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 0x1a483efef4af1e252339d6211ec6168f7d70d5481b01b93a0dc5d1648162a8ee. 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/f315aab1-ca02-4c9b-91fe-41b233870887.json and https://artists.proofprofile.net/proofs/artist/f315aab1-ca02-4c9b-91fe-41b233870887.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 0x56fdd0129934c02d7fb08c095872e567107660e7c07f221b35073cee2f4c167f. 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/GBKQU2472530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20b782d40e30bc856b2b61a33e0137fe789a00a7955fc46219f4b68cb408d37. 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/GBKQU2342563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb81d5ffb8c31217fbed3c82b7bc10daa1dbcecf07b6993023179fd3c603135. 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/QM4CD1500357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95b89115f87f7f35959650988e406fb331d6895d835e505c91049e7a6567f47. 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/QM4CD1500359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e3699b5ee07021d6241d59d554761a79467fe22ee5bd3913759f233a1b1b45. 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/JP92Q2417317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1281cb0352ab14cf4574e5148f331c87b9bf84c14067987daae9444867949e3. 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/GBKQU2439683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef51c36bb0d11b6958d9ef7f72a43cd6ee3e32312d70da100062d1b286dc404d. 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/GBKQU2439684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0b8e5308950374509ab6374c9329e0bb5a67aab02ffb64ab1dbefa01869bc2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:43:02Z), 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/GBKQU2439678.
Around the World (La La La La) [Hommarju Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167af91a00c7b620482cfd5d5b8e9f4476af0aa04f49a036dd7ef08ae85d01b7. 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/CA5KR2309720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa00e017319196b70e6c2a647c7cb9c9fe52291d9ac2917f458d9de059201f2. 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/GBKQU2287755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0b1f61e1f9c14d27a7fd69f229f9cd9ff41792e716ff26bed5c58a62103c66. 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/GBLV62032207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b982e7d2db8842ecd59c72eadc717bdff1ca2c0827314c7a816f18a87af256c. 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/GBKQU2010252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adf8d5ed05328b899692501708ce1b3dcf0b38b31efb1230e55de6f32a0262b. 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/GBLV61919660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062f1745b8ae32b5f24bad97822e643e54c3bf02d76454f53085c8601069d3ac. 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/TCJPK2058158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b427ff29eb69f9b927aeed83c894d07a3123274f95737afce82d932242bc91e. 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/TCJPK2026937.
Arcaea Sound Collection: Memories of Wrath
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fb08573c607cf9970fcccbff8947fbeee0a86575a81ad911fd37300571c2b2. 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/TCAGF2286591.