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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705637e2e9ff091029db3158d56a142df5cc1606e424dabedd714038bc23d41f. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/156047b6-14dc-4c19-817d-afbdcaa5f1bd.json and https://artists.proofprofile.net/proofs/artist/156047b6-14dc-4c19-817d-afbdcaa5f1bd.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 0x5e93d5fb1cb1c9cbc5df00c23a1d514cf6adc42fdc2206a66d0f4f6cbdfb9fd9. 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/PLC062243898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957e81df1fdbb425501fa1605a93abfd7f47f4f575046802ad865d1db2eb9079. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLC062244630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12ed8ab95ace97ba0f366ebc00222a3bbb2074bd6118f4ec9076cd01c3e0633. 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/PLC062245170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1d0e0499c706ae4380693160b81952816cd999d3e1bb0595e17a73bf766fb0. 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/PLC062247096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27b2b74e4f94d615ea39fe5f7895248f28e16d4be0ee994d1a0831547a812a7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLC062247098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99a29a677c911175514b8cbcb087dc5551f7047b7fdd50c7a6db6f68eb34f1f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLC062247100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ca0d2fc790c6ec51e8303963f8a14c3d3435408555c7f53bdd194bdf3ca54f. 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/PLC062247101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792b7d9ce4aaa6dc95afab2d4b051e80f9f9cf6dcf7067c025caa8be10e040ba. 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/PLC062247102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba6a56a27e6c0283a4c7f2772ad378ca557694e7458575d759e11f106702a3a. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/PLC062247103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d250e536862be00bd13d63a50a53606f28e4e8463d4334ea959eaa4ec16296. 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/PLC062246353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9475e0903de8bd88a03ee3bc4b1ebefe0b456df2e49d58d77b8b5f41ee0c9494. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/PLC062247107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b972021675285fd6547e0c2e8d2c06f9a803e82a415a280dca0b60c41d8c39. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/PLC062247108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17796920fa177087dd3834eb1fa83abb87d068330c2f758904ffe09a3666e1ab. 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/PLC062247109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dc93f40b0f1beac7ce40efaafa528a63ffedc9813b1ec1979a4dafd9956e37. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLC062247110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf031110c684132b0ca9f6b53d3dd99629dad1b9276172bd90ecedde5fcf8db8. 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/PLC062421377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaee08d18f2935b4c50d398f14e116686901671e3dae619015b2bb36443e42e9. 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/PLC062419818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fcadd43e07e2d8f19fae5b107fcb1571f067d2b354e4b096ada37c87f95b6d. 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/PLC062421378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357eb6d2b34228f7b2714a0b2f2879bcd74afeb9620069235a10941fe13385a5. 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/PL6A22392483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09306d46830ad39961b143c8f7e4a6523e0ac3cfbb2182cc0ae474616cfefcb6. 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/QZWFK2312576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09306d46830ad39961b143c8f7e4a6523e0ac3cfbb2182cc0ae474616cfefcb6. 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/QZWFK2312576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59ae4a34ca5d5c01fb29af3068e4ed743380f24cae26de4b1160cfd2d697059. 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/PLI369876960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1078b6173382bff5fa77de2b7a02c27395d508f68b64388957138dd3408f0322. 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/PLI366767170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b922df29af53bbf6ecb5ee6498db2691e0bf8f5902a87bad912bd0315552a9. 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/PLI367659550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf97c65684ccc158c1b9805f5dbbb88b0d1de4ba44d930c16d59cf4995d236b. 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/PLI369046900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d86e8e98fb06b498c428f305ab13515c0cbbfdc28460c7eb5f99883d6b85f29. 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/PLI362463080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec48508fe57eff8dbd5667ac7a92bd81fa348cd88da0713ed6874e416edc9917. 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/PLI365926400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e5d82da8b2c7ce5d28e98552f7ad7bb1c3603d47e33e7eec99e7accbf2b8bb. 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/PLC062416423.