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 0xfac1b06d53467a1a08a23121a5a42c8447e1f9219721a0e83dd7005a4d043473. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acde65a6-1826-47ee-b206-c6e84ca64fe8.json and https://artists.proofprofile.net/proofs/artist/acde65a6-1826-47ee-b206-c6e84ca64fe8.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 0xb7a7f9a415c581cf27b6b6579d00d2a81da3951fbeee4160fc2bfc959ef9b3ae. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZQAY2485468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2537559e32244fdc9a4f8838b064a3d595ee4bd094cc08153b54b66092675445. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZQAY2497600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7e45bc7c6f2ee22b14b4eeb6d6adfe4d973bbd15b955ce4dcc6d6a5aeb5315. 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/QM24S2008923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a5d0bc04245e8ee5ae3eb350bd5cfc5bc3e5c4114cb897ad5daacabb8fb254. 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/QM24S2009370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd5db01ada4604947911a9f3dd56885c6c07a29ae250882960f70be8db046b6. 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/QM24S2009371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef56f2e1204e84d258cd4f1abf16956e9432f866e0bc5197add70266a3eb3ffc. 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/QM24S2009372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1844491b8571d5eaeca2ae47b9ec5b94ff8c1902c8c027bf9907b2e1f6d6c3. 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/QM24S2009373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc6a8068fddcc81934fa6ed5a6698ab3c692a6d6479567b217f219421917d91. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2008748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc6a8068fddcc81934fa6ed5a6698ab3c692a6d6479567b217f219421917d91. 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/QM24S2008748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9291844cacc0a2c1d60fdac51d9e351e8970f4308fd5f1480afa05131e3b8205. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA42004225.
Original Television Cast of the Wiz LIVE!
The Wiz LIVE! Original Soundtrack of the NBC Television Event
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732e4b4d0aeff2fa13beec716de6873466173fd4e4d2c13a7ef5f69d87e3e1a2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQX91503341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7b4e631a6a86106e5bfd3aa953fb80ec770d4bd8f7a07c62305faf7fdac055. 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/QM24S2302647.
Full Circle: Sonic Book One (Alt Sounds Pack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7b4e631a6a86106e5bfd3aa953fb80ec770d4bd8f7a07c62305faf7fdac055. 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/QM24S2302647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc902bcf590d316734c092987faafe706ea48061074d71878dfbda0b8addd8cc. 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/QM24S2305373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2033734f5752670ed2e1da431bebd120add429e7361076e61384daf724bdde2e. 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/USUYG1274247.