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 0xa97e7c59c6c5699035873cbdcb6f22f9bfab0bfd0aa0023a15affebfb4a89cf5. 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/8a265415-946b-45c5-aabb-257d4b723567.json and https://artists.proofprofile.net/proofs/artist/8a265415-946b-45c5-aabb-257d4b723567.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 0x4fafe72ecff83440fec0f19f0d9661b78fa86c016817afaf06176accc9d931fc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITB261300920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0958553920da1a76e4dd78004c509391a236dda46553e90eaaad2490e0b5c17. 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/ITB261300460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6386c4cb48616e19df8c632106cc2d774dc932ecf2b52147cb786353cba461c4. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ITB261300930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c11eeed61369cb7f762c1ec6fd63fe474fc193fa41433a4b9e1169cf684dd1b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITB261300940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb2a7cec8710d7807a5c29c77d6bf5ec86089b6a39701fd8970799b910589b7. 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/ITB261300480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcf17849575997c2f19c35adf2bd21d9f5ebd9275f6f070a57e9252ffcf750f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITB261300490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53bc5047c6b9264092b8ef8a20218b0bcd9a8c73f4581705de4a87df38f1fd1. 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/ITB261300500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79442032d233014e088984c69e40d7abd948f92c05b227d178064f195c6c2631. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ITB261300980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74cfd72410a7e113924700bd6b5ed448b33a03d6964b4ff3a3f9dc5e4df4019. 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/ITB261300990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184f07679c8e9688e543728766f8c559266bd036537d7e52b7ade02afff41ed8. 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/ITB261300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7327e8aa9ab0f7fbac6a7626dd76bf2be247fddf718c3311beabff3d6896009f. 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/ITB261301000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe403b6c68ba90373031a1a27cfa53e4d9d83a331ff75e8e2e42b9d74eef018e1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ITB261300550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a5fd5feea99fa452baff3770e385fbb400b27ef3fd2fa16b292523aa52c3af. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITB261300560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb26321715ec869a172ebaf68f516b428d1dc3153b5db439f94094037c7f8248. 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/ITB261301020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce219a190e72f03ffdf32118ee419f71faeb1f962ef342f425ea292a60305e4. 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/ITB261300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7d9efffa7a218e039dd46fc6a9ff417a30b34137b4f0bf4609712cd2ec26a8. 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/ITB261301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf256879c069bad31042e7701b3065844db9496f4f784cfb7ee4d6ac8feed92. 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/ITB261300580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede4cdd56a2c7fb2d13b84cba6abb618c40161b733e4bc6d438ba4d281e1fb4a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITB261300590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25eb8c43f0036cb16fb8c1b6300d2e1010a202cb9c1e97a2a263c46b139fb06c. 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/ITB261301060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55968a380eb3662016aeb361024dcd775a319a4ebfe5c191b8da96c87ba2fe1b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITB261300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f16f5e80df1d14ec1dd6de1f3fca53b11f43c7246e4b1bd786d5a2188c149fe. 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/ITB261301080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f6a60d150ddbd959353c316b359efa06b35b91be47913d951178373d8a4180. 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/ITB261301090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7990bdaae361d2e4ecbccd3991c827d5c4ea142544e79c1fdcc96ea99f6541e4. 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/ITB261500400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac5445ba389d0ec91cbd14d9914e083049ffeace63e83d230423ec6bb6cdd8e. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ITB261500410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28f10d9ecc2104bc2682b86bf5ea23c3c16fdc25e7eaad364fe473ba239c1f5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ITB261500420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8478652c47a4e77c8a3f489d13f3347511cfa3c0e71288eca04855a065f8d6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITB261500450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20431e40986ff19c3bc7bf54e8dc706c8675b106a7ace961bf86c6b272cfde7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITB261500480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fa7e1bd0f1e98c91a221db231357a09f1dec68e7e3f67c023ad5137dc2dd9f. 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/ITB551513936.
Nella baraonda (feat. Fratelli Quintale & Nerone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b60c4d5f26637dbc3ae33354691cd35ebe8dceda089fdf6e21bcc1976ff640b. 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/IT0CF1500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c08724df492fc077db0f3969efe14b4b1ccb0754fa50f12daea0dd65d951df7. 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/ITB551412752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3f52babc9266d19d8d65730b64b1f90674269c99cf30ecf090f25c2470e28c. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FR2X41653178.
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 0x2afb833ddc28391f15060f2d249baa36e3e0b87947e3ab5f2fde069d8c128af2. 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/ITB551513937.