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 0x9225b89912f33715542915247a3b8966582bb324f8253058184ff9d3250a2e44. 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/936e4b1f-e98c-4811-bd71-da16f113de0c.json and https://artists.proofprofile.net/proofs/artist/936e4b1f-e98c-4811-bd71-da16f113de0c.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 0xc501affb2bd7edb3020619ad893fe1c6f7e9902df1e94907e14fa2b01ab2d8c1. 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/QMGAC2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864cf29a3c73a6eda80e14db7e1aee785d4f9fb194f5cd82b1c0a86742cb8ec0. 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/QZES52177792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a24ab9f633d5bced3a43f04b8814807915f2595bf6b9e6909b5d124bc530018. 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/USCGJ1887228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e6d3b85b2f0f37815c6efafefa90c17d4fe64d5b545bad104fe5d201f7b5fd. 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/AUMEV2382889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83aa57ef26a0355072bd140494a0c209d08e9b641f6b0e631b036858e6464088. 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/AUMEV2382891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0b4b8461b2d7fae36ed24df2a54f1e1088ce67a43323a8c9ddbb2d0afb8684. 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/AUMEV2382892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a92df181c03c4a7dc274b64e96c905c72b3fa3b1d080aa01a06b0056160f54. 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/AUMEV2382893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f4edfa894998203a40cec0d3504c44e87d6974a5484ed77762790bf2f1a6e5. 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/AUMEV2382894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0348cb1e58a8a7970cf5c1e0f4f16b91a86059426ca7bdde89bf2e366870b7. 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/AUMEV2382895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8878723b279e8332df84fd29c944034d193ca7921d15808116a31a1f9bd836. 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/AUMEV2382896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fda0797db9e1e1b2840965b3b0544ba2d6741bed5b1847ffafd88bc8826865d. 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/AUMEV2382898.
I'll Tell These Stories to My Kids (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8e15c2463004e5912574fe8ca13486488158fd7a57306c7c6a3af1ee6ee65c. 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/QZNWQ2142366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5472baaae2d47a70ce6dff9327c1841262800ad4ae0734715e60740fcee969d. 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/QZNWQ2142367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669473f542d79ddad003ede52d5ef1d8dcb69a2bec6e7cd84c0421c8e6c11567. 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/USDY41773826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd683de517d4c8f5dc6feb3e0e14812cc2339f2785dec1214378ddb45cc94a840. 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/USDY41773827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65fe7787fd5b1043a0556aed214e2bdd6479840470194c7662d014f2944a3c3. 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/USDY41773828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67054e73f127e94bd586691c34e507fd226e39db3dc4b51c9318dca0ca4f6d7. 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/USDY41773829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb891107d950687d2d896e3d6ad06130a8551adaf8779a37dd73c2897655cc127. 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/USDY41773834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cf2f9dc1962ed95b1965bd17afa0becd81dfc0acdb6042a05e1294d96f74de. 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/AUDR42100109.