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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bab6aa83175ecfaf4a4201918da73ece7660945d69a8856ebb1717751110f3a. 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/ee09c460-f724-42a3-ad6f-2c9f0f26c29d.json and https://artists.proofprofile.net/proofs/artist/ee09c460-f724-42a3-ad6f-2c9f0f26c29d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247395027df08c241692d6a155af1544d8382a43bfa1fdaf2c52673dfd2a611a. 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/QMDES2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468911a8c0f84af8d561673f6452c925dd6c80f48518d68d1138d9061c1d8ee0. 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/QMDES2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbea1b7b748a6459f6ed67e504c09560631625f579fa005486afde814cf0ad79. 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/QMDES1700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f4f16a641b54455c7d79175ec6a8e316227ce3296547a6cc86f8ce6b341b67. 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/QZNWY2465183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f273fb969e17a1fe7b8fe5dd73bf6f7d2c7173349544d1ce223a5ff67e8c8d. 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/QZNWY2465184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18db74b70bc0272a607c697050d7459076bf72e4a437badac37db0a076db2a84. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZNWY2465185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22929bceaf24867a3af658fd767522fabc446d56a6d8d92201cc8554145b7cbf. 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/QZNWY2465186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45659278a91102e6be333a749c7d15b74878d5c86b90ae3db9da7c4bd21bd08. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QZNWY2465187.
Since Your Love (Live) [feat. Brandon Hampton]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5193684916421563c374b7b15b3059a8820e088d32c73854516a8b0f50ed3c. 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/QMDES1400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ed66eeea489e5b508d5f6cbe6931536c8a76a3492a89e998a6ad9327e3bc7a. 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/TCAEC1994672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccf4061ba346444230c38910aa29df5fc1a6fff59235d981c848f62b95d69f3. 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/QMDES2300008.
You Are the Brightest (Live) [feat. Laura Hackett Park & Brandon Hampton]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cb764da465bb62f7829bd58f5a6f049685c407459adca74b47c88c00210b22. 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/USN5Q1700015.
Point Of It All / Every Other Lover Fade Away [LIVE] (feat. Brandon Hampton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3632be7cec25a1c5848c370bcc430bc2a4bbc0df5c1e6ba83a11fe451292f387. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/TCABD1100950.
There Is Only One [LIVE] (feat. Brandon Hampton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa2ae4bf730963c8f2d36d902f044fcaca1a7885c0814bf3e9b03b56eb21a6e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCABD1100952.
Hold on (Music Inspired by Nefarious, the Documentary)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfa47484709b7ec9d2ddd92a7d8fefcf05cd754d89f159cb3ca5079878d765f. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USN5Q1000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cb764da465bb62f7829bd58f5a6f049685c407459adca74b47c88c00210b22. 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/USN5Q1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162e0595f47c933ea3ad125f9017d4481f4afda05f10c2797e4aef831ebb220a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USDHM0903823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d79cb51b6d73c77e5bab26aee93a11d4130e7b1db2a3cd585e3f3ed0fa44067. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAAZ1150195.