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 0x0c9460244fae35a3953c951c7253b788251d1118a20119b17bb6ee30dfc07d9d. 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/1bdf3b8c-b151-42ce-a779-6a7882707e88.json and https://artists.proofprofile.net/proofs/artist/1bdf3b8c-b151-42ce-a779-6a7882707e88.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 0x56802853311f4f1da706b7386e056de32a0d8e94a3d40100782faa902c639abf. 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/NL1DT2200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc748f23858858b45ebe07a3522aee0e5f4ef13514d99e4bf8231b0d2ff3f5345. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL1DT2200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f571180117b7e6b80a89a8cae7985f6b6a4b7b20f6a375c0175e83357bf42e. 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/QZWDW2375747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bbeb69d0bbcb07dfaccfda3d23c372aa17fb3d1e4622f6318bcf5ff251b1b4. 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/NL1DT2300024.
Dance For Me (1, 2, 3) [Stutter Techno / Sped Up]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc0a3942d974f7772f6a3a7ef4809ecbd77e8e6f68511dfdffc7a5a0b7cc724. 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/NL1DT2300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ebb55a0b5271350e90bea326210cfda9beadd65fc9f7b76f00ec4a0f3c809e. 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/NL1DT2300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ebb55a0b5271350e90bea326210cfda9beadd65fc9f7b76f00ec4a0f3c809e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL1DT2300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ebb55a0b5271350e90bea326210cfda9beadd65fc9f7b76f00ec4a0f3c809e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NL1DT2300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f571180117b7e6b80a89a8cae7985f6b6a4b7b20f6a375c0175e83357bf42e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZWDW2375747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ebb55a0b5271350e90bea326210cfda9beadd65fc9f7b76f00ec4a0f3c809e. 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/NL1DT2300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ebb55a0b5271350e90bea326210cfda9beadd65fc9f7b76f00ec4a0f3c809e. 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/NL1DT2300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ebb55a0b5271350e90bea326210cfda9beadd65fc9f7b76f00ec4a0f3c809e. 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/NL1DT2300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28344a33e577a5429dd5a2ec60134afea7a3071b9953ee2342bd3746cae03001. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NL1DT2400479.
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