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 0x0b8928042daa1579c8e1a1c65da3a4977480f04b61c74cb9eba3493ad907c794. 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/2c1be591-61e2-4c7d-9aef-565c43caafc3.json and https://artists.proofprofile.net/proofs/artist/2c1be591-61e2-4c7d-9aef-565c43caafc3.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 0xef0dae5d5b530c2eff7a8539922ce7831a46f7c1ed2ea0fdb422a680286f2c9d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEVY82400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ed2623f141b5a1fe1c1f56956715e94e8bf0d2af6dcde89c09a6cde87a57e4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR10S1910949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209ae80a86e1d01a72980d868f7c1cfce974d2dff315e761bdcd8960f0e7c345. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR10S1910950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e21c231980c983f4396e08fc203d988495f4a8e9a2509a3fc3de6fb435405cb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR10S1910951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba3eb5bae0524d10e75a9096ac77037439bf30675bd316def0b0b383bed0bfe. 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/FR10S1910952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19663603f67af572dde35f399e9ddaea76c20cfabbf4a814a5f1f598eccf3303. 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/FR10S1910953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7444c788a000151a7293a557ae8a02e1a07b0a99b2287966a6934a8a04671a. 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/FR10S1910954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dc7d893a18a1b1c18f7fbbaed918ed73d6812421ac63abf08554502f49f65d. 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/FR10S1910955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf983a488c3aba4eef03748ba6ea9d0ddea5362abb33db126a49077fa8b4dcad7. 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/FR10S1910956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e6b1e32a14593e2b3bb2c98944836a84898364f5ed76a60209819480099e36. 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/FR10S1910957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b55fa4a172b990ea2d8a514bc5383d60381ecbbf7c95dae4c7e03dd6c93a65c. 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/FR10S1910958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4791540fc785dfb1b7477f3a02ac59ffe01db59f7eac2377c042e983c1426d. 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/FR10S1910959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bc9090e327061aa457c76fefa946d1c747a5b39abda1d04dfa941e5e964d4f. 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/FR10S1910960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7b963f800bc8ef6e8209fd5efd937cd8a0c436f782379dcac2dcf0b3cdead8. 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/FR10S1910961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9409a15da0f99d9efb66c28d585ea6c6b2f2c8ff977b1c7f81665fe6b3f434. 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/FR10S1910962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d6f18fdea74f75e4c3a221f7476b165850534ed88cf8194533805ffe0dec63. 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/FR10S1910963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfea8750186980aeacbde441019b940e81b68ce2e6e75e40291b4a828618fcf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZ901700326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19fdb329103e8b6b7e9b39980752f8183de52bbdd947c8d9a7212d7f4b41f04. 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/DEZ901700327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6bafc71c04ccce83954d2f07575a4f75550c3ed9af54fc65469e47d4506b4c. 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/DEZ901700328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1561cb6b7cc2ea825d1a5baf03bdedca6a93fc1116a3a48e888f395585b1272. 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/DEZ901700329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19d1e6363feb0abcd2b98eb1e888dc53a957c14e1e3e6dc9fe340139c30b1de. 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/DEZ901700330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c13ab5fcb4bc819eb933ad3a901610a17ec83d93e6861694d986a4f1050b759. 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/DEZ901700331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a370cc2da3982078cc450ef0828cda2a81374f40854075dc3ab6f189389f6e2. 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/DEZ901700332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2339c0f94f7e3a99bea9c05e3913dc4403fe4b9b7f97962064f7ccf5a33ea8. 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/DEZ901700333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e51d4e0ba376f05c8e7d114577ae5002ef726c5365f914c86f79430fc8b3651. 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/DEZ901700334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97d468901229f06cc0e5504101d50a4b335e3df3a8beda438e52623d83d5618. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZ901700335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddd3dee6bdef5e75f4926a41e77a7443e0ec96638cdae4b8203935f92af71a1. 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/DETV91501207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0a4887823de32962e2c8c56f68036701d8178ba5f44213be22d5fca22635a4. 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/DETV91501240.