thumb|350px| Photomicrograph of various seeds In botany, a seed is a plant structure containing an embryo and stored nutrients in a protective coat called a testa. More generally, the term seed means
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 0x17eb2ca5709b1408b3465c269eb651b89f33a5269b5ecf66ac16d060596daa6f. 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/8e41ab55-156a-41c6-b0c1-badaa152ef89.json and https://artists.proofprofile.net/proofs/artist/8e41ab55-156a-41c6-b0c1-badaa152ef89.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 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 0xb5eda6cb5b3d25eddcc8e2bc19b29c4f37c444e8a7211452ca9f521a6965bdfc. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/TCADG1793612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044ade7f8fc6b742107368e75618d7218bf2fff50cfff073a93ee5e47b40fd9b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TCADG1793614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2f1735a2ff1672f8a42efcae5c3fbc16afbdc6176f62954138318043ba184f. 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/TCADG1793628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a0f70f7b9dc745154ad1f6f98b9193e6c630d102b2a686efa7ff699a226cde. 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/TCADG1793639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47d535d9f6fe4895a3dd2a56805e86c790f72da4562017f1c488f704d78448b. 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/TCADG1793641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3821ad32f0158d23a8de81cbb1477bc1ac50196744f3120c17de299ad22136. 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/TCADG1793650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b7289f06713335d1f9703757178b7ddd128a01f8c832223e90ee8a888456eb. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USDY42097610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8909802d8808c9114f52652fa4f3a330fff28d47639045d407644be82635cd3a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/IEWBH2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbed6e2cdf25cba828bc45e074fee51b2a827f92e07fb0deb72b3718825d3b4a. 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/IEWBH2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1e89400c62a6fe776d8a6f66ab660da26ab9ea0783b59261c12ccec4193690. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/IEWBH2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951f163d1ff4a0eb7df55bb53fa545c72918fe4215a3e801f934080b0b8f4784. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/IEWBH2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b23a437c26c105f49c05f911673fe33578294e00011a8eca8c27e33ebb3ddaa. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/IEWBH2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e882e3494c5c2e77eab06d2ad7cc9b4773ab3753e0407021da1dea4420ffd61. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IEWBH2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28db8b81c6ee2e07fdd698ba7b6d689ab9cf15078ff7b9249befc0e2edd3cecf. 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/IEWBH2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e12443e66a792e57047d8b340116a9e626feae2ef5b5e07f982e3d3ebb2e0c3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IEWBH2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97f0f9f87802a92851d43f457dc67273774b1ec5f66384178a1eca9ab1fb5fc. 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/IEWBH2200013.