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 0x82f15d066b3870d63bc2997ba685d9d4a59ef1b3e4c5c989d76c1d75a9b0020f. 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/a85547fc-db8c-4eca-ae8e-407c88dd7efa.json and https://artists.proofprofile.net/proofs/artist/a85547fc-db8c-4eca-ae8e-407c88dd7efa.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 0x81ef52a940a4b194896250c96446197bff4bdbcc1202faa3e454679501be41c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARF412000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb855442645065fb27645e21d7755cfc0c4bca302729d78c23d1540ada8815eb9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARF411900319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71608004be4b6ce7b3ff76de695bd712e991bf1e1626abc92b5e25da552f1234. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARF411800236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13cd3ff16eaedb02da27fff4a1cf697f6739720473e85a8340361db63854e37. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARF411700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d3168368a097b18b65ee9896168c662e403456987e631b76b5798fb5c77cbe. 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/ARF412000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d29fda212e050e941ebc24362f82e2fad2a3a0000be34c30e6e6cc33f64074. 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/ARF412000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e8f8845825b982f8a61c696172d33703feaa63cc18ab668001bd5373360a95. 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/ARF411900151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79ace56c34452856a7c4057ded7b5efce6c7dc078c3b99f3d0c7b1373108e6e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARF411800237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5f12de81b6963e899b9581a96286b1ab19c113eea779fad8785c2a64213346. 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/ARF411900005.
You Can't Always Get What You Want - Big Little Lies Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd851963a44660c4ed04cba1d1dfee85d56548bd22fc8a833b1287a1469fe4b12. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF411800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5045d5bafcd52ba3f5025b6673fc990754407688c076c5c2f13f1da8c7f07c23. 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/ARF412200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6b609fb4820fb124255f615345bb725d75e231248a4c763e134c10e432146b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARF410600525.
Vintage Café Vol. 3 - Lounge & Jazz Blends
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7af80c795dcd6c01f46df9d4c689fc7384bda4dc1f5d370fc1db38fa9bab0d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF411000506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65758d83759a7d34d86dcae3d03bc4d8ae098dea274f898fa3aa607d26536f2c. 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/ARF410500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994fc0df98822a2004a7f12d98c091172a04722aad50bce3d744143365f8d952. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF412200388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb59ca0ef8bf64a57c801df2410aba5c32c1b0e29eba3925fa8c0fd00855c570. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF410600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388e833ed7c1b7387f6d84eb3db5dda5c46dd08c22f17cf5761f008803a91f04. 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/ARF412200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6b609fb4820fb124255f615345bb725d75e231248a4c763e134c10e432146b. 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/ARF410600525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c72871eb08bcf2d2dc339417bf88e7eb62cd1bc1e02cbb59caf4b6909c629e. 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/ARF410600424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ef52a940a4b194896250c96446197bff4bdbcc1202faa3e454679501be41c6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF412000065.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6f7d283d331deb894d6d73dee81ef25c2fcb44876ef36b209f704fd14edc45. 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/ARF411600232.