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 0x6758d4455c8844be26d3d40bd2dfecb1b0d52897d476f3bb076f09c40c661902. 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/460b61b7-c923-4eb4-bf6d-9006ae00a48d.json and https://artists.proofprofile.net/proofs/artist/460b61b7-c923-4eb4-bf6d-9006ae00a48d.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 0xf1df87d1006ddaef4d19a8fe173b895426abd36060fdb84e50a618153bfd99ae. 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/QT2JQ2500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3279bd2803ad412a92dc6a0996a74519c40ae62b4f3348e1cfff6f43058b53f9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZEZZ2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f75bfbec42ae2f66df05edc058706a398c429138d3bd5913320d8c34d30af5. 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/QZWDW2466769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecb26a91502ba1bc4be82d4532bd204a1bc3c63f1b3bf971b766806f8f4b306. 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/QZWDW2409818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda48be7410389dee353acf7752a59b433d518f7053d97eaa7dd875d6c918123c. 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/QZWDW2409819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e400e23af82bc6dcbd630bad73dd3ef0f990a7cb304d6062e9bb3dde7a318d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZ662476089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992c7c719e0ee861d1a54eaf1844da2e8a7d0f5744fb6fd21b741decfdb00a12. 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/QZWDW2409820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e87aee269bd3b43f9ec01f9af8af5e82ceacc0953eb58593b0fb61cc06459d. 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/QZWDW2409821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30e8446922ea6bb6d9ea08a54eba1446e86fc8f45a409535326e54b260638c4. 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/QZWDW2409822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892b3dc13f4c3330388932ad3f59251ab4dcd235d5354681f238e4cb13432c87. 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/QZYFZ2422922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e400e23af82bc6dcbd630bad73dd3ef0f990a7cb304d6062e9bb3dde7a318d. 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/QZZ662476089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bf48b9403e238520b1588624d5de051589b53d694da03f29759c744fadf134. 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/QZZ662415736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d4ef76decee0043291570b80d0905949b131ca81491c0274c7dcef9b571c95. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZ662409148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb5cffaca6cfacefd3225ff9217f0d92a2d5ac2af14d318bbd2308921ca037b. 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/QZZ662340599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f0c89848002d783bd902ba2c23fd5b95c04a10ac8d1feeb8938cadb3cf7f72. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZ662340602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b9212a206ddf05a9cb471a58863efe22a12acc48bce15a3b2b74a457e8bf6d. 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/QZZ662315989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fb4944ad29397bceaeb2c9bcb378b0c24062171bcc813a2543d593eff52a61. 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/QZYFZ2332910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc783ff1a6a69f56de9c2455a7b5effcc06d1d366010bc2e32eaa29e6b3b3f314. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZYFZ2332912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb7322e4497d89f07d180445cfecf81dbe61b13ad756365243be189581c25a3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZYFZ2319509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9601f7b28e8df545007dc821e80adb468e108752a689eff5d8435e917a298b4d. 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/QZYFZ2303657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb3f0cd286d4ba505d4160307c3d7ff7c6519d771ef2cb7dc0f0409ffb106f6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWDW2388512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c1d2f38598454c7f4c1a4fa01bab6f25186681f0d0b2ada86236198f3ff1e6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWDW2339578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cf962e7b650fa8b7fa4b44ea414774684903b1adc6acf5f0dfc7fd243277aa. 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/QZWDW2338653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676d148e9c66651fad8678d34baa7445f56fb4e4a8e253b9a14ac51e1c7fd8c8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZN882362477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf753778dc5595e32fbacde14239aa2b8540ad8e69ae0bf630b967234aebbafc3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZN882376959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fabe1c141bd7af66a707fd658c917763f079ff49db15f9813d43a85cc09a52. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZN882376960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede27fa4ba0d552923e16cc81971d2cbc7babde5b0f7ee6fa696ada01d3da449. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZN882376961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676d148e9c66651fad8678d34baa7445f56fb4e4a8e253b9a14ac51e1c7fd8c8. 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/QZN882362477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8b00a62b2f6801b56adbb63c9140a6017b6e259f17498758b59b1d04fbdac9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNW72212543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1211df6cda31161c5460423dd801067e40a1e01c6ca7dc89f9fe6cd3a2466d90. 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/QZNW72206218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6dcc3daab504d8ae0ceb63a8a2fc9eb3daf1c7c524cccf694aed891257d587. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZNW72250615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c7daac2522cedef1e214c808b8bb75b9efc7b56420dad5708456f0daf297a7. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/ESA012220074.