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 0x329a498d864a1f8263d37425175bf45cf8ea86a3512bdab2fd0cc82b74598e83. 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/e43eac65-a136-45fa-a7ab-db226a475d33.json and https://artists.proofprofile.net/proofs/artist/e43eac65-a136-45fa-a7ab-db226a475d33.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 0x005c459a923a869239b28f4d301e37cdbd96f481b7f75246b1426644880af9c6. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QMFMG1476893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d882b27ba6210467a0d41482054faf903aaaa975e0c2b04d1bd99fc4bce1610. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CLEP21600753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf473f48d9a2d1974d4bf8834d2593c8caaf5fedba193bbdb2c9743451a4ef6. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/CLEP21600755.
Don Diablo (Música Original de la Teleserie ”Un Diablo Con Angel”)
Don Diablo - Música Original de la Teleserie ”Un Diablo Con Angel”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a15b0b5ab12bdfee3ef52c9bf0573cceab8a0a80d1d4fdbf72ebbd941a3f41f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ES71G1643715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2f39c5d051b70db67250fb25ba25c5b1289243f4dbeaac4d2b347bb995acd0. 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/QM6P42037343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb331c7c0de5509873614a7dd97ca65b0d72b5679f58ae04ff062640ac94d1a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6MZ2211020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570ef82fe6a0407e90ffb65b7a81a39287d7884ae799f8fb213d9756e724b883. 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/QM4TX2309688.
La Torcacita (Homenaje a Ginette Acevedo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd9cbcce76d54d68214df7978662b5bb460a664c6ae4a3b48a7acb151c13c58. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QM4TX2498413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736374439803f581c27f8165f4927e0003e758d44e259edaa0dc44be5c7459cf. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QMFME2462743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7c2ec15334787dbdae298dcc09f6b2dc2a41d7c8ebf6288308f0beb823972c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6MZ2533587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59af2f7691a0dae63242e5b41bc9647eb18a57b93e861adc77b2d15cc4514371. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QM6P42508366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf091b837edd5d20c4b3dd9e4337fb1c5821b3bb991675ede7e6d5167d9e7b22d. 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/CLNE21700565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e485372cd621dba3d0d9d810224c08b23cdd44c327b164400a0769b0320b2a7. 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/ART0G1806015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e485372cd621dba3d0d9d810224c08b23cdd44c327b164400a0769b0320b2a7. 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/ART0G1806015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67449e8905b6c13226564edbe34fe9418c9cb0a34f0fb38247d43e482040f31a. 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/CLKT21902098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf091b837edd5d20c4b3dd9e4337fb1c5821b3bb991675ede7e6d5167d9e7b22d. 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/CLNE21700565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167afa3479e6c3e52bb2a0d2b977af99a4ae4f5584588e6ea21e8caaf6951259. 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/ES71G1852705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5560ad489871155a3d522cbf6259ad8db0663e7bb2e2d680b50149c4007801. 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/QM4TX1714249.