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 0x83c7db7dbcaaf9340c0347b516581f8e1cac864f3bce75ead3bd1d8554b4f561. 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/78466408-66da-4c69-b0bc-bfd70a5470b0.json and https://artists.proofprofile.net/proofs/artist/78466408-66da-4c69-b0bc-bfd70a5470b0.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 0x30e6ca6d91d2373ecda3383f6d0bed7643ac74a827f76e4725fbfd20b54d48c6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USWWW0202146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5470c45f7f5f63429f1f8f8a12d399a32d2761e400d823d61641fa16d7e7e50. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USWWW0202150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc05657a4b9f44cb97acc44c39c8bb399e5343ac4a2e04168ab91130e9f8b97. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USWWW0202153.
Te Lo Pido por Favor / Asi Fue / Hasta Que Te Conoci
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1fc23bbf95c3d9a46650acac61734420fa1e382c38dca32e331e346d3aea5a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA2P1302830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1374de4213c36727c9b3a15f8bf7283079fbefc1489d861173db4bb044b90e92. 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/USQY51001662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddddc5329e6682e98d79099e8c100086a3426d6fb1ec09c922e22535e191208. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA2P1302829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218056cd744036ffe9b920e458ff9c70842bfe7966a626cb14b0f31896bf9934. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USQY51476755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5230442db573bfaa3798d6db84690e4af679ebaa185cfedc200a7542b06b96. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:55:55Z), 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/USQY51476756.
Popurrí Sudamericano Fina Estampa/Mis Noches Sin Ti/La Flor de la Canela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9387e9dd1d5422621d2f5bc0cedc8fbf40534c107c3e73185985800078fa1aa. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USQY51476758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059ec39dd1084051123f59409268d78a5fc06729a0ace05210bb755c1c9067c6. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/USQY51476761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e63e89384ac46239cb9d2ab260765da87af06115abbd6c0a396829bd70301a. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/USQY51476762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ca281f7d80ae0bb8959c54f9502b0c2f7cfc49e6009fe4d2dbaf544efc1959. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USQY51476765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5075a2af6b6b2694f97da0ad917294cb54857850d610df55e50bca7c5209c3f3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:10:32Z), 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/USQY51476759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ca281f7d80ae0bb8959c54f9502b0c2f7cfc49e6009fe4d2dbaf544efc1959. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USQY51476765.
Popurrí Joan Sebastián (Joan Sebastián Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb289405cd3f3adef1968d0f64650ebf1f43a90eb0f4f1937e7778e3befe674. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USSF11857911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4882196ac65e4002d604a624ba6598b484f60386cd8d1797674f7600e1c937b4. 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/QZGLS2126013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a2086dbe4045edff3fa6b10e014e093cd9feeb6ec732b305b8d8a807fc4376. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZGLS2126019.
¡Que Vivan las Mujeres!: Edición Especial
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc82d82cb6b36b732054e4f1f8cfe34754b07256a0a76b56905dd8f037335bf. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZTPX2464332.