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 0xca1accfdca172bc0e07aeb24bcbf3486e415d446c717c7a8efd9be99a44d13cb. 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/84c6c2c1-283d-47ed-bf81-fa2bd432504f.json and https://artists.proofprofile.net/proofs/artist/84c6c2c1-283d-47ed-bf81-fa2bd432504f.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 0x695b6cd0938234d14831fb61c9b074080ab6936765cfed0eb140e651b0bba6c0. 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/USSK30967001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0032fd17f40d05fd3bb9f7392d353b4808548bddc80d5a8805cf20735bca3a5b. 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/USSK30967002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e5a162d8633012c056d9f9ec7443dc2fb39fad5b6a1699774abad3b7e3e762. 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/USSK30967003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1719584a6393db36e4b09b2a56da7b75c7a591f03df0bdaf678c260f6b318aad. 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/USSK30967004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dd59c2b7103b7d483cfbf4c05dfdb98d9a39a60366b1ae9c57f0f805cddfd3. 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/USSK30967005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9031fd6c25d83f09e40892ff7d780463b2bfef90276892d427dcce2730a84ba. 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/USSK30967006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314584ec973f6c84d92794b9b8dafb82d2e3646c7a3a0d9b98b93d62a0818546. 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/USSK30967007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c29c25ac58cba258c8ae697b0e5fbcca0bef7664a7720e172f3a902d7b99ea. 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/USSK30967008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9009e6f2bcc8a28e71bc3e01b24a1d7920018e77e651800e2a66e911d3101c8. 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/USSK30967009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b659caa59bf7b8f877d13130adeeb7168df98f67bea79977ae4f6661653d91a. 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/USSK30967012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb93dc1514eb04e6725eae51ebcd9d21072da0b1b26ac92a162ab37cf20b0b0a. 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/USSK30967013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a53217f02be70f6275ca42081710180cfba9d4d6788901f7f87abf2003fc5ea. 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/USSK30967014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79e35c5ef6cd237917c0753486c1ccf848475ccab12702234cd210db53e0d02. 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/USSK30967015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe824890d66e0c7f0f717831939f676a0530807e0071f2823d5e1485a88de9a9c. 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/USSK30967020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeec935090b2213e7df312edd3a775e653e182e728e5e818ec6d2358ac709396. 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/USSK30967021.
Oh Great God of Power / Manchester England - Reprise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb611e9ea491b97da958859d0f4413501d18a0bbbf83e2afc7c2ca8c14e10e21b. 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/USSK30967023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c937caf0e5aa182e98bae95d6c0cdeb02c49528c0f23c2a6785227b6d7857c. 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/USSK30967026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b03ec2b7b1821df4f67bd45d6c15283466918f34525db11f82cdd0d334983b. 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/USSK30967031.
What a Piece of Work Is Man / How Dare They Try
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616ae75eed59f71ef2fdd2745d24c28bfe071333521a74178a4f3c38e2bfaa4e. 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/USSK30967032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10271c454ff78db9b78aea80fbc6118daffd1f5003ba7f2999281502e320370. 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/USSK30967033.