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 0xb96dac623b6c4ebc682e10d522baa700a17422962dd7d6cdbd7ca581073092ac. 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/5c86a0f4-dc51-46b4-bb8b-fbef93d7af28.json and https://artists.proofprofile.net/proofs/artist/5c86a0f4-dc51-46b4-bb8b-fbef93d7af28.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 0x39c11dbb2fbbb2feaf3f788ca94008f9121966e3ba6c96ec4af7c50ed3c2c4f1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USUM72201105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e333e782dc9c80cf71cd7ee8f4c29dd66616aef4f5ab32659f895baec67904. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USUM72121005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631c82ca665dd892a6c970a381d64763c209fdec1475443b46e6db930ba9224a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:37:38Z), 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/USUM72121006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94e76d5fc285627f9d64f8605ff58ee8cd572663fb3220a81a3e9e2b3ad0b3e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:08:27Z), 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/USUM72209349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c91fc72f1199a55cfc066ca85332cb4e83c5a97a3c63d9a9f4032d499249a1. 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/USUM72222470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1922cc86bf36e7881bd4da037665034ae8fc60cdd8aff195a9e10eb7864146cd. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/USUM72122915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e333e782dc9c80cf71cd7ee8f4c29dd66616aef4f5ab32659f895baec67904. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USUM72121005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5505296275b6bf2475bcb4308eb29ec9e698e2db5b43e765b23504c1dc855f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USUM72222471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9663cdd7a6e7c8ab774c2e87aa9aee160ad7dbad3bb5e99e8f4379764eaf227. 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/QMFLS2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50eedcbd7ab590c737d1b9a6e8064594123d8edc90fd5bac2d934ef4396b340. 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/USUM72114223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9663cdd7a6e7c8ab774c2e87aa9aee160ad7dbad3bb5e99e8f4379764eaf227. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFLS2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fe7637bebd1f5782e3a34c486f23616fe394947f135ecab74b6ba1d1105196. 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/USUM72303354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fe7637bebd1f5782e3a34c486f23616fe394947f135ecab74b6ba1d1105196. 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/USUM72303354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fe7637bebd1f5782e3a34c486f23616fe394947f135ecab74b6ba1d1105196. 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/USUM72303354.
La Arrolladora Banda El Limón De Rene Camacho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58f61d1752768d1d1a8cb28761c1fbca9d55be5a831d1d2a6a5b42dd0fb78a4. 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/USUM72304527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5139034fb2c22254f967cf63ebeb593a77bcb293f110aacd5432c29fdc36f4e5. 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/QZQMB2104557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fae7baebe876fcf12c2a10412a1c8ddb1db9e3724e26d63abc6c4c2c9a34fb7. 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/USUM72407668.