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 0x0a27a4bf0d6b3143b7b18d0bb7430ba40ff57cd71fb1227e7c4e9bbd00f0540e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8aee3968-be7c-4e2c-9693-8fd3eb24fbda.json and https://artists.proofprofile.net/proofs/artist/8aee3968-be7c-4e2c-9693-8fd3eb24fbda.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 0x892868a763fb9bc73bbed6f872894ee82fee23a2e5e778811120a5c218f572fd. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/USCGH1969677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26442a442c0b9324648ca6882514059555f08d1d8a014f53e5957e9092045eb1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:34Z), 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/USCGH1969682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c852a0047922177105f05c3713a2c46d9e1d45818b1c9b552c824afa1ba045. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/USCGJ2093215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0667654bb5a4c3cc1fa4671007fff54e6225c64bb08ad67fd512cbf24ef5b3de. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGJ2093217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a16e12e5a11f1b1ef2513a44dc83397f21eecf81039505c11434211c6844f04. 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/USCGJ2093219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c07cf0d16a80daacf57dfcf3204e11fed8f57b1f79cca4087e6b8e2723da0f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ2093222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafae1e1b21f40fd174f42ef707b9f401b2a09e943f586d3767848a731735d24. 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/USL4R2066725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42e65fc36d479a02be339dedb91e220b98c88cfbac912f71abcd717de4997d9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USCGJ2215392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae13f9cdad461167916ea7233d22dde32be0e9a3ace8178f041b6adc788a39ba. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USCGJ2215394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6bb91af3e3fc350e79ab7357f8ad5c9a6bcc0bbd67d5ed33cfb53e619d8ff8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGJ2215399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87874f510ce476411e0adf323affbf76f73d41039f1c3a3579fc8d40639f292c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:00:52Z), 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/USHM22288635.
Popurri de Cumbias / Dejenme Llorar / Se Termina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad53be084fcfdd4638adcf3c286e31636f795e60dcdac56f812e0b0ad2cc7a3. 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/USX9P2380299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074a6bed6c2e6cc1266e53c68963dcd2cab24aca446ae3c6d57863e905638191. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:37:23Z), 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/USX9P2380301.
Popurrí de los Archies: Dos Enamorados / Ganchito al Higado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc454017a55a29b2ae3c270779961c96356934bdd16c42ad98ffaab787495c5db. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM82469238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736f7a546decbce5fbe39846f5e3a16e0c67760dde6c3be272753e4c3f0cb05f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USY242428397.