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 0x443520544be571345cd03bfca52e10acc73f1db4b1769889c54209e4724aa65b. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e962975-a2b3-4d52-9174-217ddc209374.json and https://artists.proofprofile.net/proofs/artist/3e962975-a2b3-4d52-9174-217ddc209374.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 0x0024ff634f20e23ecc107b5d09631a71a3157dfe3da2980c25dac444fbeffc29. 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/ES71G2313715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b143ba3090d5d29a7c5b6e97875ce3b11ac226860b68ddf96b1b842718c7aa. 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/ES71G2313713.
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
José María Vitier: Salmo de Las Américas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349daeaa8571228fbfa8ada5682ebc314b39bfc20b44bd8d62dfbc508b052838. 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/ESAAI0188370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78541207f88d0b4dc84c73d0e8e5cdc9cae82fdd40a4847c7428963a4e71dbe8. 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/ESAAI0188374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773a4dd0c1e77e7d6c73012722385e164dc8e152fa370fc30d7d946ab08ee954. 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/ESAAI0188375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b7f63e84acb45fc9fe5683db2fea03b6f0a292de76285df6982965684f5290. 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/ESAAI0188386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f19a363abc3773b5b4f28ae7a73b400078f1bbb1d2efc3b856d3271bb03b24. 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/ESAAI0188389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759fe0ff1767b33de4bec4da57c562381534b4cff4aa94e9f836955b0dbfad46. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ESAAI0188365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1aeebc447b3f2cec88610aa631554ca8d8402d731aa1cda09a21f819a5c579. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ESAAI0188367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1bf05de0033dd50c27e01af48ac04373e74738179a976d82ce8104cacd41a7. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ESAAI0188376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6260dcc7700f8998923184d78c12556b60c5926aa3c166d714474e5f8effb97. 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/ESAAI0188377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b279bb0f8ad64315db283279317f4d1c2ef506f900f382927f6288b7e7bc718. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ESAAI0188383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99a5d2f1eba608fa7042ad990d1d74872767ab439f069c39585f3b57c84080a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ESAAI0188387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb53c93921442b92cc953c3f4f6ac570017e6755e10b651e2f788d82e4a13374. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ESAAI0188388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fcab13305a955837f254278d7c023f124495f2786ef853ca6d364bb02be40c. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ESAAI0188390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e2dca7dc846f6b326dd8e4595de436168b5b78fddf10b89b0e9da3b07bc8f5. 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/ESAAI0188392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6b2c9a4c46bbed295392a2595f3834aa23738539d060e18b36d468866d1298. 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/ESAAI0188393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83198aa577069b10f829cb401c074ca4e70e4824de37a3ae7f4b6aed96695256. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ESAAI0188398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a08af3bc591ea1f7c1eb189f85a8afd761b6edccee42a2e08bd06a4b29bfa8. 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/ESAAI0188399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a54be7cfcbbef6da54a5b1c33133ef48958e634d1f29cd75fbcf070f899d9a6. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ESAAI0188400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a66cd5c02d514e7d233c8e005938c48fa903a5e6198e6889cd617975b2f121d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ESAAI0188394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0e5713429254e24f7d92ea338ac96e0153548af86ee4f69f61bafd875c35c0. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ESAAI0188395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d82ebbdc3c8af1cbe15daf67e600ba6713096ccfb3e40f59c138e7b1ba3a57. 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/ESAAI0188396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079ad1664863ce7374b27ee0f5b1eb6b786c9e57f8576438da553bf3b89cc76c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ESAAI0188397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1cbb4547bdb324af9b06088b2ad51cb140c9ff64201459598ebeef938f31eb. 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/ESAAI0188401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013c803f05403effd6b050507adca7a16e5d428ef76063ede83d0e40ae0d8a79. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/ESAAI0188405.