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 0x820f689cd2c29a412dcf5124f2615ffdb0d63354b191e1563a46161f587c3b69. 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/af8f3225-e838-4bfa-9b63-80fe01b9357e.json and https://artists.proofprofile.net/proofs/artist/af8f3225-e838-4bfa-9b63-80fe01b9357e.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 0xe2a937756c67cb59c9e42c2aedec9f767fa6bee8b6c43cffb896a61150aac096. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/QZFYX1994108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b0885344f9b3c80f14c0e7346bc11206c5905272016c4c05bd28a624bdc7e5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:05:56Z), 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/QZK6L2103029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ff7aa8a02166131d752304305336f450d61a1aa291da2c0321260f20daa8ba. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:04Z), 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/QZK6L2103031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0d4b49d88997590e33cf8f948389d3b0ab8634292e77b75052268f6e0987b5. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZES62203121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee44e3855596f5de65338344946a76d620e3c1624badbdffdfee5fd56bf88ac3. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZTAZ2275385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f132bda1c63b24f79fc6dde605a831de31a0d635f91ba5a7b9a327656c6d78. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN52338926.
Monuments (Remixes) [Paradise of Yesterday Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848f5b6189487e0888d1f2cb433e35fa39096691d416b64bfed3d2919fee885b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWDW2425336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dfa14885ae932747dab6a765b569fb7c5ff3e3d0adc4afbd50c6c856b2aaab. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/US83Z2505142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132289b9bbe3b1a00a763e8ce2c4a22799757f95a75c9571534f3f121c6976d6. 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/QZHNA2511641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fbcbee18b45abb01d81845548083d2a11a53902986d8c56131fe959c0c6ebf. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZWDW2511134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb380005680077241fdffd6a2eb487e553c4737cbba8e59a79a00ca2d5c9f1bbd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWDW2511133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66ce2ac54dc20ce977e06a99de6d3db17f4b9b09e9171e7035c16aad1d7b32d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWDW2551044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acb579a53313e7a015724b738f5eb9f159932b88f456214f06201c335bc0376. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWDW2511132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01398c3ce3444e984cc85dfa1ca423d9be6016589959e3065e3c094c77554fb8. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZWDW2551047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603655460f10ec92731ddcde7a3e7c509cb38488aa7957ef9a29a1787435d44f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWDW2551048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65739c4aac9acf380b7f03156b6537064a7b49ca568f780451e4742ad9250b02. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWDW2551049.