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 0x0e1207017d9d19add30231876737aac57f2dc608749ead18cc75af7f29c7f9c6. 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/9004bfc0-3890-444b-a99d-232d850b5600.json and https://artists.proofprofile.net/proofs/artist/9004bfc0-3890-444b-a99d-232d850b5600.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 0x412f8ca44ada1a50c898a5c960fff7b2de55f5abd20434087d2a4030bcf059b3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM6P41496637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57425843c54df29f65563d0871889f62f9c2805889a39f6ddac7c32235de263. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QM6P41496640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fe7d8b185d61b140b83bf32a2392ffcf0ea1203a561bbdccb68ea3f14d1066. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM6P41496644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87816a0306b2c0ea7cef9c64d46edebffb543c7d60021d8942b9d6e3da9de957. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QM6P41495498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7428f43f42250e35cd15b620c266ebcd6ecb37ed48c88b8a2f9dda21381f0a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM6N21598502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1707ee0fa09d5513d08906810e466fe28c63b6f61361889f6b528c19dad5b577. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM6N21598504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4ec20912ab8108c99fbe0c7aecbc8befd957aebe280e390d70272459854c10. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM6N21598506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee61a8528ea0cbd53c327dec84beb668557d55a0815ece2c84f2ce8d2825d911. 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/QM6N21595162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedeebd3bbb74516f4ca05d1e02db7a2975f62aeb3d9c5555af89bade3ba738d. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/QM6N21595163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54082697820cfbda08e31ba11c72644c473f89646c06cc57a98f8c7e2281fe44. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6N21595165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f70bc650af5803322219fe9ecb071bfeafb6c69b1c3eb80e0957d0c171821af. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/GBBSN1800005.
Essence of Healing: The Gold Collection, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5fcccdb5df509dd1a8e4c805238fa784a6d0e27d43ce082f9c37be3b7c7b89. 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/QM6N21594893.
An Introduction to New World Music, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2e2fb3f5e823efdf32d2f3e9754bfd35d7541dd4742fec4f3a4a0d0ab791c9. 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/QM6P41498079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4358e5084ddfb098cd2d1f140fa7dfa340671d5a85c58b59cf82140d56391ae4. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QM6N21598806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3243cb939c2a9b951f0fb81c6c6227bf4ab1dea9b54d93e23e624dbf01cea07. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QM6N21598809.
Reiki Peace - The Ultimate Reiki Album, Vol. III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796e6fef2ee0d1f9038e55de2b76ed2e1584d158d54636a7dba08404eac49775. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM6P41497997.
An Introduction to New World Music, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad79322dea16ce98f218581896bb4c711fcef17f633ec0dd6cbef60d1b6592a2. 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/QM6P41498047.