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 0x066ddc7302caeb0ae3e0500f31b6c963aa02f2282efd34f7aa7f853e61402e74. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cf0e165-3fa8-41f2-8bfb-efadb287057c.json and https://artists.proofprofile.net/proofs/artist/4cf0e165-3fa8-41f2-8bfb-efadb287057c.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 0xf72e7170dab5c46cf3a1b9bc95cec7563f76df4fcf9468200059c4eaeae689c5. 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/ARG601011704.
La Canción del Brujito (feat. Charly Garcia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bacf8b8a8c055587e73ebf6b0dbcac5b574d1443c4e27b88be6874938a4f806. 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/ARG601011707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512b75481af9429d327b1cd3cde2799faa8e1f6915d9acbd5b94feca42884577. 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/ARG601011708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c148026ce1c7ee4b8e827d5dc07f437b4ba68fe7eed5e8ffa26ba844a5cadcd. 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/ARG601011709.
Borrando Fronteras (feat. Roberto Carabajal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7bd96a11f0a7d2560f1ed6c61e1ae7672b89e1ae11f1929b0f9339f9c5ec59. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ARG601011712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37cc5add72f1b8c25597f0c081ca06103efe7e0814eee3c9b97e3b199071b78. 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/ARG601011714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ea5f5971cb6a55aef7a66e8e0a4dfd086a288f281ae8a74c5f9be1973752f4. 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/ARG601011715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fa2f311557f45803d71d6eb7c8bfb52127a117899a6cb6a057aec12f3efafc. 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/ARG601011716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030d976e1dfea91b0ca7e8826be9f2cb34aafe0536609a615fefdd1c80c556f2. 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/ARG601011717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1355ba7d55a6a20f0ba5e1cd322aa89740117914662f012c82590e8b95711e2. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ARG601011710.
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 0x0dff2e5658a01b18cff217a3baf5f166ccbefbef34bb35d2f78a25cb110865b9. 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/USHM22116738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2d5a9ca45c07b611cdf94d167c08f811bbcfdd81ba2b31863b23432ffc18ba. 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/USHM22116740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e71f13cccb9f372291617b97785e34f9cac63fb727dbe3b2a8be56f3cb3755. 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/USHM22116751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c96fc3729d46c3cade3aeca6ae56f64bc2245fe025a36dd1a9c0f9ef0b6760. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USHM22116739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad0c0a6301bbeffe7a289b5ebcf8b2fe938f846596b559f4f1e246fb523f1e2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USHM22116741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4082eb80b25ced93a4cb31777f8905351beb8b06c45f041125cd4a23399fdc86. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USHM22116745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27c2450759cea874b6f0028227417af20a7381e3595698f227388db6e9f5b5e. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USHM22116747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3221441b471d8049db2a28e4e1cc0d9085e2c5071229d34bf9c80d602dbc124e. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USHM22116749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf370c09b6ca81c63c1f5fa2b93110e290f5f9000e4e30a9905e615ce8b233ae. 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/ARG601200704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec085312455f0d8c323e80905a8a33d79735d68d03de4970eecb49496c22a5c8. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/ARG601200706.
Grito en el Cielo: Leda Valladares Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9366a3db0122545ec8683f829c6be25fb51f535a360684466d76b6faf087d1. 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/QMFMF1581820.
Vidalita Andina de Catamarca, Tinogasta, Cerro Negro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaf364ff5436fb7f3d736ca25bfb2d8539c87da9b84c99565f4e4330dc0e4d0. 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/QMFMF1581821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ca2a86f95dbf17b0087569ef5ba7488255d275388260b8d855a7b90bf015e5. 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/QMFMF1581823.
Grito en el Cielo: Leda Valladares Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19e7de7ff30effc7bea8f5c9f42c4f1937c067cddc968c6ebd809846ca26296. 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/QMFMF1581859.