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 0x2044c1e34aeff28ffdb9d3a48c226d3633a6665bcc28f0a594142435254e9093. 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/81ed2740-a237-492e-a351-524aaf141cf4.json and https://artists.proofprofile.net/proofs/artist/81ed2740-a237-492e-a351-524aaf141cf4.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 0x3df8fbb17c1fb6432375167952216f294b8241caf1d634e36d39770eea404944. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/BXUYR1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe277177cbf38c016d2dcddf34043bf1df441c00daef3fefa635f7b23eacd4c20. 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/BXUYR1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a9abc66671cb3501ac6ac3a7722836031d241d19ce5764aea8d516de455a68. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BXUYR1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a83f6d0e517e97fe450464406a5a2c03ba64de5505ba8b45e5b0558c5d858a2. 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/QZGWX2048257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f95755d0c797ec25ad2c7fabc8012b952db636e8666802d8f3be5a0631b8646. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZHZ32294542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85f864f511671dbe3be3b35b355eb228c7f5d32361be92881f07df71c037c09. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:04:19Z), 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/QZPJ32207355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f42fb678ed0416a98935c47f42840f353384dfbc08011c6338e60ff35dee770. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:11:32Z), 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/QZW9L2226173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4a39eb24971ffe99e4c5f8ba73f47f18c33e5e29aa1ec44bdc7baf7d7f96a6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZPJ32217729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d539c83153bf6873d973605204f02ee3b16512d01c4c9834a36dac5307a6d5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNFJ2210481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eabb86852eea6f080dd997c4c31803ec0d86f349fde15c222e9f7e368ca476. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNFJ2301764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19e187b09b39edc993d692f6c827659d4ed4db938c564d3ee72dd1592be7216. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZPJ32311767.
Dança de Avivamento (Mauricio Cury Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dc0f0a97aa8473a0e7f9e20375b9b9a63f3a19b79d480ddaf88ee553e0cfcf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNJW2496911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509ecf72b2482fcd769842020b37420d58c8c1aceb30af1d0482c0865001af57. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZPJ32384688.
Bênçãos Que Não Têm Fim (Counting My Blessings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15cc6656e25302f64b93c1191d270d8f1e6246740c70792fc5be612ad1665b7. 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/BXUYR2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920d2553146126b0294f7a561991976ff53499d4498d30e91d674594964ca46a. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZPJ32436832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe574171cb42da566af2c5a157942e0a5178ccdd2aac2e03471c34e070552eeea. 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/QZPJ32442574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6877521ccb4227548d7c34225f0e8b33a63e496ad28f097a655423a94bcd4b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZGLM2552294.
Rocket Man (I Think It's Going to Be a Long, Long Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6ab9b7e4d7e6eba3c099832a9ca0d521b15f2479b2ef4d208b50605e1eba84. 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/BXUYR2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aeb620939f304d03eb2b93ef807b419aeb276821f861cc5825eb332e31f0ed. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZPJ32512147.
Stay Tonight (Radio Edit) - Mauricio Cury Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6ecf27ea5ed8a80ff6dce822f68a763e3937568920d577cbcc65e057d7c943. 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/BR1H62000081.
Don’t Cry For Me (with Jason Derulo) - Mauricio Cury Remix
Don’t Cry For Me (with Jason Derulo) [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fe1ed411921a5f28ce172d2769dea41e05b859a250211d11a6a2d2c413e8b9. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBUM72004423.