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 0x6da4858e17e81690737287a67dcad9b6d3f14a55bf8d719bb5b834af00c0ed22. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c19bc1f3-a501-4df7-ab8e-3637c0fb142f.json and https://artists.proofprofile.net/proofs/artist/c19bc1f3-a501-4df7-ab8e-3637c0fb142f.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 0x6cfceb62bbddfadf655bc54b10a1aed76b039307877d65e57aa4bcab8d973c58. 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/QZNJX2157898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010ca121237a0bfb0898569db69eab4bd1588f9afa257065947243aa00393a06. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZGLS1927213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16fb54742720dd0ce82487cd46606dc672ec8bfec07532edbc9d945f01c1f0a. 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/QZGLS1927214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12fabb1e2336ffb1ec685cd37a8528c3ddc32dcb223fbe37b1934f9827b7bdf. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZGLS1927215.
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 0x9b6b94ab2965a6552536deb38245c40fa3de7bad760af933c4e55ac115b94102. 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/PT0HJ1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a72920be7396f357f65eb76baecb655b7a04be7e61ed6d736977abcbd72b9b. 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/PT0HJ1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6681ad66b38b34a04ff1ef92c01e5d35499f939c3e7f7bbf5d273337d2185a0c. 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/PT0HJ1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cef4d84e017dc335b8cb4c0c81d0df014021155c3837a292e06f5e895cf2f05. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PT0HJ1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773b35777da48b0085721d142397b08284a339a1f5e90e947eb1f6357fa2830a. 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/PT0HJ1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8299bd0c548916f2c9658987bf5a20221d5bbf44670f2681363016fa50f244. 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/PT0HJ1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422e752331391343565597c821fb9373617d24dd2fd832bf97928a9d5842b494. 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/PT0HJ1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cece253ee256bd49428d815df7133caf5ba2952f0ad6caee8a2ff2a358a605b. 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/PT0HJ1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cd814ff5ab5e687dddbb13b3a06d94cc5654a7601bda329a3a8dc8450a5161. 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/PT0HJ1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158502b15f0bb8b34366f0ec7c6e418a9879c668c503d7b021367b04621344cb. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/PT0HJ1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2dbea3470626a0d58d4acbcbebbf1ad235aee952795bfcd11852fbea135fb4. 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/PT0HJ1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe708c6ead02965b231e7658c0cd5026a1d34b31f909a2792e4bbf73014c64f. 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/PT0HJ1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84be5b986c4ab2187196d221d92651d94169bdd6d477eceb7c80ceba67a05e72. 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/PT0HJ1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf762ca7380a56477736159789dcb6e1355a4cdf10bdd163147bda9608ac2e171. 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/PT0HJ1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b0984635a6dd251017a35b80f48df11d4c534693f04f25b29aef74edfcfceb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PT0HJ1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58d00b937d1194cf91fbe3198a2bcaa594acee183d54a1a6b50ccdf113a446c. 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/PT0HJ1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c08292d42b20c28f4b6bf989d963546878ad78c37df9140174927ad205dc852. 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/PT0HJ1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2dca37cfaca92a4b08f36639416274b99c68d7b895e7edb77b1449b133af80. 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/PT0HJ1800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2decce3dd0595c2f683b1a97e94d8f31ecd85de7b172a6ab40d91377d1f35157. 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/USCGJ1617646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0308902042d2f6b2ec0d66bb1af440ba06bd5be0eef14d6686047dd7e9bba7. 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/PT0HJ1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71b1cd6f251ed7756a3c65617894e2239bc53a1ef7101e6985d3a5a85aa9fa9. 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/PT0HJ1800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf865db87e66afaa85dc3aad9dab6082c26d4b59e0d88e0910f44d4c9784c1e1e. 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/PT0HJ1800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f07ffac0adcca867853600a208746fbb69ce7b081aab944703ed2080a166ed. 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/PT0HJ1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5877d3f96ed264e458ee005b68134c509d9d5c39d2d03a54459c96b831eba3. 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/PT0HJ1800028.
De Experientes a Amadores (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9490ced2306ac1aa7afbc2633efdc1baa2bfe5bf4ba0fcd6953681f859cba51. 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/PT0HJ1800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9c221d97bafc733de19fc52ddb145a2d33c13906e42426d6d12fc5226d9eee. 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/PT0HJ1800034.