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 0x3420839ffa2062b2ea9becc3d5b25cda833460b5900b20db53318a25a39381d6. 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/c3b61853-7ed2-4958-80bd-ad25d43e6ce3.json and https://artists.proofprofile.net/proofs/artist/c3b61853-7ed2-4958-80bd-ad25d43e6ce3.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 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 0xaf4f09adb17837e371790cf88fd39a08283455db04e69b707ae0c68fecf35108. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ESA011787171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6b20bbbfee37058becc2c65d0a26922935759b812c4aff0cb3998448b222af. 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/ES7002256302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb138c13ce649f820bee732becb8a39d3f40c6f3671559296c5064a055ebe7ac5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES7002256309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3090624d599a3f68ca5b945627050570f9af865b3db81acd1c737519285fba. 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/ES7002256301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6b20bbbfee37058becc2c65d0a26922935759b812c4aff0cb3998448b222af. 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/ES7002256302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824c01d362659a6362b1baa357883da21d163dd7515c92719f6c8dc9f10c0338. 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/ES7002256303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465fe3fb28110067b2c4e4082041d4bd203355ad31967f0e64f1bed9c0a5f218. 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/ES7002256304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c21b28b2ae5ba568c3b01e0d13162474f3818e6b8b676abda8edaa45841374e. 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/ES7002256305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ccffdacab8adcfa1c8c2d2d920cd8ada0edd7803f7ea0a7c71f435cbc5329e. 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/ES7002256306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387577c1336519c86c950d08bad11a2bc99e4afb01891e07e61e98e929c11ee0. 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/ES7002256307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d529e203a98aa248a9d62bdba8b64b5f39663b8e2c33199f90c276218689cef. 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/ES7002256308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb138c13ce649f820bee732becb8a39d3f40c6f3671559296c5064a055ebe7ac5. 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/ES7002256309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8cfd34e4a41095a2616cfdebe79d31b56c4c04efc1757244e41145711e1102. 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/ES7002256310.
Quiero Hacer Música (Mogwaa te juro mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcca5fa2066a0d7b77901f0427cac6455ab7f408ca992b70ba888576ff487b51. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/ES7002571603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5071c9f339adb612fe8516aa99cbc42d6b3ab1d06ce1c78f391a2ccd75186583. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/ES7002571602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0485611f7eeaac3389fc3fab32d5e5b67e560f7321032d22ab496117c4f47360. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES7002571604.