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 0xcbba07273fb92cbbaf47a21fdb7380c0afa46e92a5233fae48c56cdc17b23269. 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/63695bed-2d6e-41ad-b701-c21bf3cfdfec.json and https://artists.proofprofile.net/proofs/artist/63695bed-2d6e-41ad-b701-c21bf3cfdfec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Town of Widows (Original Motion Picture Soundtrack)
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 0xe501d964613e6b1897be883d439d9822993df8620c8afd16e95ced7349aaf77e. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/USHM22005911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2162663a27f9c3ff87b92fdc13ca302a3ee903a548ceac3c9e64ff79454342. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKPL2170336.
My Dad's Tapes (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a3616356129aa3eb00008713c02ed1d842304e3af84d88343afc4e22f54760. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CBEMK2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c07cc4dd30ec2ab3db42b5536f605b35d220fa721c9a885a00af1d40cb5459. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:29:23Z), 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/CBEMK2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7a14a95a88a29f934582f0f32a88f83f33917ade321b01a86f1c8240120b6f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:46:42Z), 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/CBEMK2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a3616356129aa3eb00008713c02ed1d842304e3af84d88343afc4e22f54760. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CBEMK2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffda33f32f760ee0bbbc4ccfe1b34c58cd8995f9c43d89f03e81fc9131cfdf43. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CBEMK2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88ba6202927ae6e94043430feebf5d8766557cc2e6ad0c5c90a05dce3dcb732. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CBEMK2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe294cefb12ec82f1df35413e7a8720c6488d63bae812575c3961a05ef65120d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/CBEMK2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2176597b56541623df7186de16422aded46e82fde40d5f3865edf6cbb8eb234. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:25Z), 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/CBEMK2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44eefafad67dd1503535288a6daf7f92619879b97bb75a29b2bfae2cc99dc77c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:02:21Z), 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/CBEMK2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68da956c2e239259809b85aa0575df65577ec42fe43eb02bc4841d3633bbe830. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:02Z), 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/CBEMK2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7888d6126711e6e40416fd23d0cc78aa1a0a8bee3b8e7ad174c95b5a62518813. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CBEMK2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5978e1c0d8d7c7ccfa88721ad30827790a6cf76e3b3be278b05786eb66073ec9. 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/QM24S2202677.