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 0x35dfae467bf6f1f045ffdd6a82040a783956117cdedc1b752f8003a2b9826272. 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/609750a2-6014-4332-b3b4-df8a74441771.json and https://artists.proofprofile.net/proofs/artist/609750a2-6014-4332-b3b4-df8a74441771.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 0xcdd0ef2fd60937437b93d60bf56d73a4889940e9bd6986d69f378c8d7ce9ec98. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEL051410001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0b752713175552219e7dcbab1a7ae0c20806926a2442fc6bfcd415f787d4e9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEL051410007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991ef5b91ac7688bd9d3fab5bf4c6165c2fcc063ffbac41fe2398d3722fcf884. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEL052020001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65702430ccdcaf7180064bdf58a1f5cf02369edfb885a99468bfc4d40da79c52. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:06:51Z), 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/DEL052120001.
A Cordes (Coleziun Acustica) [Acoustic Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc511f34384b07bd67f80210aa602698c98fa2c93ba9dad81a6ddaf33853c780. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DEL052430001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee79f67008e6a87a9a4aa1e296f97808e7db9a523eff1a9e98600b8e86d6379. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEL052430002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b37fd677036f21e044a512ea3797fee028ec3f9b2d13207bc5368f3f3a1f173. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEL052430003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94a87b89924554a979d31e7cd089aed0d349a022e987fee930501f6580a7ca4. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:27:19Z), 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/DEL052430004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88984595a61ad5b3d183657c31a93f999a61a9161e04d6dff9e1c77a1958ec52. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:39Z), 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/DEL052430005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218ae1b302515863550665904f3a78dbb688d69da591f852b656e2a63168f16b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEL052430009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0eb029a9395712db8e9121bd045043d755ad1a300b9e16fad94e7e5e6fb955. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEAP72214811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb5c3da335dff55b7f24323813749ff2eb2ac350d1256d47d930cffef264d88. 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/DEAP72214819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5b5e134f3f0812eed31b14462cd4c07938507dea8d35959f84bc02c2c89d42. 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/DEQV62000013.