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 0xadd9a38538655cd2d05df8f10513c740b9d5f51851620bfdb1b99912c747e52f. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fff37fbd-824a-4321-8b26-8e3a0c294d8f.json and https://artists.proofprofile.net/proofs/artist/fff37fbd-824a-4321-8b26-8e3a0c294d8f.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 0x2afec619c28c3668a1d6b3f6276d2680043123c0bf0b27bfec4c7d427d69baef. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ES5119901821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6dd95a4ac12180bcd797158846d478f833094e75448a0a86098b92fc107cad. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:47:24Z), 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/ES71G2043402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7184615f001b0df28e5cf60e722fea39a1023c92fb175fcb4f0c17480046d2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ESA021200443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ef7a6dab155975a649a60530de420d0892a66609db337915a77a60b691ab51. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ESA021200451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa889b2dab0418a1011bd09b163d54554f3500012bd584784b7383eed1858a2ee. 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/ES71G1501886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96468a63cf17dd2b88686d533f0963daf211b7766c05bcbb7462db5d63130292. 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/ES71G1501887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5364cdf0f8b56bd5b51714fb5a0194163d48e81dd97d8eb02462046da929ff. 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/ES71G1501889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254a15ca16b1eef4be8ad13a01cbb8fd93613cf22bb49f7ed42823db481ccb36. 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/ES71G1501890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271a829f3f40b1eccccba6afce0a8a07bad6863ee79987bc60652ead16d3aff7. 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/ES71G1501894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27acfc8159b3b2a5ede69dab6fea901bf9229595dc8fa81aba2aa12a9dfc732d. 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/ES71G1501895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b72200180972c95ef5f2fd952b1cc7f79da063a28abbbda308853c94573a9df. 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/ES71G1501896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503c52d9020c7634e0d298a6eeb30d55e091cb454de52a93921b9509a834d0d4. 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/ES71G1501897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76498ffcd72eefad6e8ca0f38c4b1690b6ed4dd1f42d9613023738e56924c463. 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/ES71G1501898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581e3b3f9da78f7f69bb8bf7871f386150a9defcd44d73f17e0c85ffeda93afa. 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/ES71G1501899.
Trovador de Sueños / La Palma Es un Punto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3238786bdfcf7d94108eb81c3b271abfde1680ce5f9a80dcc804566976da0bd. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ES71G1501888.
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 0xc7ec694b3081d5366e59b6a5d1dd75b2cc094620be581b2718d2c38c37a4a9e3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ES71G1501891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5b656ed9df683a9c47882d528c65f5dfe740374195994ab98049a1d8a06543. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ES71G1501892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f7bdd31907db9a78ff12fa01d3ffee8ea5f84ce01308347eb9a8bf33ca062a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES71G1501893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d81ab65ae5dfa643649483d715cc67955b9a0506225753175d7b27a103cf00c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES71G1501900.
En Busca de Valentina - Versión Extendida
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d26c2107757763c9b43a90aa70e501efc136d38aa6b4e649213a7db8d2a705e. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ES71G1501901.