Acronyms SAMI, Synchronized Accessible Media Interchange, a closed-captioning format developed by Microsoft Saudi Arabian Military Industries, a government-owned defence company South African Mal
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 0xf54f4ca4c7a7f31a586f95963f9d8b8d7861d4b2e522f30a37d38bfc6540557a. 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/d92ad6cd-e264-48ab-bfe4-ba0f1f4d4801.json and https://artists.proofprofile.net/proofs/artist/d92ad6cd-e264-48ab-bfe4-ba0f1f4d4801.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 0xfd097c2387e4a2e0dbb1f5f60a3ff95893c18da6a500b7a93c915ce0be303c3d. 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/SEWLR2410201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85a336a61f6b7a894f1b4aab34d1aff57952748c685481d43ccc39c6755efa9. 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/SE5BU2007825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ffbe6da8800a60e86a20d30434c98669fedf2d489c1fd66517c7cac7eea85a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEBGA1801240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a190997a684b02e3335a0fefea2729b9de23648499839c749369c968d48a1a9. 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/SEPQA1800303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d52d24999e1c18c0beb09e4ad5dc7a2ea71b3ed0f9882c202b499da38c5104e. 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/SEPQA1900186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcb818d1884bb6cdf74c1b9223f46aa1a5f7f4bc5bcbe0efcbf27f75cf7fd63. 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/SEPQA1900187.
Innan du väcker mig (feat. Danny Saucedo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64e6d686bb717a629a33851a0982a13243317bd3dfc9ece0e3f7a163b627bb7. 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/SEPQA1800350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeb7c303772be4e49b44f83737c12e9538233864f7e178a6ef7457073159a6c. 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/SEPQA1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4e3b9fe7b4e16674837fa50f8f0d2d1bbfe64194676aeac228e32290be80b0. 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/SEPQA1900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a6dd0d387bd06db020af98bd81c6856c6913a80651363e769683afef6ae465. 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/SEPQA1900189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85ae449f4265b0db0622c042d310b8eb2055ae790efac8fd8ce1b50ebd6862b. 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/SEPQA1900190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d63b9591b15a4ecc65b50d1429e80f25f2648c11b606ea240ade9656db55220. 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/SEPQA1900157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8f055b85ccf630d46a1b479bef4b7598d17b022ce225bb7c194c795ce438e1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEVQF2000506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8f055b85ccf630d46a1b479bef4b7598d17b022ce225bb7c194c795ce438e1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEVQF2000506.
Kul på vägen (feat. Sam-E & Sara Zacharias)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41e848d92cbcf036f10e57e9d2e044bd0276ab70aadba1064a197272e105caf. 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/SEBGA1500101.
Flaggan i topp - Sveriges Officiella EM-låt 2021
Flaggan i topp (Sveriges Officiella EM-låt 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c1be80220ee94183a1f7e23181e1727369dd8bbc8a31b7fee4990e431d1568. 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/SEPQA2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63ee5898593d47721bb762d2cf097d8a7535e534f2fdf677a6ec3d98e4f3fcc. 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/SEPQA1900012.