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 0x172984ea6d5c34a9ace5b363f8ef1bf6cb9ed0fbfb927a67bd9fbe6ecc69a008. 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/2a35f439-6d4b-4d75-81d2-b1e9ef22828a.json and https://artists.proofprofile.net/proofs/artist/2a35f439-6d4b-4d75-81d2-b1e9ef22828a.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 0xb6e7e38b5cca525e12b8dcceefd62ed2ec3b49b13a2914380e48133e21a7c765. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZBRF1845804.
Beautiful Sunshine (feat. Biggerezo, Ignacio Torres & MC Melodee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0d363fc3cc641d1d3f5819c790b39f4b22d7c4131c2d29dd1748d00ada4e47. 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/TCACF1539159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d9330c1faa35d46c150af817272290e6397e182f892356c8e5bbd6d53351d9. 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/QZWFE2422393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2d7dad5d62f33394b4f5cdd21eaedbd3b63f05dad4ad38e091b8b8371f903d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES72298376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33146f880a4b3066d276ac2d1f3aa08acf8e8e282d29c289b681a3915e56fe48. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZHN42242891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b1b9687aee4425923cecabe5efc0d2f4a8ac9c2219b47d0c684d0164773a78. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN42242892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c189deb540de78c2d58f736f44478af4eb070bf7d9e123e69e0d85f8ccd7c5. 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/QZES52242551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72d7c7243011da29d84c6472d57a93b2351af71411f89f601909f57f5faf60c. 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/QZHN42242893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9ada109b022de1d798218ad88764e0ab39f2ade2cdd59277b188aac3229100. 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/QZHN42242894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e7bc94a417c0165dc5d2060199059c71ee44c6bf2fb5351ba5506358ddc624. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZHN42242895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9ad52878653e506eece6ce522f73ef1eebe9d21c4d82ae3640ad9b0f404180. 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/QZHN42242896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd43291978ebf6304313b59a5ff0494eef8de4fb6ae658ddc7eaac7a7e98c6b. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZHN42242897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee384b62d07ed8be6e38085bfcc384db7e9f4d364f7870ce280bf425d307038. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZHN42242898.