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 0x542cb867eed35e8375276c54e2fa24372fccd95b838a36514e672acb8f7acf8d. 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/9fa6c764-db35-4e9f-acfb-3fd0fd5d88d0.json and https://artists.proofprofile.net/proofs/artist/9fa6c764-db35-4e9f-acfb-3fd0fd5d88d0.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 0x0f72419f46d38a7915c35f5d356fd0129de38b3e3621e2731b80bf9cff438673. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:33:46Z), 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/QZ5FN2063373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b0977a7ea230ee04e15780926e43c2097e3bfea2ff86dafba229493d975a08. 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/QZHCR2100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc557319f29e4d0d98315a49bdd452f08775271a24783f90e444e1b62238aeb34. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:50:30Z), 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/CA5KR2481369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4ee8d1c02b4f27880904464bbbae776003036f78962ecadd4737d4c5cbc59a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/CA5KR2488433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48ac69dfd15535a9b09e48d75b68f64e62cbc0b952e526a3bb9f6febb0bc1d2. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:29:30Z), 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/NL8RL2447441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617362d2d12e36996ef88e58baa8053ef46847655837e6937d98830fa582f34d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AUK3B2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85121575a2e5a6402a96a2f4c8271d1048bc014d38ea86db38c80ec1a1106e63. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:42:13Z), 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/AUK3B2500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cce07eea598e94b9df80d7034cf5b0db584f4299502e6e679bfcd6ae5d9a3e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHCR2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d342df7613ba8898cecc86275b7cf7ec2a147d98e1ee3c8f879f2893b8873ff. 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/CA5KR2402635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f12184253fe971957624ccedb4487cf137f1d865b4ea12900df51980a3f91c. 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/CA5KR2377364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b0977a7ea230ee04e15780926e43c2097e3bfea2ff86dafba229493d975a08. 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/QZHCR2100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c39315fe15590a325713504ea34ab571bf8d3598b7d8893544fdc1473cb810c. 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/QZHCR2000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91aa9e65ede8c2730aa42dacfe8428f966fd3f85c4db262d9387e89d848ad6c3. 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/QZHCR1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357610e6a2ff16a5389cf9ddaace67f6c5988364ab78908b8ca8b0a87dc2ba29. 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/CA5KR2271807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b0977a7ea230ee04e15780926e43c2097e3bfea2ff86dafba229493d975a08. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHCR2100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9129301729a266f0e0457a1232f96e65ade1fda1d5ec3160c5bc67c324c6b2. 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/CA5KR2474059.
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
Bassweight Records: Syndicate, Vol. 4 (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb650486c6e9d04ff4c1cda8fe5f04c8471eebbbc76b4612ea90608f68d1f1f. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USLZJ2032749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12ddca9003eb6ecb579c0f67fd9ea4a56b4e74af6fc19103752cb9eab7ad202. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/AUK3B2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cc09bd70dfc7f12eb555cd906095bb265508d807ad06357ad8c4868366d892. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CA5KR2320835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d68c6d2caa1e06763fc10819563ee85006be89e23e6242921c008ff228c3b8. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZHCR2000132.