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 0x16789beb133563c26b8e552f271e25454c09ee1ce6701417b03f7e537226b386. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac86cf4b-5178-40c5-b00f-5c250812056a.json and https://artists.proofprofile.net/proofs/artist/ac86cf4b-5178-40c5-b00f-5c250812056a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Covers Volume 1 (Not Always Easy, But Always Core)
Covers Volume 2 (I Can't Wait to Not Make Any Money On These)
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 0x39d19da81d61d94185b9bfabf39168bc11b688bcbe33fda3d5f4f9644e760806. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZRP42189632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3926d8bb55131f3e33c3d1133eca602ba09556d7e4b1a11bed754ec3d3b31f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWU2263403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8cd87ec302b2c5c8aaf9ea7f42c91b1e94378ae6bb3c9a9e1909ea9c4a529a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWU2263404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f69170d9a4f202b3cf1b5a2600adc5ae0a7a068b08ea85cee7970f7aada86b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:29:41Z), 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/ISRCQ2263406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942f6cf5936d89491ab7c1ba78fb00257d9449425f9492c195c0a6e8e928f1de. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWU2263407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e348cf5b8cf41128bd8e1ad03056a2d73b7b78d3900ab15255176f7be855436. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWU2263408.
Covers Volume 3 (Songs to Play For Your Dog)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3921b580a957ad6f53b9730924ab4714bb957d1a527ea47c5866c27d29a0897e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6H2351129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbebd9e1de21e932d60343b13ed16f7725428ed4d0ff853c6701f211ba2da38. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:52:36Z), 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/QZWFJ2393610.
Covers Volume 4 (This Album Has Chao Karate On It)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3accd0077b8c02e890d57ebaf9bdde2cc991f5cf86d1748e107a60023490ade8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:23:23Z), 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/QZK6Q2479598.
碧天伴走 Hekitenbansou / Mas?uerade Rhapsody Re?uest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b679872f95efdb0ef3abb9cd7af12fe4666890afb7d938062be62f77b11b0d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWX2490046.
Long Live The Queen (DougDoug Rosa Art Contest)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8614fc66aa9b7cc30d7d112390e20b5f01bb1294e4e697a5ff210a32ecbdf097. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN62538423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd356c1bbdfc01981c97a348684875a57cbd9a96101787b6481944a563eb5b4a. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:24:05Z), 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/QZHN62540008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4becb0575ca5dfb537a0980cd409ae7dd5cdf84ca7258b1993ed8cb1ba9001. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZHN62540011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98679f66ccba29da1247581b348d8238efbb511babb377f4b99bb6a00364d9e0. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZHN62540014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab830ae9d81e5fa44a02540af73e875e1be2615c6514c5966a85ca314c09ea. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZMEP2593919.