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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25249076348783a98770a8bb3201c85412856b198d13922d8da96c24d7acc0d0. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f51c7d81-adfb-4d3d-a92f-b6a706266e69.json and https://artists.proofprofile.net/proofs/artist/f51c7d81-adfb-4d3d-a92f-b6a706266e69.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ea644873ff7482a13b918690de69c82be667ffb9fe86fc0081e4284e150587. 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/GB8KE1855880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e0752aa955677cddd2f39429bd17f5ce45b4f0741754779bea33d172b71aad. 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/DGA0M2335201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4133e7849791c366b3fdd40176a2cdb73f35314c66b559e2cc78badcfbe1fb20. 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/DGA0M2335203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b17686b04d9b7421f6bbd553eb923828a5b8ddc14aea79db8ed1eac2151d09. 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/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 0x836bd86832132516223ded6699c17d15728e6fdbf3fa2786b131d442e7988721. 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/QZN882403302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4770984feabd76b3d0b4efae27aa17d941e44cbd3ec2671e50122d2a27cb6d49. 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/QZN882550900.
Nad tatrou sa blýska (subtension & kajisko rmx)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2544949cf7eeae7124eab97d427fedc1fa9034964cf17157c624f988045ff16. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:14:52Z), 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/DEQ022107649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dd3fa8c1aa6b14e2d396a7efb067baac837c5e286b95ff1f2238be21646c6f. 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/FRIDO2010401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ee19e9ef751dd5351ee5c13750b721dbdb5f1897daa1a806442b7bf4c6e509. 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/DEQ022000837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5213cfe441499f0455206e8af102aeef7280afd587ef19384bda8afccf46b9. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:09:54Z), 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/GB8KE1759009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778c812c50cce291ec8fdb6cde218811d8f14ca69a4da65a36df8f4bb27f87e3. 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/UKU932290025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b070d9dff18fbc99b3b9d2ab563817f6491066ad0d484723df35e9a9d6f7bf. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:21:39Z), 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/UKU932290026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfafff5678f38d162806c1a3d280583281458b94e158aa4994a5f03035d6b01. 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/UKU932290027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708d179cfd39e9ee8baea8ecf60132eb342054730569286054fa205a9aabadbc. 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/UKU932290032.
The Storm You Can't Contain (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed30a3310e9d172af0208a4f40e127bfa59208ba431631bc07ed01193640568e. 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/USLZJ2039503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3d36df25763daca713654adb26e952bd4c6fadd3bb50cbe9d1b91bb73fb511. 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/QZWV32395944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a503764c6ac073de1b1c375d67a8cca97961b1996c897d6f969a0f9391ab7cf. 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/USLZJ2217730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca42e33ba970443eadcb39d72359183b332839f1aa87cd9dc62e2b56f924c2dd. 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/GBWUL2186104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43d6a18bbbb3bf01557f840b89dcb7bf7441f5632f7490bddb0e0d9f4e000ed. 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/QZZ8A2371221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaba4ce211b1e91a089ef08fb2b563193640653a4376e7390c19486a122d6595. 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/DEQ021800587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e26005aadb7d1328eeee2d2b730e7d829acb509043693b2b1c266f30423c82. 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/DEQ021800589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cb6bad912d47867156c7f0028724aaf49eef8933039135cc0bd9d037cea478. 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/DEQ021800593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c2c68047a286a65fd4070b10872e1727bfb43b697857c58ff31687d6710495. 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/DEQ021800595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fa48ae0f18338d28f2aac4aab0ee66f2dc1a3c953452765b025b7e9e358713. 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/DEQ021800596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5634e70c5c9e035e4223de1a1d1474066ac2f7a0292646306ccea33845d5da1d. 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/UKACT1830329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d8b9b927cd9f73feefca686af12d283690b894f7d270c4fa7bf1f8a9818564. 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/USQY51531042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6b24b534aab9e6d57a2394fea8de940423b00d15d67449a28c1f576e859672. 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/DEQ021904442.