thumb|Blastema cells surrounded by transparent cystic spaces. A blastema (Greek βλάστημα, "offspring"Henry George Liddell, Robert Scott, A Greek-English Lexicon, βλάστημα) is a mass of cells capable
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 0x34dd4948b621b4bd847196776a455e1ef5a01ade32abcdd8ec0a97d73fa08a71. 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/7a07c4b9-64a0-4e4b-af50-575517d489df.json and https://artists.proofprofile.net/proofs/artist/7a07c4b9-64a0-4e4b-af50-575517d489df.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 0xc83862ee26fad58baaf113fe75b12cc89bcea240e3583eb771fdc4f83b3f7b7c. 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/QZTB22333209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcfac82913229d0f8a784e923f6347db25ffb12977e3176c248c38a8c5c7031. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IT1E91500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d8d11003357353d4877d5b6b767849c9ebf7a3ade49e274af863746a0ea1e0. 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/IT1E91500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32a32ef3aff396a3ca59ce8053ef6268af92c2bd2f5096bc3356da95a1f15b9. 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/QZDA72580725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363c64c6851bff233462603ed738692f770347faed621f0021ce54f920958211. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDA72580726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b55d7ec60c527de77212fc297cc2abdd83d86055b923dce0cf55eb70b930313. 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/QZDA72580727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62430893b3c989226dc7fae2af199be1add0c3e594a7e96597709c50ea63594. 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/QZDA82528243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7749944da47a217aec2fc01a2d0ea7e3a3e4de1e50e200d50505c441a959f1. 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/QZDA82526014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32a32ef3aff396a3ca59ce8053ef6268af92c2bd2f5096bc3356da95a1f15b9. 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/QZDA72580725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363c64c6851bff233462603ed738692f770347faed621f0021ce54f920958211. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZDA72580726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b55d7ec60c527de77212fc297cc2abdd83d86055b923dce0cf55eb70b930313. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZDA72580727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62430893b3c989226dc7fae2af199be1add0c3e594a7e96597709c50ea63594. 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/QZDA82528243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee840d8b23ba32793d2a15e3d0e9f45bc9b1dff6cdab64420f1888a8b5c150f. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZDA82528244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1292843f60150ff7c3e2888da101ddfbe3606edff93eeaf891ec19702252f1e. 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/QZDA82528245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a56326e792007639128ca1212b967bc78aa242a9e5643edd796417f845c59de. 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/QZDA82526012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf283b5b26e5fcfbe615ecf6b9aff73a348cd4ca284054f98582fc15e0e220b2f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDA82526013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7749944da47a217aec2fc01a2d0ea7e3a3e4de1e50e200d50505c441a959f1. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZDA82526014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8195ec7247d16a5a5db6e5b041fab05d1adc9889ebaa1387241fbd66eea1046. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:48Z), 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/QZDA82544744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4312622a76f4026e9aee63ba4b9ae0791419f3abae5c3a1cb3028e4e07b14b. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZDA82544745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa979826770de8651c99d9eb0d6c1a7cfc1d4f6861e8c8a7ab659769541a1bbc5. 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/QZDA82544746.