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 0xe3e8e58f19a7afb55adc3eb2390af82f63c4ce582edb094098eebb64e0fd029f. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e964bc2-1dd9-41c8-9ec8-9a0b487dd910.json and https://artists.proofprofile.net/proofs/artist/8e964bc2-1dd9-41c8-9ec8-9a0b487dd910.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 0xb4d177f84ec6f4f742feaab70e1359f6e8eb6d12a4e6c9873b4c91ae4bf8d78f. 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/USLZJ1615457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a166a07b58ad493717b92a837598399a4444330d3c026af09d28902430083cd. 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/QZZEB2378180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e8e589c2a2861bdfc0ddebf30f40ed51f9b4197630d63714fea5418e95b63d. 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/QZTV32478765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf1cd43ccdb9ddf1d21de1168032a4106f6b56f43412f2112cc3d9ef0f7de14. 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/GBKQU2426443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f53a079b15dc09b3f76d1ac45d4627b807af58ff653b0f1885fbfea717f6247. 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/QZZEB2474158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe375e1ddb8775918e1de314b45a5a97a0350b5e03030ca38633dcdd8a9c1cac4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZWDE2490135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7872e853db2b336b8b3cb526845c7f15cd7a67d3548d0eba3b5c521e260868f7. 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/QZWV32410802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d098d22429c0f34f4b49d3c4454e45c4e14cc90d42fd202a85f6eedd56aa66b. 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/GBKQU2527485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4215cec534afb0be787a713a9aff2a6a9112b664a246282542286de006c765cb. 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/GBRKQ2597437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ea70204a4df3858b588cf6d14269c2ee48867bbc083fb3ffc6537d1267e705. 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/QZZEB2455176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1492fdae3a829ddc2a5b58cc5aab064d806d13737a6dfba99744b3306dfc44. 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/GBRKQ2428266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fdcb31aba9f26619ad65c029b46f49c05fef507b58df58e9f6e6ea1d53f54b. 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/GBLV62309758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2112d9f96c3ca98f9f9ebcc82b86f6412ab455e7694f488fd2bff3f5102ea391. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US3GD4512235.
The Sound of Drum & Bass 2016 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1889c0e49d32c63ebddbd3a46eec9b7bd822c94fe4febf0c80e4a7416e5105b8. 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/GBTMZ1600418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a34f46e92b18d1cf45a7fe5060f41e0ba4f01e61ff72b3533157d43299829. 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/GBTMZ1600420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe83800e6e467f79abcebee4728b3e5e2c92abbe3f7354f13bf69c8bdd88ca9. 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/GBTMZ1600422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9610ef311bf367c209bcdde9dfa9fcb80e39de7e41f32bc1369ab5a83b82f6. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZZ8A2487895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58975852f662352358ed867c86d8dd5cd18141fa933f0c65d00b3855a6d55dac. 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/QZZ8A2487896.