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 0x7eacc2017207fe9f036100fbf5c19108a466bd83ed3ba1d38b1ba3304771efa0. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4bc64994-ac73-4a04-8dcc-57c5548bae2c.json and https://artists.proofprofile.net/proofs/artist/4bc64994-ac73-4a04-8dcc-57c5548bae2c.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 0x1b041fa03cfa4f9d396e876ca1f3a4fe0dd742c3a5ea3dee6d3a031c2c3bd641. 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/QMWHB1811336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41864f15d07b2c56c03b4a7a8ee755891a61ce8d0cacbb60f4dd0aada077fe1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMWHB1811337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ad09f2cc4b74985ec8d8607b141c96440ab498f90aa92397b2d8e9c59c5710. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMWHB1811342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ea3186acae5f860bcd4a6517cf68dadacee9afd5f157c75383b920c2134a34. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:20:57Z), 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/TCAFA2052171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89368dc036a02c3aa32aea7a43cd9bff49b29fd7dd3864c1159a8ab97f2f0474. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFA2052175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12eefb7a26729248a54ec2564dc76e62af030609a70b40e1388b23e99de97a99. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAFA2052178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c193db0c128876bb3ac1a6c08181e1df38b3bb8ae0ab1414a80ee3b0f1d44d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFA2052181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596138552f60067929f9ccd370f809c2144904aa228a66957bef88ddcb7f05da. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAFA2052190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5915fe59dfa810970ac8bf2eef753050c202b9f87dd1707d6b144d52c3d7afb. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:05:02Z), 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/TCAFA2052194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545715418b9917b07daedfea56c78f10ab9d6d89f025923a3be3fb595539e3be. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAFA2052196.
Sounds of Reggae, Vol. 1 : The Best of Reggae and Dancehall Selected by Sly & Robbie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ebb6b3e1009e43c48ad58ad1b6817b8718b32710f4bc1c35b15d98bba7420a. 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/FR5U11201617.