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 0x72578d62fff4e7c552514cdd7cac3f65f32e3c66194c1ad6de677883b6ad9193. 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/b68588dc-591b-4a73-beeb-7bf35b2e6451.json and https://artists.proofprofile.net/proofs/artist/b68588dc-591b-4a73-beeb-7bf35b2e6451.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 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 0xc049e9b0dc0234af66610018a1283c398650011c8be400ed130e92aee0fba613. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM6MZ1700304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c63dc378ee969646918ad341751d9e21166eb03af35d016b695f2af517d611. 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/QM6MZ1700305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19004b7685cb48679954b46d1c7c7aa25bc7fdd282910777481f55040da01a18. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QM6MZ1700306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49be21ceee7c58e4ac23479151e70a02b5353a0761ebb8516098148c1a58e436. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/QM6MZ1700307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a148a1ed0d44ac21bbf86f555049d1c3e6fde6ffd0ed94b975750b2c44b877. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM6MZ1700308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8ba8582860cf5be8197533ee4c49a751bfb1c7fc877b10051b8e5a773a9413. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QM6MZ1700309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568f06ef933ebbf4865c5bd86b240dd7a91152e1ac463afe94990baa34ea4cee. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6MZ1700310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0741f631d470a046f8c8e0429cc827ddd1d527d63b530da49c29f0ee3acf274. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6MZ1700313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e3b34e9198d9fe6de37a57484db8272889783a1f41b7a5f75ac0271fcaa804. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QM6MZ1700314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200a759feefb65a2df5128453474df44a65979820bc04bf6104c8c68fc801946. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM6MZ1700316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99049272802fcce53837fea3a275ce0e82b02ac1bc2e3ba5855d2eebdbb5dfcf. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QM6MZ1700317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aaede177acc5888a918f339136a6215fcd5a4a34573a74659e7bdc2d5421af. 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/QM6MZ1700318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0ae8b6fd1a20835b65e3a53d3d8f4f9ca791fd98c12a669b7084daacf10352. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6MZ1700320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a7256b31311c4cb76e091ad653343d05c0696962645e698a6a98cd0d3f172a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QM6MZ1700321.
Los Viajes de Bowa (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeaee3a1c8253cf9231b7d4ee1a07a2fcae6f1563937fd68e3dafcf79e5e86e6. 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/GBMJG2319367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f18e7d153ef63fe99d20a94ca2f29079323999b63265e1b39b2547b6bb5b293. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMJG2319368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1189bb67a1b2aaca26d1e198060c0e439a22001ff234c260af50ed0550862305. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBMJG2319369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122d301261faf60683fa4b45632cd77682052642e64c0a58851c7fd39b2cb3a4. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/GBMJG2319370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00041c30a545676a4b949c674ede87429dfb8e67373900d2904b4afa5a60aebb. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBMJG2319371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125fcc84960f3fdfec1aecdeefd25fd1c55cc1d58228096ca7ccffd94c5fd096. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GBMJG2319372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a2f5bd9fc8db4354c26196e059ea2d8d45ac95d1353ca78e9aa638dcbc7b3c. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/GBMJG2319373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd33023025344548278e42721141d8812455cd1a3b2c577e21710c25f0be0a6. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBMJG2319374.