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 0xef005396a32e40c78e1bb13e010a904b7479ebecd4f648c5e7009c8e9549c2fd. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4daacab1-2bb6-423c-b989-93aa124fcc7e.json and https://artists.proofprofile.net/proofs/artist/4daacab1-2bb6-423c-b989-93aa124fcc7e.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 0xc2f62b2f7195e892c44d253f8b18d294a2f7c77db05e7a4bb350de7a9e1fbe03. 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/ES5028300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006f1a1211a852c9a18e8b6d4b259249b96e92277520348c72ce56214fd0af32. 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/ES5028300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75b0b5038f931a06a8e9566af38b4798796505328faf844d161af10c6082a69. 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/ES5028300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b147284a4b7c6d1f5f4fbc7df928bfe5932d74cae08e81c3a596f64a79e014f. 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/ES5028300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead90f8245c2bfe0cf880ae16ccf136e84dc4626d427182efadcfceede50ee57. 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/ES5028300163.
Yo le Hacía el Amor de la Forma Más Aburrida
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921a43cb4ac22266d86d5eb575982a724c3c4f887616839419d15b0c2a5e81b3. 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/ES5028300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb075807d8ad2547de4a61b3b606e5260760d7cec9de26671d37bddb8c21cece. 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/ES5028300166.
Ahora Que Mis Sueños Van Cayendo Uno por Uno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad062e80a493299eebb953cf6a00f2f84021d6e17dd7fa4d643d775a6bf36d3. 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/ES5028300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad8b32655811ba47b0f2d2068877639bfaf34b1ddd0a432c07d3c692de6a71d. 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/ES5028300168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e820cc24aa33adb1a82346eb7c72956cacd052b5a8ba57215051333e870023. 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/ES5028300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75b0b5038f931a06a8e9566af38b4798796505328faf844d161af10c6082a69. 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/ES5028300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6d9d1ca2fa6919eea9a37a4bb1984a62a58b60716bdf6eb191dae31b30eabd. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:54:32Z), 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/ES5021901813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e3c2d92989b3a53c6e18cc89a50ec056865de5708c10fad0be0331c7af893f. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:45:21Z), 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/ES5022001027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1fa192eb26f4c690afabed0f306f9050b5668fc6b1f48a2b9fb31aa2f1c2d4. 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/ES5022100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eed4d4ad460c9a0a940d8fae745e19682e732c72a56dbad55f069418ab5a9f7. 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/ES5020500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80b8d4e8eeaf4e499419ae3a1b81f1052a67536014edf2f4c7cbf6123a2a6fa. 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/ES5029900139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2195014149975969d477fe2de43981535e4fe3e576148c9f8985a1e17469de4f. 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/ES5021801187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1fa192eb26f4c690afabed0f306f9050b5668fc6b1f48a2b9fb31aa2f1c2d4. 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/ES5022100121.
Homenaje a Espasmódicos y a la Memoria de Kike Kruel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e047a8bfc98b5c19d007f5ec799b1f0da2d7a131bf3b1c632bdd4dab179dc9. 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/QMFME1548170.