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 0x96bfe923f5c9749e72599909e7651ceffb7ec328b5bf6805ac8e4ab43e47fc29. 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/83ce24ca-be45-4e7c-a8df-abf3ea1f68b9.json and https://artists.proofprofile.net/proofs/artist/83ce24ca-be45-4e7c-a8df-abf3ea1f68b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dance Instrumental Hits (Instrumental Mixes)
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 0x93f76cdd99232feb8e386328d6d65949195a510cce9bb620fd3b1f0b10c4cbb6. 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/DGA0Q2493676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426a0f5ef3a5431766b0a72fc484613677f636a86bd79f991a11ed5f8bea91a8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DGA0Q2493684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4604c7e6e6d6903fde9bd9b07827ffd1215b654a7fa2c3ea250af572c42f1651. 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/FRX762499809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e4cbccb1b580db13cad603e903ade0771223204d3bf3a3ee457f8d35582f9c. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/FRX762499811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665a99dba20227b55a1f780fa2de305a48d5702f70e39e661931021f68ca4de7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRX762499813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6714960d446f577443af1347521275e4a1bb83e2e7943306b29fe23ffd23d0f. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/FRX762499814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0688d47dda87f23b4f5c81e0674b6783304029efb7ae144279ca5b8eab31372e. 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/DGA0T2435207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6113b0090bfa15928f8d94fb6b6a88a0897e191031147d74ea3b13dd61563bb1. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DGA0T2435208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174df637e03b0e7f724a8293748e5bc05a18ddf7a8d919ca878f4ccff86f9870. 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/DGA0T2435209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7997bdd6f52be50ec8cf07fd6b97044294936e82d1f128e8f4853e38f01776c. 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/DGA0S2489268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d09fd1df422973ef154f9990cee35c535468814a81514f058a31daf13152dc8. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/DGA0S2489269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7588ed786bda31f8197132c3568b852b5a34a9826c2b640bb37a80424facff7. 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/DGA0S2489270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935be71f29f368ae42d596502408ea602b38269c87536365ccbdc7dd231a7e45. 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/DGA0S2484231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb430c7526836c332bdf9a3b305d962523e0e33d7eef7bfd06d3e88ac888682. 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/DGA0S2484232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bba0f402717aaf976c3aad3964bf6f450ed1ace32a94d216775e2ae58a4631. 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/DGA0S2484233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f544c70644fd50cffa46825c2e09c581515a9356746cd4364bf6f2939108233. 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/DGA0S2467142.