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 0x484e8d1e0bf06679700bff5174a2cae7c039e19bafb3a0795f0425e309e27a49. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ab0b41e-7fe5-4631-8ab1-e76826a8ec05.json and https://artists.proofprofile.net/proofs/artist/1ab0b41e-7fe5-4631-8ab1-e76826a8ec05.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 0xda4e45b82d050cfb8c2dc5f2652379c3dcc3b55631bbe359ae7e97491bd1b3d6. 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/GB5KW1903248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b17686b04d9b7421f6bbd553eb923828a5b8ddc14aea79db8ed1eac2151d09. 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/GB5KW1901292.
All for You (feat. Karen Harding) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14e15aaceac339cd7eaf2125cf0edeacb624c7027eeac1f6b28bcab18d763b9. 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/GB5KW1901448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ba13a0145e3fa2f0964134eeeed82622838c4614302ed40bb40eaa8e12ba29. 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/GB5KW1902899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c02e719d931fef83de09513b4ed35b183bdb6ae280693c0b8bfd9c5d5c8b35. 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/GB5KW1900334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dc119052bf7e42e13f4d76e8335c62756b9eca76f874b02d5061d9a163c795. 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/GB5KW1900892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ad65bf4cc20ec25597df34601666fdd61f9e503148a0afc42f16c3d0692476. 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/GB5KW2105165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac695395553c49e813ef802f73f37e76f5301efbaa86f9484bbf972cb227a435. 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/GB5KW2205639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e592bcb388f6aada66222662276ee1f3bbe1174d80755eb5adad97b2eb30bf. 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/CA5KR2459528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5886a49e8bd832760326db7427f531bde157677e00959390a03f70626f43c7fe. 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/CA5KR2189140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e953ca11cb1aca9c06e61641534dc4f228502346872c2b0e372c852f38cc85. 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/CA5KR2063356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65c3ea7f942666810b9af9bb098fe29ce3adf2caaf1b28148d1d6764d531090. 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/CA5KR2063353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6277d19a118418119426ed4dfecf40e2410ef9137c6f1d637ba22ed35e5beea. 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/CA5KR2063357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aa29df3e6e26e0845ce4b77a90d84fbfbbe0124de93d2d85644604a073bf70. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/CA5KR2063362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5259d9d26174157e93a48b39f51880ea7f57499948543379fe14281e8784d42b. 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/CA5KR1922173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f179580913160027f4b0540d152d0c7018e8b21b391997ca81dc1384c9cfac. 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/GB5KW2203580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687bdf7dc16790991e5fe3f2f2b9404ddc1a50b4d278bf1211cea099812dd321. 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/GB5KW2203588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6259ba54d2ae74fd8fa69eafa59445fbc7146ddee322e76137582fd1ed259128. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GB5KW2203583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ef7a004ac7236590ef8375160e76c619e897b9d4ca951ca7690d9f1f0c172c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GB5KW2203414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a64571254b81e49a238588c86059b9a8a031c1561782f5bf623671c42fd76e. 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/GXF4S2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616918090dd00d57f0cd3b70ad98806384f56bde438cdd9ad76d4d80270697a8. 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/GXF4S2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f77de65a3fefe7c8478f08f308d7e85d79d3da3ef4de6278aa6e61897216626. 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/GB5KW2303902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abd7e8a2b02fa4e986ded532360dcad1be0f5a45345a2a5693e387c7aa8778e. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GB5KW2303903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cb15d7b589d576ceb41e4c5d18aa3fce75ff6571226d770f83af4c6011798e. 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/CA5KR2324110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89a3e79a2320bd6d3ba2d35921b0e70c268c435bd63edba47868aa9891865d7. 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/GB5KW2000803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc779b3ceb36f9e19ae00f5aea10d63c5460f184f0edb44b1f2a377709f05c013. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GB5KW2000805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b381d230cd9e9e622983ba4e3ae4b07f64e283156ae0f628bb0e79a9190793. 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/CA5KR2264994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b8e0b55da44900bd351c1fdf7fa50933349e2fac7271817d80de87761d15cc. 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/NLCK42421687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6200699344b421a14699548093ce4e62812233a08aa44f87cb8819d42768632c. 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/NLCK42421689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5741cb2cd62c45a407330fd1600d6d45c87a394dfb5809e5a555d13e9016f002. 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/NLCK42421692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59acea06534659ca7ca006fa3791c21e79da04146f70258c63adc2e7e50c1d2d. 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/NLCK42421693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa029fd08c95d5176309d0344a986343e2c3daaa379c9bf65247663b1813bafc7. 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/DGA0H2482421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a6a165d07e522a6b090a5cd110f5a54cbc89a5a9285eba1379863bb56460e4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLCK42224567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a4d6095d7900929d0f1bb51ecfac667eb5bc9c8c79f8b3078b125a2e3aad5e. 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/NL5PP2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80189c8842fc4c5e4149df72cac5aabe4fdc477d6cd6034ca98644074ce9dbf7. 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/NLCK42230596.