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 0xe9722b7f2fca6e2b656b8743e8bae6def4546aa2dcdaf235f3b4aedb8d13fca3. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4b3bf4d-cb44-4a42-bc93-b5c0d0705422.json and https://artists.proofprofile.net/proofs/artist/f4b3bf4d-cb44-4a42-bc93-b5c0d0705422.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
lovers & playing favorites (ampir3 remix)
lovers & playing favorites - ampir3 remix
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 0x2abc573fd86e832735b20237d4cbade4404a3aec5e5426912df13119579da0d1. 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/QZES82106647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84320e1098792227a757ad11042de6102d209d74b1e645797856fbf36c931211. 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/QZMEM2027862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f0986c6931acab3ff3b22a49ca1dd21d4576547913e3d0f972b74226ef5148. 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/QZDA42023559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa283614b1f0b838791366f6443c261bc1716fdb8e543c5c4026a24ec6508477b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZHN71913218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e07b9dd2f273a622058e5d4e168476a708cf293dd68c887946feb91e72cbc04. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/QZFYZ2078653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3f4f822a934a84c0c02c48b9956f145a55b8c64a132f8e62e008ae3f361d01. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZHN41949186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5392e50eeeef0fbb46883b3d7a5d5ec4d3478ecd2d946d313262d755d0384c3b. 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/QZK6K2087796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dedf40ba59f1e22634e50c1f6892ac3f16ad2e6555a10b06defd93503291f9f. 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/QZK6N1925018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed04ae3d9d51f331a4497d1d94665d3cae064d736eb58a090939fbc7ccb2976b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZK6N2010653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf47f0da12e605242442b066e25d3c24e454a8c83c1ae3dcf7ba42afce4be2cf. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/QZHN62037425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40ad5eabe7795873f715710896dffee0a48020d1bb5b1b7d383b7d2b3bfadf5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZMER2025710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab910f6111ec993aeb504e998c784643de188c5d16495ab1e8812ddf9eb0bbe5. 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/QZNWX2051824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe744c1fdb220cdb662c22a5202a5d76c7d46f730338618f9a00d072db208586. 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/QZNWV2165752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4795b96a66a260e7d055ab0d7a30cbe1995458c7ba4347d98435506d3cb7b94. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZHN62189912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9eeef0eeec1b99de5693e18ec1ebe718e689dd9b5843b3351403a3116bb82c. 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/QZMEP2019809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84320e1098792227a757ad11042de6102d209d74b1e645797856fbf36c931211. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZMEM2027862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f0986c6931acab3ff3b22a49ca1dd21d4576547913e3d0f972b74226ef5148. 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/QZDA42023559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e07b9dd2f273a622058e5d4e168476a708cf293dd68c887946feb91e72cbc04. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/QZFYZ2078653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dedf40ba59f1e22634e50c1f6892ac3f16ad2e6555a10b06defd93503291f9f. 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/QZK6N1925018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859c24634c3d8b89f000accd6609faee15fb85e3597652949c9fc82edaf9b860. 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/QZHNA1999207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3f4f822a934a84c0c02c48b9956f145a55b8c64a132f8e62e008ae3f361d01. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZHN41949186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa74d723d998e8f14f3f6d97d76c1c8a53a574a07b11e8ff0c1e5f590510d4d5. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZFYZ1903657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832869328ae70320522b2fb31cac88059ea066f852f46a5a727d80e24e2067f4. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZDA41930016.