1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6a6a9533b4bedf170e70e3597d9aeafe6c43f74bd80f58839e4cadd0b306f690. 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/f3c7bf03-15b7-4aaa-a025-614fe320f642.json and https://artists.proofprofile.net/proofs/artist/f3c7bf03-15b7-4aaa-a025-614fe320f642.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 → block OTSBitcoinBlock must exist at that height 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 0xaa2376d6ee17a33b13a4972cf32cf03b1eeb903ad584e188bebfc16179806ab2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHZ32151017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c5131e1629c4d204e3108a28e4d1cd3ed876892061d67e36a10ea3a8ceffbb. 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/QZK6L2258987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d7d436153a80ef79cbc5a59b90b10ef0b1297656ac0356ced9f9cd4e5b6afe. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:30:48Z), 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/QZMEP2252783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4ca77022d8a68444958d1703cf3ca9d4daac7d95b6207c6acd1e8f84c89a08. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZRP42230036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed650b31da2564416eccbad22822e37f3afc1ba4acd24a03fb3331ad5565652. 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/QZDA82393797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21beac9857847a58ab057e930fbff8cd36eb2a6aa1351a9bdf36da8598d2bddd. 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/QZMEM2246012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e98427036bc62adbed81505c908c1eaa025b87c744b4ba7869d68dc33643c8b. 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/QZK6H2312152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eadfaf6fbefc0c66c48c4072d6aec7ec807ea0d518b551d3833830272d30bce. 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/QZK6H2312154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bae9000dcc332c462421673c512bd22b67ffe848bf332bbd5b863b5b751c6d. 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/QZK6H2312155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2fa90ca51301e08c25b9a14615c3b6fc0af533da3ceca220bd318258e85e45. 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/QZK6H2312156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc018bbb1d3db163ea30744a1c1d19a9dd8d3a358f946f34664152ee4410c566. 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/QZK6H2312157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1926df4f9cb351879a1b917153f2512caf18ceae4dba8031b94210d72977262. 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/QZK6H2312158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7779e91c11455c79332ef9a1c3becf42ff5feca8d07f7c0d7eaa8bd5ada7786e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNWW2335929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5ce9fbcc5d54eaecd8056b4fc3dbb07b2d10df726da68f7a9417251f9a9c16. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTAT2399233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6081a6216e2ee9ffc793b0800ed892933dde0ec1c9450b15f056d1076dc3cd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTPX2496719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c518b41c9e39a76b57c90eee81cbdd4041e05cfd888600bae3ea1b476fb70a0. 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/QZTBF2537768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83070a8286d5d27a8c7469a1a4bae8e74229c431028e444736ecd6d6158d5a6b. 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/FRX282404766.