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 0x650d7ead39f29f85cb9c6d79dc08187c97039b1fe49d5428d3c9cd04d5347dbb. 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/4b3186c9-ebeb-47f1-bd95-73c81c18ae4c.json and https://artists.proofprofile.net/proofs/artist/4b3186c9-ebeb-47f1-bd95-73c81c18ae4c.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 0xb8b51d8b7e8d122bd433758a52722a6c05ba4f96456ab3364c8e8810f53ee473. 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/ARF036800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca5336b3186d7eb74abb6caffa14ffc50ed32d91f622db1130ecb11619062cb. 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/ARF036800174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f082025bd41a3b1f947d123e4bd20addb875dc5a9a4be6f9c7fcb4937c45ab. 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/ARF109900543.
Ella...Ella Ya Me Olvidó, Yo la Recuerdo Ahora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d32958347992dc608020ff696a64887af381255ca1a420cb772f674d00f252. 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/ARF109700615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a23bc5187f1a13c8c9153f3019e3ce8724f043c07f5b3f610e5c2eb735461c. 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/ARF036800149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4511ff261b0682996132a11214fa45472203e9a111542f340be94b4b9b8991. 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/ARF109902263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d772b262e1322177cc5f88920eb648944dbac6b7e20547a13181667224ffab. 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/ARF036900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c22d52367e2f3edef5833248122dcab7d17d9e4e56d65d702c0d92f0fbd673b. 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/ARF036900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6a85f22d78620836299c1592ead07ed25593e27990eff79c1030647dd732b4. 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/ARF036900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e62fa9fecf59b96096f071b2170ddf211a8cf58d55365f8b627e27335ab7d8. 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/ARF109900537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f88e82398bd883f0ca0166818cb8cccb107d91986fde5efc4900d79dacbf7b. 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/ARF037100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbe09c7ca2d8809e0b3eb46c65173dafbb1a1b4b4e0716f7bfe22a961a55940. 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/ARF037100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e115be25c5f127961ab5aa4bb9fbfbdf261448013c39187da506b74919a307. 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/ARF037100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc1698f98d5d4154112b91679fd590d1e8e3b1f57064c01afdd835ccef6ff6b. 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/ARF037100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe075d684958ff746dcda7d610b25a76d9910759095ac933f1b432e7465126310. 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/ARF037000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8419967f6da4fcf3f739ea12b0ec6f03515295237d79ed8fae099103ee02f9b9. 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/ARF109800786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d4e6befec84eb0b8e7ace9017b4d8bc849ab9e4f38fd4a8ebb056a4fb90238. 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/ARF037000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cb0d5c18bf8fe8cf63d8c3b5116eac4a2daf9b92052e6c6880ec93bd0176e8. 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/ARF037000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeace90eeea3778c879e5e32943219b29c3b75ae4ddc36a276f14fb99d35e2909. 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/ARF037000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6717d9bdbdf75d7d8858d3b4b0bcb80a6f940c9a0000305ecc2918e5e8d0c504. 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/ARF037000165.
Agujetas de Color de Rosa (Pink Shoe Laces)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ead4c504ed16284c55dda8101289cea15fd0955e0d5ce40cab72416c755aba. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:02:36Z), 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/MXF146100246.
Los Náufragos Cronología - Te Quiero Ver Bailar (1970)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8419967f6da4fcf3f739ea12b0ec6f03515295237d79ed8fae099103ee02f9b9. 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/ARF109800786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560724434827f9b8d6c179f2fb37635ed5a6aa9934e87902f426aabff027cdc0. 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/ARF109900527.
Los Náufragos Cronología - Otra Vez en la Vía (1969)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aad9eb85f0ad1c03e82264facbf49bd2c8ef6cb6cad3a091ab9c70f3aa1c248. 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/ARF109900523.
Los Náufragos Cronología - Los Náufragos (1969)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ec19232f9606b0bf45c737eb1d48440a02e7348fc150b8af828026ef8f216c. 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/ARF100400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40488ca312fcadc2635e7554b5b99b5c34c27a4b47023ba4068f4563d7b62cb4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:43:07Z), 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/ARF106900160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f082025bd41a3b1f947d123e4bd20addb875dc5a9a4be6f9c7fcb4937c45ab. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF109900543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5abb4e511b06d49d1544302bc55cb675e8d664973642494b4dce18196c2472. 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/ART0G2001535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4007b71d650569379541514a4c555714193e4b6b2cd7ee98a53ee21b2962cd3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:41:59Z), 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/ARXP71614206.
Los Náufragos Cronología - Los Más Grandes Éxitos (1969-1976)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8419967f6da4fcf3f739ea12b0ec6f03515295237d79ed8fae099103ee02f9b9. 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/ARF109800786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b68f84ce198d71f1c786388a647f5cb56d4f002dbc7823f8274d4731e039a27. 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/ARF109900535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f082025bd41a3b1f947d123e4bd20addb875dc5a9a4be6f9c7fcb4937c45ab. 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/ARF109900543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e62fa9fecf59b96096f071b2170ddf211a8cf58d55365f8b627e27335ab7d8. 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/ARF109900537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aad9eb85f0ad1c03e82264facbf49bd2c8ef6cb6cad3a091ab9c70f3aa1c248. 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/ARF109900523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b96af075506b98dbcf75292d8d20d8896eb8406b4171e1ae782eb5738945191. 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/ARF109800787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd024720ce4207b47f02d7f97f18f9cd0123b4a6746d6f198700a1ad66412de09. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:10:33Z), 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/ARF101000302.