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 0x00d999e66bc123ad131e6b700bd2b1ef114f3e4ee324825183d1e40cab8edd74. 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/c43236c5-8d6c-48ef-9ab7-ebc10dac34ff.json and https://artists.proofprofile.net/proofs/artist/c43236c5-8d6c-48ef-9ab7-ebc10dac34ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bang Bang (Fresh Drop & Trip-Tamine Remix)
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 0xc246eedd4094e7dec75c722702248c835d6d71fa98ce15aa3d0db153b9f25330. 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/DEKC42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4debb3983b747912e6212fdc1504dc57536f640a0e519bdb32d754e5411d0cf0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH7812103558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52620b66bc96fced0f77a081b527f813b32032c2c7149f53c6cfe518f7b48515. 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/CH7812103559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21518be342dfe71996fbef5a77ddf443d6db77ebdbfff50007f14531764a0e3b. 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/CH7812103560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb003d65410a8f596da113e63567dda05341802dec362c92f2d5f4f59ba3b177. 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/CH7812193456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf071300f2211c685f9c005b94075c531dd829a280d7b7b0f45e4be9b06febd96. 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/NLRD52303918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4dd59e97cfb731fcde1124beee43cf861e3a8d2ab290540140c80395d80ee4. 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/NLRD52332913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0cfdd9dacc4197b3e98bb6467aa3d3aedb31bf1ac7fbfd979d1be1fd1cad00. 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/DEGA22303829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368ce1514ad2d1150eec1be678278eb68b26cc780f6a91f054ff12106c5c0fe4. 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/NLRD52119540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c71e2a70a76974a7198251e61c7580c40f7037e5eb493a674b576bf418d784d. 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/NLRD52119529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1611541d37b678a15e8d15fb55ad22289aab86cb3f38d16c4ecbc759845e4730. 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/CH7812194372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1611541d37b678a15e8d15fb55ad22289aab86cb3f38d16c4ecbc759845e4730. 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/CH7812194372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d5b5a76cd8458160b407098f1fec2d89fb9b61e71d3577aa7f860bd09c9286. 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/NLRD52119615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953973efd3c23f270de1fed275999ea7b723cc62599198ba93798df9b03b7cb8. 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/CH7812196248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9491ad9a2bbe897cb85f29ce813b123973b1c494ae51a4fc2f6bfd71412a0d22. 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/NLRD52119548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b295098ac978c64a15acf5ca025f0f84f4c21750669f16736e910906c00f9f. 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/DEKC42400065.