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 0x5197d2caa3e75f119e723d2e959d2ecf3bcfa05c4db6d5a60a29bffe826e9029. 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/865796df-1a9f-4df5-b0db-620a989d69ad.json and https://artists.proofprofile.net/proofs/artist/865796df-1a9f-4df5-b0db-620a989d69ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Angelo Pierattini y Las Calaveras Errantes
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 0x6d52de126cf5b0731cf45f5359abcd63dfb63129fbd97ed2ba9e53002e57b469. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ESAAI0256941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11603c70d9cdff91a0314fc44fb2fd177bfdcf70fdd99cee80c1ddc91d6a0ba8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES71G1409387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ed55a2dfd96de2fa91bfb5830702a4d01dd9e7860f0e8781bfa66bc22c0929. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ART0G1808138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6a7bd9edc172dc3f9c253381b11a4ce90ce7daa2090f86dd7c0418941027ab. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/ES71G2124625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5626842772ef58ea24d99e8256add1dd8a6a494fc345578eebf4a07706a89960. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ES71G2037949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c76b61cc353d36f20afb2e68919e7c0b0b943b9e2c9ca203f7231d1efa7c0be. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ART0G1806419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5baa6ee9589af4397db5db96fab8160922419cbaed415fba2ea1d15f2c35d43. 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/CLLH23603074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5baa6ee9589af4397db5db96fab8160922419cbaed415fba2ea1d15f2c35d43. 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/CLLH23603074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f21e27d1c8a66537c8d2977f7629bddc99d3c2fe02327242598c64052c43f6. 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/CLLH23603077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7570ab3125f847da61816915734043c48193cc783ebbc2a000a1eee207ab3b3b. 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/CLLH23603078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86980fe0ad96155671b1f811fcac153efdcd85187673b13348cb6c811e917583. 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/CLLH23603079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7bfae6d42519b103ad064ca5078c724a79cafe0d81bf945b6648d927f96182. 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/CLLH24603214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d567b8758e541b0cf540615b9d1bceaf1a5fa0b06e404e9435876aa79567932. 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/CLLH24603215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34d749940c54929cf62f9c5c76d6fa47ccea1fa65b6b9f904c4d7f04ccf9fd0. 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/CLLH24603216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3c08a347285e40c27d3010eeeab49e9faabb1264d5e0dab5609fa27ef4f428. 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/CLLH25603322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a63473b14b13c0a770c3fbde82ae820392d95de01d503bdbe00faf101404467. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ARIXB2500283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9305779e95ed7a61d4f111fb99ecb644acd40dbc0c36d40c9d2a951d858264a8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:59:16Z), 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/CLLH25603401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47d78f2989257374f7f6ee9bd5951c63c776ab02cf407e0bedb215048e169d3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES71G2021195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea792201886b1f9e8335dbb4881101b1c32325891cc94cc6690bc0ba2ef6478. 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/CLLH23603150.