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 0x9ebafb4a3881ab37dac2f738ad31f0567acecbadb56d59ca1aa1bcd2d1b4a246. 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/20c64694-67c0-4535-9538-32e9f3062ce1.json and https://artists.proofprofile.net/proofs/artist/20c64694-67c0-4535-9538-32e9f3062ce1.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 0x23fbd13f5ef99ae77fcb7ca51e0ae54376aa396d39c04c18adfed150e74006db. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBSWG2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09022c959f510329baafa752aa56319ec09b2160060317abf2a2f6dc349eba8d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBSWG2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14b35c9cd216a8049cd6d6977a6df7f10f7b75fe61d62ed6ddccc4b02f2398e. 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/GBSWG2200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275aa68a46c9e20922e1cbecf075c294c20322e0df536e0119249abe2e74d4bb. 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/GBSWG2200048.
You're The First, The Last, My Everything (Chris Coco Dubs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaa085193315551f855ef84a177e9fa18634b6a14808f4b0ba7d10a55cf5366. 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/GBSWG2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c956d067d5c892c3f7124af0d509a9169ed3e9730f5fc525915af10815b7d8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBSWG2100016.
You’re The First, The Last, My Everything
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a1402364488efca19828c64b134ec35d8c3d336997a6c448937b4a0f883362. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBSWG2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3162d02d4c5ba9e151816d1ca5eec72abb4576d6d5ae8bfb197b66911c46fc69. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBSWG1800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5532b0eb1de943bd66a0adfefb670a94f53f62628cdb4a316b4d1bf29b8306c1. 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/GBSWG1800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ceadb9ff9bcc26cb82eca4aa4856942c68a0853bda242353c4cd33f6c107cd. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GBSWG1800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f04fc1730c267e90a4bd09c90f05354cdc5fa3c01e1614cba33b49cd157ec9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBSWG1400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb576c4a36c59b77003306c10e030b3447ed4e7c029b9d7ef58df3e1431923aa. 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/GBSWG1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa869fbb2f20d929a9d8dc93d937b06167c708944ee2bf6bb42adeb962afda7d8. 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/GBSWG1500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85689a2335318c13e1cee1b2f0718ee586906062896bec064fc1fa62cbe753e6. 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/GBSWG1500029.
Sambala - Leo Mas & Fabrice Balearic Bossa Dub Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b22bb34ed79367a225de14e368a118605863d8988cf8baa78fc8fe324341aa. 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/GBSWG1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aa62957149d601782b43102ad4522acfd3f9fb359784d0fb828d54ef4d5f60. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBSWG1100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fbd13f5ef99ae77fcb7ca51e0ae54376aa396d39c04c18adfed150e74006db. 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/GBSWG2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf260ad99bdd8a8ba15d3d22e82bd0122ff747f1a554f0fca8ce0ba350a630be3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBSWG2100008.