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 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 0x72a00331f7bd883b8a268ea9b611c0f944a662472483d047c49d9285a4300438. Chain 2 (Bitcoin): anchored in block 954028 (2026-06-17T01:08:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a4ff4c8-cc83-4a4b-8c42-cd8bb859c667.json and https://artists.proofprofile.net/proofs/artist/3a4ff4c8-cc83-4a4b-8c42-cd8bb859c667.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mix Navideño: Parranda Navideña / Aguinaldo Maracucho / Viejo Año / Son Mis Deseos / Amigo / Noviazgo en Noche Buena (En Vivo)
Alegría en Navidad: Navidad / El Hijo Ausente / Invítame a Tu Casa / Pa´ los Pueblos / El Cuerpo Me Pide / Felicidades / Abriendo Puertas / Gaita Con Billo / Los Patinadores (En Vivo)
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 0x9ed473dba43346e83bada641181eac97e940bd37c3c0b6e21a3d2703c95733ee. 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/USDY42149114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a661a111de36fc1b846790e6c64efc85edced6944e8d5dd32d360dff6f7f02d. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USDY42149119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93382f719f06a1e25d22efa857cc76f51a10d6b35d2ef3afb7dfce4d00acb4c8. 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/USX9P2006070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd727975d6dd0b54e422b6b96200b04c814e3c5dd96e313a656acb669885a786e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USL4R2420279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa571f7300d2e5e486cfc496cc98eb230af0884119585843ad89e447bcdbdbbeb. 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/USY282012762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3e0f3c4d1b07f5b32af766d62ce82c1b3776be9ef6da6e7d6eca1a559a39a1. 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/USY282012763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0044d2bd903b6441c997f363fbe19ea108dff243399626763b71301f69fb050. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USY282012764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e606888f11e02a140f524fbd4d99cf1449a98a3f3f0b4797f1a2f24bcfd0d09. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USY282012765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a90d85559c2f8b8e9df46ab82b9f657612b19ceefef39571867a356df61a0a1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USY282012766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3568a8b677393c971445fce8fdfe1836cb1f55f7bb258524f0e8cc3fe570bd. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/USY282012767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b8ea39218ab588242f4a3dcca61ea3f95e71a6bf27f117d175fd4f20fd915a. 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/USY282012768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4caad343b54ef3141c5bd91fdd6b7822bdf951652c4cd25ee4899891f16ea4c. 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/USY282012769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8492c0f2b82ac043397560b76e64345b5775fd6d81a4bdc1fb1a1f39b0599dec. 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/USY282012770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ef2b4b5a1f9b4225a39370305f862f5a6d9e2299519a23b40da902d85d5d83. 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/USY282012771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027acec1c721c262ed3cf00c1534653a062842f7f5badb850cbcdecdfbdef4df. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USL4Q2085917.