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 0x500a3ca3baa5c5c00ae51d6be63c23f270a7725eecf457088efb751353a79cbd. 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/985c437b-ed52-49b0-841d-3455777f831a.json and https://artists.proofprofile.net/proofs/artist/985c437b-ed52-49b0-841d-3455777f831a.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 0x66b906a6e5b66caa8046de3a817e2cb46a367a20082c1291b0bd90465e738381. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:20:21Z), 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/ES21C1100739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13fd429928a25f2d28705325aa4076d2dc76c34c4b35211dcbe09a33a482067. 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/ES60G0800598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f4cae36ac3a2e8a261a482417440aa9821ca3d46a671ff3fb276fa824dc3a6. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ES21C1000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871a8a83748883b653ac4ebfc8d19d5062c92f37f3baf65d3971b480d5ba2ce9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:36:03Z), 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/ES21C1000032.
Paseando Por La Sierra (Canción Española)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24ad7f811ecb13a1ff6e708a25ce8efb0846ef72a4d22ea7dea143bf3074bf8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES21C1000187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0648474dbbfb13c3afe7033a04c5e7340b9d8db299ac8f03eb8c6a08774aca8f. 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/ES21C1000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbfaf57c32abfbf13c1ac44f917fe5f57b3cce94cbacf8f94595b0924e7c62d. 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/ES21C1000194.
Por Las Calles Del Cielo (Canción Española)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab595bf7576e0252cca2f43c46ac3ebfd73e3845e1696977a7181b333dcca4a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:09Z), 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/ES21C1000246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde04e5acf3fc8efba8bbad8da050936543db042f579a6320959d161a3a43f86f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES21C1000248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4ac2c4b44a91410797b17c09962d8d3dc71cb9595923d77b39770091baf1d9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES21C1000249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f04528e949636d4de4983db77b140f835c2e2031da2c35008e9d176330b056. 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/ES60G1100664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf68dbf68ff2b284eda69032f9bdd2517dba365c01bbf3949773876cd1600f8. 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/ES60G1100667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13394ef2a38895d97712e2ec2f1e2b83d81a8da4b67f78164caefd5eb03b784c. 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/ES60G1100673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced1753c8f1cd02234d91b1213de1c15da2209526b1bf4acce50932ca30c6878. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES60G1300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d0f59a75df7a456014711336faa6e3bf34bf38b842d1e976af6da614140096. 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/ES60G1300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94318b83dc37a9c2fa3309efb530ee590311531707d337b243121d158e1613eb. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SEXNP1000413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf748a22ac5b45925b53d4d4dca77ee728c13bea68c4b2449e14e0e34afe48895. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:55Z), 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/ES60G2100830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872e394f5bb30927cbb035e49db908b4b13d15f6ab91780a4a79636536ff0e15. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES60G2100837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694cb69c1abf92d0ba898f52cc64fe264ef364d27e29d32f65ca14158be4aaf3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:32:54Z), 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/ES01G2200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fce931ba7b3c63ba72d502c47007b3684849aadf5966c39ae432ffd9575832e. 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/ES01G2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97db28606845d6cd7b0779b639af3717523261d488dc2a12ce376422d87ef4b5. 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/ES01G2200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20fc09c61cf093333d5127b8d60b1964639b4e55f34ea230a1e7dab2bae814f. 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/ES60G2300880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92979a4d9692507ccedbf501944cae7964a5bf0a74b3af88d13fd9a8289fc586. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/ES60G2300881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6b9ec79586ba9214502aaef15afd16c8922c01c8265815c343bd606d3cd07f. 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/ES60G2400902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7218a1b76d872f6ea669c2b0771cdacce95714729e6e674277a7a7d7d0d2f98b. 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/ES60G2400903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdb3c00a46637c6ba49a7199cc88d4da1dc7e1ac61c2d5aaec2c8d7d7d677a5. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES60G2400907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185cdfa411edc70b11b02f5147c7b5c38e7eeda113568172736ad3fe4c2a4104. 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/ES60G1200561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0d09b4fec48ebaf075b804d84f487ba69cb4a8a5d6fd7193629c25b53baed8. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/ES01G2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185cdfa411edc70b11b02f5147c7b5c38e7eeda113568172736ad3fe4c2a4104. 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/ES60G1200561.