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 0xcb895ea3ff9631fd222a8523be61578b434c78e365ed13d12caf003c3c1cbe30. 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/ae67ff84-94ed-4da2-bdca-377275b5e565.json and https://artists.proofprofile.net/proofs/artist/ae67ff84-94ed-4da2-bdca-377275b5e565.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 0xaf83f15b2a44678ae047321ef5ceee3b27bf2f0618821de835de49daa556210a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES53S2102913.
Èlia Bastida Meets Scott Hamilton & Joan Chamorro Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5e917a224de20dc4841d1a2357361a291065fac6b8f1e72ee8ecccf0f5f110. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QMFME2400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd33ef1a84202b697fdd8202a4b7f8829755e5d5de6e9994c3be94d409abfbec. 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/ES90S2101524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1a6539a0f4fc098bd5260000d60f51aa17d50f1605948ca61922780ea97675. 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/ES53S1601801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d6ccf3ad4f90f48469056bc8e79f6e8abb13780fa33d316991834b94a62d26. 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/ES53S1601803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bfdc0a09eba739a1d3d1a02dd8bc4dbf8c82768f15752f9b72e48516d1e288. 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/ES53S1601804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a7839e5e5b61ea5f52c773b1a768f6796e1bd30d17417e80457bb5ff39542f. 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/ES53S1601811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f90e4c25a7d3deb3c897f0316a2404ee3eede44aeead09a13fcdb8e81edbc78. 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/ES53S1601813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed739b6c6d30d0fea7ac081cad3286dacfe98909d400b33fe993adb351980624. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES53S1601810.
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 0x4fd78ae934da68e77d915fbdd93a098666dc5faa60ed6a244f723917a1f8f6ec. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ES53S2303715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e258eaad8784c2657b7848d1e24652c4417c698e24088ad49fc7412b6dd8f3. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/ES53S1601802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2aacd28e9db5bc69a25ebd8dbedf3654ff03a72242757599a5ca2f5ce0173d4. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ES53S1601805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d79bfd4d4982ba0bc4b76869fb4b405a73ab9c1d72fbfdea38054e19019698. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES53S1601806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab3bf424dab9f39848874d9e8a83c3e695e5b5de3ab43ef83eed313f05e21a1. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/ES53S1601807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ced3b1fa0ab8ac0786758b42e5d1f2ddca5364bd30b0c084803ff4f7d30149. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES53S1601808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f0d9af35ad55e85a1466fe0ea05a5758a0fb0d40243c0da0d5f57c3ca453bc. 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/ES53S1601809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49a379340c90d4e5980bdae2f883b64da2240fceb4c95bbe2973a98482f230b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES53S1601812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c26c7e4b7682cf2b4fb2348c5f84e5be4bf2c2e381f036b397edb299ecb5ccd. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ES53S1601814.