right|250px|thumb| A makar () is a term from Scottish literature for a poet or bard, often thought of as a royal court poet. Since the 19th century, the term The Makars has been specifically used to
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 0x076c79e10cf605990579e75a3b7e96aedbd24bdad4b32a8b846c24ae324711b9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c3daf30-3bd5-4e7e-9313-260771229613.json and https://artists.proofprofile.net/proofs/artist/1c3daf30-3bd5-4e7e-9313-260771229613.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 0xee97934a8abd52664a9c03476e85aa08daa8e59646b2d3e2b7f54e435d656298. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:09:03Z), 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/DECE82200443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb730f4a4258a83391b4c9d4079e83c3438b5c06789e55b56392a54df6329037. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZMEN2295194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4b14b462c60017d59bf976e85e6fd0581a15b185d6d57e85ff8bade17e77cc. 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/DECE72300565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b99ba277e79bdc38d51e219668e1f156c26fd7459eecf708be9c646f802a04. 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/DECE72300865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbe3300e9b1feeca22149df3defe0da9ab0d55a415915ecc72cd55fee66ae04. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/DECE82300396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16037ebe490c23db08368c03084da3d6955fb939eb6da55a3f985697dae9d45. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DECE72302125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5f823603b3a7bc40a0488c7ac8daa17d85d8551a8a04b5eecd6f772baf508e. 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/DECE72302656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16e268c293443a5b47acc4802492feb28c3ce80654f594dabaa9e6e8a1ad8dd. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZWFL2399051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328176be5c83f5411676f5db35ba8c71fe6acc95417d1efc3446dbf60bd84378. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFYZ2422667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4643a60e3ed47b40f08788779ea838fe984f3608036c7a222280438cb27fbda1. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZK6G2471637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe039bde5816f24e6d9215f53e29416f761ea817ea690e314157069f8cd7be67. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:30:39Z), 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/QZTB42470372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf18defdd55c7fee77e7479f69c5feb8f7fb7b1c940321785dc9a798221466a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:41:31Z), 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/QZWFH2499542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c375ae1bc3d97988b42e4ea8c575657c19100aa3018d491d6c77fb1249c8c25. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKUM72300640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a3e297f2716aea257717cd89b57781cf55321b2bb8a7e5f1f0f9b0843a187b. 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/NLZ542301373.