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 0xd8b1d0d10fcc8d498ddbc6416e0ab482f8eb86232cf58a39ef468b0cc2078df7. 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/9b4a8760-8dfc-4995-9651-31ee6e56317a.json and https://artists.proofprofile.net/proofs/artist/9b4a8760-8dfc-4995-9651-31ee6e56317a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Los 30 Grandes Éxitos De La Música Cubana
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 0xd6a8a616875de59834862f9e7d170a092fb9584764fa0f59a87648d4fb60a7b5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USR010614256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1b32d0124161f294bbdccc0c59e561f216ae3ff93d87365a388b94b7f13ba4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USR010614273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83f0c7bf2103b9bf85e66dad20eabe9ae53714b1691580511ed64232e5573ed. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USR010614259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb55749cdcec1c98f5b99d2d17dcddd1563a00bbd509a350409b2ba75e4a7b1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USR010614275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652b2cad3e4f7f9afaae61fb14735fd787400b0cad510408176325954cbe59a9. 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/USR010614279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cc889d3d62860495c23164c07fcd36c19328c6b3a6a485c2be4c8f37b77b3f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:56:41Z), 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/USR010614265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207c8fb25297122bae8e2e62c6dcf69e31e001fb661b02dd6e6323c121b7b241. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:52:26Z), 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/USR010614266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad6fddb54f9ef89fdf03c6adc5e486e3d0f5f833a3ed538ff2086ea33f57631. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:02:05Z), 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/USR010614267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd1f18fd7a8be71ec0812613bfafd0a2eb88a9ea52f8df8b5515172aea97bcf. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USR010614268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d33ff697b43ea7dd1afe2545cf65f71dc3a0e25351b5d8f0f0d043c1a912b5. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:27:58Z), 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/USR010614283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf114289a58db28c711051c7cb4acef804e03adc415dbc4227c0f8728fae45c8e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:40:39Z), 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/USR010614270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd298a85534295b90a2d8d2b65319efeb0839dbd3821a6fb00671a3b8e4d022de. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USR010610624.
Del Sentimiento Al Son: Lo Mejor Del Bolero Y El Son Cubano Vol.1
Grandes Exitos De La Musica Cubana Vol. 2
Grandes Exitos De La Musica Cubana Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1d09213f11ad4c63fba29300336e18b609e592632d7418b21717d535509ebf. 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/USR011010513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9717c27be0b3564fd18f3221fd39026c1a54937b18b542426a788d3f35c46e3. 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/USR011010528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d4ffae47dc758c2eb7a6ee0d529217a4ad7abb002505065ea740a0403a54ea. 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/USR011010533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14d964a749816052ebfbdc04c081de57a4d33529b8803372951c393dec82085. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USR010614281.
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