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 0xa03ef66b4917160ed5ed03537f191a1287ccebf13913cc9d91982753075eeb5a. 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/7749a4d0-1b36-4a9f-a512-802ed411789a.json and https://artists.proofprofile.net/proofs/artist/7749a4d0-1b36-4a9f-a512-802ed411789a.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 0xa674eca515ac5bb99bfe421972f7d721d64f784d8677a0758f0cfb7b171e0283. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:01:52Z), 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/USCGH1749470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a241df8297ac2c745e1c66ee10f83e8358731b654348e175d3266565363271a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USCGH1749473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f450f080a5df5b4a4e44f3b18fab84234d2b181250f892a4c823b8a74bffcf. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:15:16Z), 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/USCGH1749475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23496a00153bab09bbda47ba3ae734f09b8a1c9dd9e6e3e5fc6253a1eb7045e6. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:38:49Z), 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/USCGH1749479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5412dab1e0dad01c7e088e337f8e5b726b63612ecf463271c98dcdc8855afa3a. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/USCGH1761309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68b4cbc911c5d2a39cb83e00c10aa600772d0e08c86d01af63267262107ca7e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USCGH1761313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf147500e6af87c9478bc5a93598f56f1537e8cdbda6daa27374931adcc115312. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGH1761314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c42436073a0b6fa75b9390fb880c8e759558b9736764c90c8c59024e7b0693f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:51:30Z), 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/USCGH1761316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d410b20d90267060838bc8f241f9a3540cea83d9fef5913e97da638b3a1b5fd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGH1761318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a096779ec932f74f20e59bbffe93180784b1ef986224112e7741343cec50710. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:26:17Z), 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/USHM82301171.
Para Cantar la Tonada (O No Canto Nada) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82017a7c44576f87e80f312e7ad11cd2dda5af287b69bbcdadde5a02ff455c52. 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/USCGH2408377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab718942de2180bdfe295b689f7f7573099d7aed6af454111d873eed1fbe47. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM92441714.