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 0x0a7b2da94e92a105a1077e2da9536bed17619dbbdb9d90d40328d8fd0cb668ce. 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/7a3e06ce-52d0-4c2c-ae87-7045b619151b.json and https://artists.proofprofile.net/proofs/artist/7a3e06ce-52d0-4c2c-ae87-7045b619151b.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 0x558724e41e4a94023e5152d74cc97f209df5a1e8b259d0de8f320b184bf44243. 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/GBKQU2251428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633fc6d3b1296f276aee37a8e38acb3ffd81eecd8d786cca084591f22ec51f9e. 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/GBKQU2401911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64422bfae4e95031640d664089f6b96da2fe7ba650ea79faba98261092e53ad. 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/GBKQU2435595.
Birds Chirping Is The Sound of Sweetness
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2b8fca7674d5868c31b2cda3c5d6f8e40a8d446d17322ed2d9135d6adae375. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBKQU2435596.
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 0xb870119f87218969f1467c4596c50dadc1bc9cc08244087b7a801e9124408e40. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBKQU2435601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d5ca09ca5f5cf2e9c4bfe373981714d0dda7ed892ef9938a1b2f97284edbce. 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/DEH742418112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc24e7a0d2f6a1eac69fbc222257d41481a0396cc007e56bbf45f9a8dfae71a. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEH742418109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2949a5f8432059fd4b07d9658fbb2fdabf7bef411fc82a9077f70c2c56f037. 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/DEH742418116.
Taurus Season 2 (More Than Money Less Than a Penny)
Before the Sun Sets (Saudade Selections V)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc930d6bfcf0dbc50504e3e5f56ec032d33ee589e299cc7f4fe24bcaeef01c5bc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEH742418468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719b835365c0cacad650125f69715808cda071367fef9b8443764208756c5b5a. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/DEH742418469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb7933f13efa7f6ba129e937bffa2d9f8cd3c44955ff4163df1348ff03dfaf2. 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/DEH742418472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc7108db18017e3af39e7b0bdb9636cbd9712e0e5645d47cacba93f339f38fc. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEH742504778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c78be127b8b704705c5b10e3f97cde18d23b0eae012a6697e48bd56d6d4c63d. 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/GBKQU2521461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a2f1703598e216bf423921c3244440ff1d61dc2bf331ca2c233156d5062e41. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:33:25Z), 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/GBKQU2521462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6f6ab792c239c333d08c3c56caedb9398645aaebd90bc7ff759484a7ef1146. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/GBKQU2521463.