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 0x4e6ac7f8d03527575ceac965827f7fd723466e552c26098557c1431eb0a334aa. 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/cb95fd23-ca6f-49b3-b141-0c82aeb4a313.json and https://artists.proofprofile.net/proofs/artist/cb95fd23-ca6f-49b3-b141-0c82aeb4a313.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 0x6f771fb0ddc0f975d52d95fee4bdbb256d838cbe952930558d125d87d8b9126d. 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/DEW872203426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd3973b33287f428e1a4473da652a7b73739c309852cb44e29c997a46657761. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEY472280023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82d8795caf2f62de9eb72ccc600a12ab03aecc81d17bb70f9d1279dcf2b1e8c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/DEY472371608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc594c6ce5962bdfa451c6200039e9fd18a7d9106cc79c846182e2ecb72f851b5. 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/DEW872304142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5a9b4ecc05f2c26dc2d449b3a845f9d3a69f188b616c4bd25652f4fe36b250. 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/DEW872304143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b68cfca4888b08a6e464e8402bbb62d3cbbe21cae1567ee63bcd7f3212a55e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEY472378809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3420b07e24231b0696eb5c718f17c324fef626fd13fc8d02ca6e7f310894ee9b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:59Z), 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/DEY472378810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c125a8c63599f0a52a6970a331c4aa5ec56e36d7f6a79ba866a265749bc6d5. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/DEY472476141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74342425e8ed73a768b24008c651e5aed5bd3a8fda766b5d54075816ac394e4a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:55:55Z), 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/DEY472476143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce9ef846b6babcc36d25bf8e7cb186597341b933438daf14047fea662a05038. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DEW872406705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68db18bc56276f459ccde902d1ed353db05c3cdc93b55050b45231ccf321e5e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEH742525554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1a792713164a47009ea3d64d9bc8fcc6be3d6f9f0ded93ef9a5883b38cdb8c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEH742528613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6f5470823bcd36ec26329358b7a7bd48bc33ea2eb093e666f704771fc133b8. 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/BE5KW2300462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0280f230699fb54ec9f5aa0c19a301c0a6b3d0229727dc8190d80c41d17497d2. 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/DEW872303344.
Find a Way - Tube & Berger and Nick Schwenderling Remix
Find a Way (Tube & Berger and Nick Schwenderling Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443e02bbe9aa722704308714fe0a9621550f87dbafcbc44ab8152968929f325b. 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/DEW872110287.
Where's My Love - Tube & Berger X Nick Schwenderling Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8b3c66f088f93a62b0809be4f7c6f015539266bb96869e351e24eb3d7a4f9b. 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/DEW872403462.
Where's My Love - Tube & Berger X Nick Schwenderling Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3731a9b9f22a427d15269b58e14c1ac1036ea76946c17c7efe68536cd675f22d. 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/DEW872403461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a850fb05f6bdc818ebf432105560174cfbffe36677e607cea80e5bc15ec0be2. 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/DEW872402998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb829fc1a05da5c4c321092f69fb40423a5fe56c50e9942bd3749ce2f51e4ded. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DEW872402999.
Forever Classic - Nick Schwenderling's Pianoforte Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e787aaf3220353f198b4ff96da0d32852795cfdb24a3d449a6742a2e3d32177. 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/DEW872402136.
Forever Classic - Nick Schwenderling's Pianoforte Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2f1d65e8d8c4d0a05e58d1b1abe232847968c7290e485bbf3f28df333a5177. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEW872402137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9a15a637c82cf129e695e5d3b616144387021cf1134af55222717c26eacfed. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/DEW872303345.
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