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 0x5cfd48768761f790b3575032f0cd267cfeb3f0b7023c70f16bdcc06ee1dcd67e. 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/ec99510c-cae5-4561-9619-80d0276028f6.json and https://artists.proofprofile.net/proofs/artist/ec99510c-cae5-4561-9619-80d0276028f6.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 0x1bb60d2f9772dcc0f6e4bf0b9fea5cd3ca1bbdfdeb1216e0e0716cc0733d3b69. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGJ2127363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd79110d7339715ed06ac458b8b066ba2808165a32d57f9f67902b9234eafa8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USDY42198437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd79110d7339715ed06ac458b8b066ba2808165a32d57f9f67902b9234eafa8. 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/USDY42198437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0779029fcf8589b22442eb4f6734f037401acb685a2fccaa0187720578c6a088. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ARHNV2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ea91a08c1fc539bb56c142b9a13c222f3dd7c8b7a4f0232ec57c08d4236662. 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/USHM92239234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a429860b5b4b0d6a1536ff3fdb24232525f474bc869adf09e5f43936c829901. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:49:56Z), 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/USCGH2352598.
Three Bells a Minute (feat. Andres Alborok)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dc4b78cb13c49bc9b4c8943cdd7c155ea5be05ead9c31c7093cdfed843d271. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USMH92304944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac4681906040e5f6c78ed09d9643c6c3dd5ffd3e268f24aadd7f9be9aa6a029. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USMH92351331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac4681906040e5f6c78ed09d9643c6c3dd5ffd3e268f24aadd7f9be9aa6a029. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:45Z), 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/USMH92351331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1825f3c2a842d5a82aac9c3c1835ebabda4e2b13dc1399384dfd779401a5149c. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USCGJ2473018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead1a52fa93819f5cd13c6f34325384359f73f27d9050b43e8ad13d5b34a61b3. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:56:12Z), 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/USHM92466911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69be673fe7f793387fa6ed771e3eabbf1864891c2e4c2734fea11e7e07ce6d0. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:01:38Z), 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/USL4Q2486289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69be673fe7f793387fa6ed771e3eabbf1864891c2e4c2734fea11e7e07ce6d0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USL4Q2486289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0119f7304e26f83052965ebea950df807fb986643e1f5ba166c30e0a130d1c0. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QT3TB2402764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0119f7304e26f83052965ebea950df807fb986643e1f5ba166c30e0a130d1c0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QT3TB2402764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2d998d0869515b943234ca3b680dc2c1ff24cf11e2423f27b281b2738af5af. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USCGJ2556251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd324b483dc8c3c6dc6a93a1f3531aeae8ca5dc4d0dfddf4d5755abdd9083980a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:34:51Z), 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/GBRKQ2538272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977dd98e6519ca3dc43f4fe3bce69252940a3ab1ca69b4cb11bb9f27a47ffb6d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/UKZGC2503932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55761eef24a52ad83e33ade9feddb781ecf25f8e5e0414d6d21bc09bef312a4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/UKZGC2507750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fb2a0896ca57e309eede6431cd76711fedf7c4c133a6accc780258bb2e9a4c. 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/US6QR2500034.