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 0x580be41e6b6e9d50b98c473b927fffc6b078a37009b27a6b386499070e2a752b. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b64cfa9-af96-4458-8629-5bf6a125e5b2.json and https://artists.proofprofile.net/proofs/artist/5b64cfa9-af96-4458-8629-5bf6a125e5b2.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 0x36a3b9d0ace372769cb66f4bb6c9af2aaace146eeec9ee0752aaf8230bff49df. 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/USKSV2205201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629825eedff72d2a4b75ba5bb3a69b646fa2945ac066ed25d00173d26ceb08d8. 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/USKSV2205202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cfa6f959883eda66843fed623df73c01816dbd9bb363d4ec60ace0c670ade7. 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/USKSV2205203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768455e490b13d4d6c0e7e6ac37d72d5ced1d85b686243f89733a765e2ec9a99. 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/USKSV2205204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e814dd96ecf8f17f18319b76e53e1934a9a19e577420cba3eb331b83dc4c0b. 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/USKSV2205205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98610611df73c4f30afb0cec258e5d77dc73f64929f2c02f7339c469738ed8e3. 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/USKSV2205206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7f146547bdcd1af5a6135258eceb1fabf542648cfd0ed6b3e2f0bd1dec571b. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:47:12Z), 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/USKSV2205207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128894d12d0b5ef83e6116faa01f97d945376f01cb6a49823e3fdb184a58e30b. 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/USKSV2205208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14209ebcc7f8a1cb67b88dac38b841e9b13d0aca3493b89273b989e01a4d66e7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USKSV2205209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c425f30d50a647dbbead972787529a3d5d5e2102cbc0cb2651a94ee60fa8574. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USKSV2205210.
Flexual Healing Vi: Live from the Paincave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8bf2a745433c9023841aa22d62f12f18756b1d2d94bfdcb3ed3f08a2de3c9b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM3AB1602901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4bbac14cbfd7aa14eaee7e0465ada2505640365582e2ec1742718555f4a4ff. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM3AB1602902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af75d2f5da1a241a193f947d9e41e6a3cf8ac8bf4be050f3b331d9bc51dd5cc. 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/QM3AB1602906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765e51219a70d25ac8e71a78d40d3d8cc9f2f65fd88eecaca230da6457dc7524. 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/TCAHW2405334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef57b1a9033ea3424d08994506b24d62e79307b5a7c9c1b296bb63d0875f1c0. 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/TCAHW2409985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e079d36394298f05ee35ef0605eba1d217d3270f7e9c174641e15968872b6ab. 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/TCAHW2409993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8eaf0d8cb2c0e1f3af38c71496b4e28237d1e3be6fb760e7fa436cbe452958. 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/TCAHW2410002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4aba279ec91ae87c8218c34552b7bc08dcc514be253bd3fc8d5221408d94d4. 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/TCAHW2410011.