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 0xce28ba9b7b37d59e668069f959777f6bcb311fe846bee2b754edf0a5de8bdf25. 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/23e1b6f5-736f-43fb-8a2b-002f2d1fc0b4.json and https://artists.proofprofile.net/proofs/artist/23e1b6f5-736f-43fb-8a2b-002f2d1fc0b4.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 0x4fff8efdd2a20efb2cfea260f3043c6e4cc08f775bcc8729f1f96ccc712a0af7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCADD1732193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4be5db1e680dd215ae0838de843df852dbfa0b9cedc235b70cb0a7635e0e371. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCADT1843122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a10ea251ce75ce4e2074d9c7511db172a88a02a5735f3821fff789ee9a9f5c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CA5KR2136718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa409f42afccad169b9632a357cffc0675140dc91965c463392257ccd1c77f53c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CA5KR2136720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167306baff6fb2a633b377708b763fb4c6c77f79de45dd8b2be1d656403825f7. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/CA5KR2136721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc8f88cc2fa1e3dad685ac81a197df563924697e82e2c0253df196062cb90fb. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/CA5KR2136723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc7591e27cad9a840a2dcb7c7d9e07e7017d4142701387f5b8d88ac155e0106. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/CA5KR2136725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa85eecc311cf916c9dc36f1cefcb78e02c4900a9718ca88753d04d26f3b6540. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CA5KR2136728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b2612d17c9fe02e7ad56b0f0ca9283db4544b8ad0eb1a02ecf89220053c490. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CA5KR2136733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc444d32c92bd078a8063e4d6fb0c28289108c5b9128f13b5aecf4d5ad5215c35. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/TCAGN2234764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120e1b458498117b25273562d32b369d84adc3704d8ed070a55994da41aa1a7a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CA5KR2351415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fd7b75f2efe26d28759e91662556c4143405fa04d4499d6ce664f47e6a4db0. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/CA5KR2402395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135c885b9acc0a03047366a307a79d12f06e7570fabd60ea2fb3d4302809c916. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/CA5KR2431224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26e3e472813c48d20228a1dff0d7211170b817c9a91315c0c12c9e23c09a490. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/CA5KR2437684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b35fd544d7d2dff616c85e828195f05a975c0fa4eeec26fb4f97dc2118c1fe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CA5KR2467464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c1b893831a1a0f22926ca1be450ef8c2edc22db8dc901737081be43fe40add. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTGW2400948.
STYLSS Loves You: Volume 3 [Collab Edition]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1bb348275520f64aec53f1542a41e4d1fd785534c150cb3d837ca8ab1d6a84. 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/CA5KR1841578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cc623ed1e8f664031d8aa4e400619a0fda03f8c5bd38d29f58cc20ad679e83. 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/QZK6G2080559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b362c28a7699e4ed3f5de1b5420e4a0a1a1161700ecf558a351e2fe6d14a52. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZK6G2080560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1409a8d4e043e343afe2cc5cffe2fb5254a00191a52f364b12fbdb4de86a2d. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QZK6G2080561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558228a65ac796f249c64ff82025e44e1ea498760ffa2613f080be5a878d5bfe. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZK6G2080562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31e0f9a1ef551cb4622420e86486b96874eedf0e9c831fdf15cdd915f748b6c. 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/QZK6G2080563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd7b0df8260b118c77224364c3e93b68ea3281c7882d47353e1e9ca316f642c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZK6G2080565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53916531d6a58b92f0b7378e6dc95524c73bc3df28f1c0e3eb6120467a11572b. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZK6G2080566.