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 0xef3fb2d2cae075ac7f5a01a009fec70888b65d05f7a1ddc296987a80b6e498fc. 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/a26f1afe-2c8e-47b2-9dc0-736ad326a866.json and https://artists.proofprofile.net/proofs/artist/a26f1afe-2c8e-47b2-9dc0-736ad326a866.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Show Me The Night - M Sierra CGS Official 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 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 0x7cc41231c295a44e55b772646612511103d8c1f5b3c32389f8a70258dc34eac1. 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/GBWUL1690903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2602f6265396dc2fa5bbab1134c59efa33ca7c75e4a2b6313376f8618a3e52a5. 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/USLZJ1723349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2602f6265396dc2fa5bbab1134c59efa33ca7c75e4a2b6313376f8618a3e52a5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USLZJ1723349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8a9690234a85063ef7b1690637bfa3a9509f237f7346cd751a931ac5493bf0. 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/BXEPJ2000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb38839da05fe001428c270a8d0d9067be06c1df7729bd75d6b789f7433b0b9. 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/BXEPJ2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf213254b63c753d42b9a31dd28cfdaf44e878f69741f773c9df10a233403773a. 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/BXEPJ2000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908f04b013697a7b87d2f0b0475abeedbc98d341eae2f095789bcb0346649ee3. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BXEPJ2000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479e3d6796e6b6a15e9b2755bbfb87c818b7f65707bb155bd45a5b46ffdf0079. 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/BXEPJ2000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67684793348966b300df1c421734b15bdf0ae04ce0d524d65a38339998c4257. 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/BXEPJ2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b435b3e9ff1bf6d5a2312e096bcd1d093a43bbd9cb05657d8dcc14c472b0b0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BXEPJ2000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea445761c27ffea9c73524674a9ad5cf4c9a50cb188b347d33179e57e1cd0243. 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/BXEPJ1800352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caedf77953929d6fa71f6e7dd5697a219816e6653a170287b129de87bc03c52. 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/BXEPJ1800354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e34f3b187133549344f2908a5d375cefc3b66aa1583f55ef62edbe1ed398d1. 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/BXEPJ1800358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782d75d0c3e04123c3d8f0d6ed76332038f4c7a235daea72be91bfd0b24ea63e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BXEPJ1800361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd33b37b42c01ee1aaf67dd6b03dd105060fb633a5bb08e133f72758271a4db. 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/BXEPJ1800367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ba8092dd6765b913b9e5c201655656cd3c1ece0746988804c33565aa6b18c3. 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/BXEPJ1800370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055c5ac31d0334e9222891672edffb50dbf18751133a946d2acc18b7c957a8e5. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/BXEPJ2000235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b30a0fa87161a47722f68c82856c49923f17021fe27159560bbcc5e2608f3af. 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/GBWUL1464473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475fdcb16479fc3599d4adc0d65333f372dc9cfe70fc426fbb31a8bf6d81027a. 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/BXEPJ2100062.