TW1789578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6aed5e02e1771fea7cce57b6e408c96b77bd57397808a03214abc6e04615886. 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/GB8KE2205062.