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 0x859587c15044ea1d2c407caf9f0588f1e1d6e4887544d28940a84a3fae341407. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbd3a46e-e87d-400f-a180-f77f021a0813.json and https://artists.proofprofile.net/proofs/artist/fbd3a46e-e87d-400f-a180-f77f021a0813.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 0xa784ef6ab9a266fec6e2bc32f38a7db703aaaea981e478ffb876faeaeb658070. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3EX2429813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48176a66e5b8cf16a4e465cb0fa17861f4b3863cc6a4b6fb4e79151242604e8e. 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/QZK6P2514279.
The Devil Drums the Darkened Pane (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454beb39e207e16ba00c65553221d1b5cb2df723c2792279df9df3461c5be707. 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/QZNWT2565933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5aae45aea616f47b3d43f5e2b7534e41a84598be6c108b8c23525e87b2fadbe. 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/QZZ7Q2454464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa784ef6ab9a266fec6e2bc32f38a7db703aaaea981e478ffb876faeaeb658070. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QT3EX2429813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa441f0f85081ff30c777fe02cad2ac9954281d72312e5b42044279a60c417216. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFX2416092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe808cf00202f59ef8e2517338212265ba3e34ba097372d40af65dfe1d06514eb. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZDA82564525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293db62e8ccf00be4f95f40e3b78634e6d5186ac38403b3dcd2cf3240c7bb26f. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZMEN2515212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5aae45aea616f47b3d43f5e2b7534e41a84598be6c108b8c23525e87b2fadbe. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZZ7Q2454464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0d6f8f8b4abecd61ef10eeb5f910fe9beaa71f12be27c9c89b6975054352b3. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZZ7W2443407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47037f39bbcf65e4686fe38fc78f9332e2542a0cba127f460145bfd66524af18. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZDA82564526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454beb39e207e16ba00c65553221d1b5cb2df723c2792279df9df3461c5be707. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZNWT2565933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48176a66e5b8cf16a4e465cb0fa17861f4b3863cc6a4b6fb4e79151242604e8e. 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/QZK6P2514279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539a3572572cd95a3dcf36f557830a9a3fb9fe5ac7eff0d8450c35116e3d03bf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNWY2587915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9987f20c4149bc298d5b6b96ba02525ce2d4354ad355b6570c982cca81947ba8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAU2589208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0ec20c31f8bb1280299372a989064c9af25877acb9e16ffac384ab1f63fddf. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZTAU2589209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055b4196d33d9c60322aa85a220dbe16d53a797fb23de9de27745b6492f0323f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ7P2418196.