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 0x0c87448582b197bd542644082ab298177d705d60ccab6b8ac40f302295a3e13b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ff454e3-188e-4e7f-8ecc-c094649033b4.json and https://artists.proofprofile.net/proofs/artist/3ff454e3-188e-4e7f-8ecc-c094649033b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tango Feroz (Edición especial 2014) [Banda Sonora Original]
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 0x6a1751634a6171e6f70f0e792b822c68dac4c5244cb171b98074923ecda0eb9c. 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/ARA901400300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c1fbb15746875d0716b9bbee49346507663aed231f4acd2e059f79c607deab. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ARA901400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4d525bfea7ba5c6c7bdb532c6a8d974569dbdec61a3fa48423e0142a1969b0. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ARA901400303.
Tres Razones (Variaciones Sobre el Amor Es Más Fuerte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19758c4d6d2e2fa871a59ebda1fe8846817d86d4a26231c8ac90604c2bed927. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/ARA901400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a67dc04329c48b22998a329e9c3000e76810616d3e9336cf193331c626dce7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:33:45Z), 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/ARA901400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c16a422ec3ef2bb1195d10c01dcbb896050ba79ad9eefed3884ee27b6e9005. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARA901400289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10998f8b1cb035f5ec250ea796e03531098e623714e7612622c6f65ef064377f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ARA901400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdecd80dda4a6376a17f2339e0deaddd4f53519cc1560c3a54440568b823ac3. 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/ARA901400291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89357b3976c3252ed29ee85e3401cc0c42c296ff33e960c777a5e7ac599eea24. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBLFP2042623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48332001270f0c7143ca09b094efcaadff937276d67a9c5428236a84b40aa62. 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/US6R21325825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f03e2ff75fda0790e094f9a8f5e69b7d3d968f891c58e72a670ec31c57ecd9. 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/ARF841700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bf5974cce7f6ef1f454aaf6390b293015311222fc3a924e38aaca763216814. 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/ARF039501306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1b9cd32f8e0524e0bde7bfa0b6fb89322312dbaaa298f6f4288f1e3f4dfc9c. 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/ARCH20601017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cee4188b4b82d26aef5ce8ab4bc834d689e058b5d69d688b7663baeaa5bcbb. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/ARF841700093.
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 0x416a09063f104600c644992a2923f92a261372d9a465c1650578d8c3263e70bc. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ARHR91600021.
Una Celebración del Rock Argentino Vol. 3 (Moris / Miguel Cantilo / Roque Narvaja / Arco Iris)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9d317e370359fa5ef09ff243313c348c91203cf5da99fb473c055e1576c747. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QMFME1522823.