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 0xcf6155fad862d6d415344aac482b8d8e49a42a011b11a53d674b2c9d28cb10e7. 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/fbdf3318-aa1d-407d-8a0d-628f0877410b.json and https://artists.proofprofile.net/proofs/artist/fbdf3318-aa1d-407d-8a0d-628f0877410b.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 0xf1f99ad694f8ce7333aeb3f649542fad1a98bb0a6b53c7af0eab52fd7232a049. 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/FRX202297281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc5c871c43988de94f352e9414ed299d8e98d2f479139822aaf02eda6b50e62. 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/COC012237025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41c114777a587b23cd1fcdb2f3188a6239780f31a4530d762f4b2cd504ac1a5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/COC012237027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60cf6b32ad0e1fa3bb09ccaa68ce38b6d8284a6c50ed0626aab1a141e291928. 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/COC012237028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebe839c71397be3d69dfa1ec9fafd4914c0a1ca0b6fdacc0ba3546b3ce1d755. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/COC012237030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bde8f7b7e237e84f17666b742ed410190a86485dc7ad150dff9c77c7ab5a44. 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/COC012237034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef7c1823b664c6fb21dac9dfabca93d4f3a9e32c512ebbcfa518f730d62acc0. 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/COC012237035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dbcacf6bba7614e89d135fe7d4cf88cb699486880d9c3a6a6349bd4f88e603. 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/COC012237036.
Medley Chiche y Wilfran: El Forastero / Si Tu Amor No Vuelve / A una Sirena / Sueños de Olvido - En Vivo
Mi Mejor Versión el Concierto Desde el Parque de la Leyenda Vallenata (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9b2d61adab571bf0f18e0dbc7decf6c8ed77fae9f059fb17a75623c6e143cb. 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/QZW9M2333660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a6c5386d442f0c18111e4580f08f447774e8d5569f1fda2749a6856aa3068a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZW9M2333665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb550dc30814748a4bbd044e3c56f9cc48028e20b00aa6ea5c5785f8d8b1de5f8. 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/QZW9M2333667.
Medley Homenaje a los Compositores: Camino Largo / Te Dedico Mis Triunfo / Ausencia Sentimental / No Comprendí Tu Amor / Tu Olvido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde019cc347b7088344e4a0a96e6fe4684267d983b561f3739013be623248415c. 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/QZW9M2333671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a580959dd1ee41c5c088493daec4c79a9e0d9d59ba986b327d9ec1a39ae7439. 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/QZW9M2333672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bc6380cb7be444aee11a3f532fe8e68152282b7e1c860d9d521f138bb7ad69. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/COC012237031.
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 0xa4af5fd8c44336f17c9fe496e4197d6de2484710bd3da97d2d2ba7ac7a51c3ca. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZW9M2333666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0275d16f98409522ac6e0c3737a042a8913e8b6edf224d737f7892c3b989c9. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZW9M2333669.
Medley Yeyo y Rafa: El Más Fuerte / Señora / Hasta el Final de la Vida / Cuando Decidas - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643700bdc719b1309462c7258da477c5454f26166614bc3f22f95e98ba4457e4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZW9M2333670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d63c05bdc7c8a7169db39b283fb08fbb647586e70c9a712b4c99602a22d77e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZW9M2333676.