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 0x291dceb8b0f5c72d8a6432fbfc5f35a470930e20b88999ea0564c01e3f01b7b3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b2057cc-1ccd-40a0-8f56-2f986e5c8921.json and https://artists.proofprofile.net/proofs/artist/3b2057cc-1ccd-40a0-8f56-2f986e5c8921.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Popurrí: La Rielera / La Adelita / Marieta / La Valentina / Jesusita en Chihuahua
Pedro Infante, Cien Años Sus Canciones Instrumentales
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 0xa3791ad0c5f7934dfd5d8d57da6a219d9560e4dc008cc0e2c1feb865737be65e. 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/MXF550900307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c55f0552dfedd1b8ed8ab974d48974673d9384a130d769ee80b7dda8d9756f. Chain 2 (Bitcoin): anchored in block 957034 (2026-07-07T11:52:37Z), 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/MXF550808138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4de8f0baebfa6c6dac76d2225267fe1b5c870e09ee53bc73dd1e16e62cd694. 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/MXF550808377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9348b890efc50895ef85683b01037a271723f70a054531e91174fad10667446. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXF551030873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf1cc104baeaad2193d9570d6283237ac7d81ef3fd739ecdf9092d16bdddadc. 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/MXF550808148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63478e9681fab82c37fe3cb980de9bfee73ab81e88f58c5afcbd8584fb98b5f4. 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/MXF550807574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7f3735d83998634d4c28c0f0e7afcec5a0d40ba7eb9c779c5710fb5cf6389b. 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/MXF550904950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9935afd6b3e0fab5ae5cfb01a421dfd212a9db0aa917a43fd1dc5605dbe0558b. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/MXF550808367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd5be6f06d71e628add21b74a847cccc52510477566ffc43b1d45d0e9f73f7e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXF550808146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2746d8bfda4c636806b9ce734e326d3001dc310a71975582974d7a1af5423a96. 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/MXF550808223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f46d04fa965d320d9c0b8361dca13f3b14e7a6315c4d0e3f872be2622fc840. 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/MXF550808150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1411582ca38df53545603e4931352360f3266830dc4d81293a7f7997b430ac1c. 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/MXF551257408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed13a419d8b52935bca59621d673b6e1722186fe568067f5190db0c502ba7b5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/MXF550903174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23550307761cff53969c249403feb2ba0783820df4d697d9ac85a369e843a6f9. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:43:08Z), 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/MXF550903474.
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 0x2dcd5142fb590fed096cca87a5d3df06b0796c56925dfe7a9f05bef8a570c0ff. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/MXF550813400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434e94879538b26f1dcfc1faece6971be13335c2e74b388f5f3d889d01967799. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/MXF550900303.
Popurrí de Pedro Infante: Cien Años / Que Seas Feliz / Te Quiero Así / Que Te Ha Dado Esa Mujer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddd00eee947468f130483fba4473e0fc0f567d0380c795375afc7ff450c7d98. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/MXF550808395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60b0fd7cb5103aae503e391863db93490d785ac74c13d0caeee6c0bd16ad167. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/MXF550808306.