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 0xe67c14755db2cc393762b53d2b5a4942d44cc8c892c5bfdc318abb978b196043. 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/650e18ca-d31c-4320-a2d8-74ee89b35e3f.json and https://artists.proofprofile.net/proofs/artist/650e18ca-d31c-4320-a2d8-74ee89b35e3f.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 0x12d904b4b4dac0a1f927c534efd059239d39855d0d1544de5b6c7021ed6596ef. 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/ARVIN2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798584b7ba0ad54740e4c4b566220451d9b2eb37ccdd0bb3e46a5b3b0b56507a. 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/ARVIN2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdab1f963d1efffe2f9a47eed95b1c8f490f50fd453c6726c8c270a2fead8a7e. 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/ARVIN2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7fe2d6e70ddafb1a39f8dd82eb31180c54c10b47323540b564674474601e59. 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/ARVIN2100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb3d4a31480f47b972fa4b02b140ede02e79c999f47d3eed5d7a84d1e7b55ae. 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/ARVIN2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8ffa52cb2ffd073a22a962cc51cbccdc9da11ef019840d2e5d46a09f060820. 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/ARVIN2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72025d93716a0aa9c29e7fd3e9c223dc4e4a74e7e516dd0b760627ed52821dbe. 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/ARVIN1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c55de09ba2c8cc86e3654af115fee80c85ed01682d175bf553b6d95736781f. 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/ARVIN1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b325a87393d98e08dcbd59f4a597878faf7c7d4f7fd0f126fe6828b45fde96. 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/ARVIN2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956c328ab05a7b676abbd112789e47f804ea4df12acf41aad0fb4c2b8ca34bab. 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/ARVIN2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573da456c2527e39791ce1850718c0057cd03fc0c8acd7fdfb382221e64c8eb2. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ARVIN2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746e194fcf25001f5226d0c88ee5ed8b1b3978c8659a7e8de534ef6453653087. 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/ARVIN2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b76b88bb02e6e71749d7dde3ac8723f992fdf371dd7b52087859ba030b7e3c. 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/ARVIN2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d478f97b8607d37c2748c7d8015ed785776da5bb7e875d897b5595d3645922. 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/ARVIN2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccd474bd25d7500efff46291d189a00eb373fc21dd7f32417544fe696a0ad24. 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/ARVIN1900010.
Kiddo Toto: Bzrp Music Sessions, Vol. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bd97306df1697876472f3db1b4177acb313462680f2ba5e13785a15aaf2b82. 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/USHM81935634.