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 0xd8c4b7be80f4f71571ffdb67479d518a79d6c763c35831116e6a1ed62660919c. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2a1f8ea-1642-4f0d-b40c-1a5df21e17ac.json and https://artists.proofprofile.net/proofs/artist/a2a1f8ea-1642-4f0d-b40c-1a5df21e17ac.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 0xe21c30e6dca669c64553ea845dbd880eb8aececde68c0c72f4d4d8c5a4349786. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHZ41958136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79403ffe54c016d3b30412ca8efb8c1012d53347aff0d75f3ca570f2cbbd1fad. 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/QZHZ41958137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be30340016136dfa4b8f8e35db63cd3990b52b4e8ff0b00366169302095828f. 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/QZHZ41958138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079efad3d30a64ccb8bb6909568dc8f0dc2f0f4a19b1120be0695cffd35fd735. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZHZ41958134.
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 0x5c1dc2878398d3d246c940b2cc84b176d8855a7a7bd97988b8828545a8a95d5c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCACF1598638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb309223132ef53bf8d063e79f6d9b1629dd4073230505296fba96bccebb6ff9. 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/TCACF1598641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6938dcf25496e4abf28e484ac19f59a2961691ee833165d2427c494fd1577a0. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCACF1598642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe837df5f41c510ab6fc2a1267a9732f85726fc615d820f37cabfd1a021ad1726. 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/TCACF1598647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d2c2aca932ce94baa546bfd1616ee42b4a897dd24bfc349b6818e684b9b31e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCACF1598655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c15a726efa89022d438ba6fe11b1389172091bbfdd965ce6a5594dfeb20d62. 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/QZW9K2290122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06eb2d3d393b79c1b3b6fd787f23a4a2b9c9b01808361e2412c12000e642e24. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZW9K2290131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd1517afcfc1012a95f19ec00f94ca79562a757dbc5c0730779527c09000ed5. 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/ES71G1704892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a38c5f814618c88e9f0372272b457008be53866a83322edb828cae8613b746. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G1704894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53575e37279e525aca7a7e03cc9446547bbe6532fa38bd2380777acbb89ce604. 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/ES71G1704896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c590abfd8bd1a839666f2cbcfb9f168f6a3def385d220683a99e69f33ee36ce. 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/ES71G1704897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a4efc921017f5a55f7a9f2e08395a011bf75dfad3d4729ea7941145032fd12. 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/ES71G1704902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b082f52f3b9d3644ddc496908f870c8b4a97151cd99691a4109ec1bf7904d2. 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/ES71G1704903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067f96396b4827c65296b6cc6f9a2b5f725efe59bcd363e9253f8b0f3cb1e00d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCABU1423064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82f71cb55238b60dbdf95058c5305322fbe2e0a1b19421d71e7db1d1238b2e0. 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/TCABU1423066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0784e198a984a4a771b91e4c365287d80cc7f42a5aee8b6f2d0d0f7fed3e744. 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/TCABU1423068.
La Primera Vez (Con J-Nics, Sevenstar y Rulo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6cdf6dd1489cc5d756082403450837f3cc407356a39970ed50ca885aa73afe. 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/TCABU1423071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd8b0a296a859d64b947b8462d524ed576fba542e5febf27fad999b77b8dfa7. 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/TCABU1423083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf792df63dc8d1affe7806dfe61d2716bbf951c6ed731c836af1efe4ae30c3ec6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCABU1423077.
Y Noschiste (feat. Dr. Duck, Jorckla & DJ Spo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64c95aefa8be127844420b49235c967cc767b3c62517b40156b3c1a7fb647d7. 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/USCGJ1628216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddf621e619c315ff882be90a33e55471bbd066d3ede2bded59f8fc2fae2a760. 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/USCGJ1628223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b5aeb590b42a76c4207f2cbbb9c34008956aff1e295cb34b03d5149653c075. 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/USCGJ1628225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1108d085a2990a88f780cfea7e77741b58e7d5c03b404d03174dc7db069aa773. 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/USCGJ1628235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950e6096446984af44810374d46cafb65c8b25842e384c50480f98d86a44d42b. 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/USCGJ1628236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dca79740042284dae664bb4976b664d58056ce1e565bd74479e48b75bded1e6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCACY1742208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8034502ab8094fa9c8db0bea7419c252e91c469a37126dec6791f8876ea4c0d. 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/USCGJ1659135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cb1271e39eccb5fc1da4ed37ebb99876031393c74e7a96961260e1d30f9feb. 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/CLNV21900426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e62a2dcf6e9586a994020d700de970d2296793b7431671bd73222fea64bd52. 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/QM6MZ2003004.