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 0x21f2a992c98dd1418d0681bb4844cfa5b1410d7a1fd9db0ddcb826e1d0de41ef. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46916f6d-664b-4e37-b5f6-f64a0378a083.json and https://artists.proofprofile.net/proofs/artist/46916f6d-664b-4e37-b5f6-f64a0378a083.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 0x920203ea688dc76675eb5ae0cd1026529706a7b7c4bd377bf9f9f491d01b09f0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USAT21600232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa626bfda58e25ab0558fb7294cfb19110a2caa39db4aa86d6e5e05bfceac83. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USAT21600903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093b585b1303793ca80e368d996581ed723e791370183bbb5253b369d98e88c0. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USAT21600905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2a59b970a3bfbe4b46593a617a5ca1fb51a0231a064682d3d8159e186bc3d4. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:37Z), 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/USAT21600909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18287d14472fc13c8f335b9debee0f9c32851021845dfe0896ea2271f88c07d8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:46:01Z), 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/USAT21905193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7870715de4294444a25d68528d49c8a9787585754b6d832ee8d616bf0d14c2a4. 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/USAT22003364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e7995c2b987c69be6ec140ebff8df249c52dfd0753ebe0edaf7911088304d4. 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/USAT22003366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81587b93eb120c86da36a08fb896a779dcc900039c2d69b1797726f0a895ff1. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USAT22003363.
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 0x36e814972c1fd7795f3ae2c9f6d1bc92a39060b7c71f14f70e6ddc7888dc0397. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USAT22003365.
Element (from Insecure: Music From The HBO Original Series, Season 4)
Privately (Remix) [feat. Terria Chrischelle]
Single on Christmas [from Still Home For The Holidays (An R&B Christmas Album)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc33bbd57e038733c557563b40ae919c1c1895f3dad240512c2cd1410c65241. 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/TCAHB2353676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff98cbe5fef4f12d74d1b5d6d1998e8fca4db0c68b70d3ea3c9b153d384d2c0. 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/USAT21500958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8375ae97748770a41f1d5e6eb9396418fc9fd343af5117ea3d2a5e6d7eb2dd8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUM72221820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5874a704161a180ce0d33eac5e199334fca2aa0e2e53bfb39936f7f7aa09f53. 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/USAT21904784.
Insecure: Music From The HBO Original Series, Season 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02857be0f88321e7f16147e3785bb950eb31522852890de5cb4d8ed320197a4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USAT22001768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58401da1093dc3aa22ea5d35968b39d9f50fe04821b171e725da43243b927eba. 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/NLRD52349051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27307dece52ae61814954aee43844e8be55ea925bc32a7fd787715f85b280c3e. 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/USAT21504019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53146e78305f97637d22132d8c4496066f486c87bb9bd28daed0648d0481b090. 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/USC4R2106244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ef78f5a9f1f746e70b09d6ee23e460373fcb575d3f6b43367c1d98801ca3b3. 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/USC4R2106246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a330dd1b08c468c731f71f2153cd5741ae6acbf88d5e226a6554b62d7226b37. 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/USC4R2106247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b908372370a47b6fceb8d7d71de884084373b241659ae89d75cf778571a250e. 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/USC4R2106250.