Sein can refer to: Places Île-de-Sein, an island and commune in Brittany, France Raz de Sein, a stretch of water in Brittany, France People Given name Sein Aye, birthname of Sitt Nyein Aye (born 195
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 0xbcc37c3a2e3d29b7fdd5cd0aba97849971276ee4fc9ee730f2d241660fc9de02. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/461d53b4-8277-4fa0-88ec-cd26d42bd163.json and https://artists.proofprofile.net/proofs/artist/461d53b4-8277-4fa0-88ec-cd26d42bd163.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 0x07b88b03b4085c98954abe86c59d178474d18e227c12af1a00af6bb2665f67bd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR6F32101970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e92ea15fa4f2001ede781e45d918aea25d87a0ca8be615909af37e2b242668. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/FR6F32101540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b88b03b4085c98954abe86c59d178474d18e227c12af1a00af6bb2665f67bd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6F32101970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69b4c5fa76fc745fbaef7fe5aad262f0af68e6b1581088610f32947331c905d. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FR6F32102090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1794f74452ef40baa2496964d35e0b82469e9d151c2d221b28ef8e1b1c0668f9. 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/FR6F32102080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11129143d956baabcad87565ca32998851d698f38a15ea51f106f65a4ee0945d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6F32001900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e92ea15fa4f2001ede781e45d918aea25d87a0ca8be615909af37e2b242668. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6F32101540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11129143d956baabcad87565ca32998851d698f38a15ea51f106f65a4ee0945d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR6F32001900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b153f1696e53d6dc161a99136a9a043dea56411c29bf3dd4903fadcd7c97c3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6F31902320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19f6e6b1b3680d07dbfa6e814c8ed889d3366ae157945752a803b9e672dfc04. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6F31902240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50aefc84ccb87b286b3213b4e90ef9153a060571f5f302c677193352551dbdc8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR6F31902310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd693b6ad3cde592ad6be4166e45dcdc4808a41fa9a54891e0748eed08afee0a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR6F31900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e50016a602728dde1b76baaa39b0e319f398c0d3fc85f77c0bcfaa7181052af. 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/FR6F31800770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17c49d718090dbd137dc5b942258dbce655aa90369dc6f69c59d6e83e0c9762. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCADJ1790435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6fec3a03c766370c9460cf11dae8e45101d10ced2b2d2f8296d868baafa1e1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADJ1790438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9428667b5720aac6837b6b361281258e841e17dfef1bc41937c7aa25f4557f3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCADJ1790440.