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 0x2539d70a93e091894e7acb2cf993798954b9536564a98c75d4d93734d801dd97. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6511528b-a6bb-48ea-a1ca-90042936576c.json and https://artists.proofprofile.net/proofs/artist/6511528b-a6bb-48ea-a1ca-90042936576c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Death of Bars Beat Tape (Best Beats from 2009 to 2014)
Kick In The Door (Biggie Tribute) [Freestyle]
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 0xd9dd64218cf6469c1c25a489cdcee9c6944f56d9b144b9308b0081ee4c267d58. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZZ7U2426345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dd64218cf6469c1c25a489cdcee9c6944f56d9b144b9308b0081ee4c267d58. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-20T11:53:03Z), 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/QZZ7U2426345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea1e66156cdc8cd90d7605ed2f7d55dd95a75646be172e2712a00622f3f7364. 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/QZHN32540703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0389f094536c69c459f581fab2bfc64e18a162173e5a3f7cda9fe5217e98f100. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZHNB2558817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0b063866b1dab2b59b8e5d3f79d59c43fe38956166b23a9975698ad81ddded. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6F2564837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17c15783642aec708f7b460af282b80cb513897f5d78c4c036318220c366a27. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZMEM2541907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88035570d2e350780754c11e69767b698e7ab9a872ae535de185603c22372321. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB62577094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbba9adadceee95a31729fd86450881eaa87c28fad10169d23b13ac8b098e531. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB72500294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25523866dc030dae1c767f135312e066ced135f222b2ac1e58b51630941fd292. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZTBA2578851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248a18f2b1578c957a1e9e1ca9cf4c724859eed48b7deb5bbb2b04a0052ca627. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT3F32578716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71d9c4d8954a0b1718eb3fb916a22d0c0c618c8e21cc2dc99c6bf1601aa2eb9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QT3F42578898.