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 0xe5967789ae123078dcc0e442d8fc6903cc75ab3e4790a74437272df5cfcfcaa7. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ded65f62-991b-4ee1-8853-e368e6c34022.json and https://artists.proofprofile.net/proofs/artist/ded65f62-991b-4ee1-8853-e368e6c34022.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 0x1a5b3ca0f5c468c3b5872d54a9134ab5bb419ae9e47c8ce44dbf80c1dbdf00af. 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/DEH742405231.
Dead Man Has Nothing to Loose - BlaQ Soulful Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c72da3ef61cb3737d86ef8d9e74866840fa84c5b9dd3acf1fb91144a30badf0. 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/DEH742405233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd005b9babdabe666e3262a3e6db5073656136cb30b8ca4cff1cacdde3d7dbf0d. 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/DEH742405234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b51b22745237a88844daeda1fd14393d05a53f268068e04903c8da0436571d. 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/DEH742405235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ff72154f35afb07c1866c9bc2ecc81c54390b829eb6532cea21eeccf17d7e5. 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/DEH742405237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1212464e5739730cbc2dc06e9cd102fd5fc48a292ed34ecc79c86b3fc0aae72e. 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/DEH742405241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a36fa20e677172adcd6a1d2c9d03c84ba5b3277d2a756ab3b6c03a50da6b8b. 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/DEH742405243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206ba063a2449ec6c5bad036d7ebec6027b6603e1920306452d3d372977b3f67. 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/DEH742405244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153a6f36a016ce360a91d699f5b9ea14ab105abfc7b84df4bf21b438fcca1b9b. 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/DEH742405246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51279ba56d5fa2d7b1a8fffb73e448d8997c69f0ca2765746da27e477f482153. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH742405247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fd78d473bb471457c2c118641249c7365158ec8e4344772d7fb193b64b8e09. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEH742405232.
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 0xbcca5e253344a4928bee15151b3141a60f158aa1c871fe142846b96b4dd98839. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/DEH742405236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf860c5a04a106a331127e266449cd7d2b71dd9de24a555a39f1121ca1e49a8. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEH742405238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4185a87f90f0beb1a2ebf64ccca20cd14a150e05c0faa50715f847578aef5631. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEH742405239.
Groove Behind Me - BlaQ Soulful Vocal Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70131a75fa78c2b435abfd9deb21ac51c7577df9dce587d14774babd53dd818e. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/DEH742405240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c23718c7a36aafced7626af83db095cb6fe89030733709fd34ffa5056b71ab. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/DEH742405242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17579759d82850abe9ed2a0c8a7a1ce80d603902bc54089948c0a8e6ff21bf82. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEH742405245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f87c3dd7d0c9978d5fc5bf8e1f96b80b42e49298662c9ab31c513e9ef55b89. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEH742405248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863bac201bb0eeae16fbd61dbc013bca503b854619d9b2a7e3b27def4fa3f328. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/DEH742517490.