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 0xd4ba992cb05e22a8174d6eff4377e73b658e16d2c0d13d0e205eca118b46bf05. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c512f92d-65bf-49e0-8d16-7cabbe076a26.json and https://artists.proofprofile.net/proofs/artist/c512f92d-65bf-49e0-8d16-7cabbe076a26.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 0x326d0d034161390b44fd2d5abcdcfda50fe2936f8f3c528e408df1b9ddcc093b. 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/GBSJN1300837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e24f5e9779ec77345338ab5a88816c926d83c74ac1f5abdf822646b776dbcf. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBSJN1300893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884627d029b346e11f70f5e691e8d1a665d2a75ac14674edcfe63dd2b900cd09. 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/GBSJN1300894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e2ae954c549f6dbe0d76fd5695142ecc9d34be015980565db95ccca934d95b. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBSJN1300896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f7f3c7a0208d637066a58dfb9fccc6e4f09008994ac969c1e931b84b90803e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBSJN1301154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ec9cda1f082a7edae793e65fb92a66a52a596e22370047c05c147840685d3d. 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/GBSJN1301155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cfd918f13214e5023c304063e5e536e8cc4bdda17e59acd91e20421b30b61f. 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/GBSJN1301204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17947893c2835c9d0154455abc11fb0c2f9b31feba49af379a8a78022c98b478. 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/GBSJN1301206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1b8ec4eb219a0b2f2c2f1424268d1baa33e7ce4ab608588056fbda0a5f1226. 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/GBSJN1301207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38e38468cff5ca392393fbb016a600b70b2984950f753832fb4bfdb57405a73. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBSJN1301208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d546eabddab3f5ae946118924fec107c0b01e444e68a960c369a53b687187b6. 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/GBSJN1301210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaba547bfe002fa610a156a2a1686c7dfd693c8d808795eed5106dde3caf7e51. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBSJN1301211.
Read Between The Lines (Black Barrel Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4565db342c8de240fcf28151543c78a105cb21b92f769abc5fb09e8e6d194a. 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/GBSJN1301805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789f56cd3f3c2fa03f687ad4f52d4c5115be8f13f388b44b901bb12d89eab500. 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/GBSJN1301910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba2479fea5df14d788f6867a462139e173269c82e62b668a4e932ceebb77b1e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBSJN1301911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4253c0e2017e8c581257f5a74607fa99757c785e5a1f4a8d9f20430b8219472. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GBSJN1301912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b6687ac2706f82d48f863f06d7a81737dd756a10b6ba45d0cd9b29b1788fcb. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GBSJN1301893.