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 0xc48a3850978a2c2d1ad78d2aeee5889ff2e7a27612571c4b8b315e009ca530f0. 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/95804ab1-bdbd-41bf-b94d-606e27aae85d.json and https://artists.proofprofile.net/proofs/artist/95804ab1-bdbd-41bf-b94d-606e27aae85d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
No Puedo / Hay Algo En Ti / La Luna y Las Estrellas
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 0x4a42bbdd267e5e0a3488a49141ea39c43274ce004b65247c8c805b0af68a41d8. 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/USA561154384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98552de049fd204ba9d08b17ff488a277ea0a61dbf677a63443b43f22e6c5af5. 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/USA561154382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e371640fcc17d28662aadb29fc69559e2f34ef6e3264826520709b910b240c. 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/USA561154383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aa07604f345a3ce199adc71ce8b84c1e77b23094aee937adba7acaac634400. 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/USA561154387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a69fe630b2fe84a6bcc2f5e4fc5956b52cbbbf5fba95b05e0a868dd0439176f. 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/USA561154388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ceadef8382caca7ab3b263259eef0c09a7220e35b52656b7de7d92cde70eec1. 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/USA561154379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396f5a98559ae5da86719afbb3f53a36b4baf714774658f0b51e90b4ca7fa24e. 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/USA561154380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb9e3f0d17be9c7fcddac9095c53b98ae41f78156d57a2ba4ca98b92ab7ae13. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USA561154391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bef6879c0e5102b05b85d67460a2c864f886f28dfb9e586a166b43089cb087. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:57:28Z), 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/USA561154381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39515f66bb16024bc0907818536e14d12a0154948442f8b21a8e690ea901539c. 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/USA561055665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc716805f3a6c8ad718875cb8b42c3565c4a8989708631f8d2af5acfc627a2755. 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/USA561055666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7a8199feef235c93c4376b09ded6d2e35c3e4a380f504a071e5c4ee3bd628d. 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/USA561055668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83625fa924cb38fdfae92f5011c6f17aba47a7b4296a2e250bedd21d8add5f5d. 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/USA561055669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f44896b6c70f29ceb791912bfb608f272af8c0bb65ef17a52014c50dfd8daf1. 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/USA561055670.