Memo is short for memorandum, a document or other communication. Memo or The Memo may also refer to: People Memo (nickname), a list of people Memo (footballer), Brazilian footballer Emerson Gomes
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 0xf2227591139d87c8ed4485ae60e8282ccc372a88bde8d497bf385d8f4ce7a86e. 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/98c8c6ce-2ec9-473c-a7eb-3012874a8a70.json and https://artists.proofprofile.net/proofs/artist/98c8c6ce-2ec9-473c-a7eb-3012874a8a70.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 0xc60af15e19f1e2233fb3797bdc1fe0a7e3e973b08458ef8650c723a7543f1006. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRX282096407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea041b91f26e39256e6e54572f16a02b8a654c84b74045bcf7e900e5ee2bad9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX282096409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cde949c9cd699f78830446dfcdc01931061ed38a4f46390352ffa0766567557. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/FRX282096411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cbd349cb84c994064ddc7b9716840e9d7a3f3e10d596a8e94beef276a1f562. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX282096412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf6839cd1941a0c3fef7844f9fa26aed8db290d3f247d0d6bb10b2c20895683. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX282096414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23e9d7d20685db61dcd74d8a1daa7aba03816b1ac9caf3874ee6e136759531c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR59R2171446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda923066300adfcb5e2d35671176a66ff2315c128d20b099166271cf5a42646f. 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/QZDA42281866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abd77effa44f70197c77ffc544bfccbd58bc9a5d65b6cbfbf8e365034f86ad8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZES52272862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda923066300adfcb5e2d35671176a66ff2315c128d20b099166271cf5a42646f. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZDA42281866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abd77effa44f70197c77ffc544bfccbd58bc9a5d65b6cbfbf8e365034f86ad8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZES52272862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a9a30b541cf699f61716859a8a29d3abfb7580cf65eceff7d9b89b2149e426. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:49:14Z), 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/QZES62281381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8ac0074127579ae6630308d3138ae4669e47ca6baf59061079debe0d3b38ae. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES62281382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5357423d73cb34d2c5668008a0cd82bcd93e2e190c49da2c57143c4cbb9eb1. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZK6L2272809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91e19810ff7b35bb0ccaca751ac92e99fa42c185e9ab968e37a3385fd5a4cde. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:13Z), 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/QZK6K2388586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6fd9fbefaceb094ff82e81cd3ca0a06f2a41efda3424948af9447281e9a728. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWY2335977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f40222d8fdcc7e406de26c8f035c2b4cf1e303dedc6b0c023f8d52d09535ac2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAY2328222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7fa2e6f7b0fa538ee8ec64692203db714c22b23a400539be285ac79c399067. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTBC2332985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37db15b20e47467fd976dc0dc4afab819ffafd19f5c23c2535ac83eee4132d2d. 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/QZTBC2332986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f206c6754c7fd256d376e8a5ed6298ff173c09f6bb986e80253657ff79261f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:36:30Z), 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/QZTBC2332987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959dc29c20cb1597b4b32829054b4c1e026c9e4dd5d9fcd2cc3e5c0f49f2958a. 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/QZTBC2332988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8929e397743a7fb3d573ce609cfddfd3b883b3e737e299bccde505c081dbc9d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:32:32Z), 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/QZTBC2332989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5357423d73cb34d2c5668008a0cd82bcd93e2e190c49da2c57143c4cbb9eb1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZK6L2272809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4b7bd9c417354a02bf4eac1a01675fea287af4e610b3f47cd5e61f2cd7af5e. 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/QZHN92477332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3421dbf526abe5e1bfa3f5ac9232c92976f3a9e13d1435cba55f23fb62c3e17d. 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/QZNWR2434772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365484c91024071a6b9148b2b99770e411a23430b53c3de58273753e6b9a7a35. 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/QZRP42480394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3738f66d0bea102a2f5c794470c06bfcbd47ead32e8d4daf9aaf48d2af7841a8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAY2463840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f40222d8fdcc7e406de26c8f035c2b4cf1e303dedc6b0c023f8d52d09535ac2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTAY2328222.