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 0x0e765b13e58ea0a81b251a91c519c9bd1f86122cc3cfbb873cec608b93f2b098. 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/97fa25da-90cf-4b97-bff5-2373e81f85d3.json and https://artists.proofprofile.net/proofs/artist/97fa25da-90cf-4b97-bff5-2373e81f85d3.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 0x24c37f45ac683f65c3397669ba76052f1f286d2ba2e2c5f312fde75ab518c5d9. 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/CLCZ21400999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db61ab6fd5770d9f3888412371cc8474a57060bdc1ab7189305c667cc1279a2. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/ES71G1736073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622eb94ac574f4f7e3d9ea88ebd85ac0fdfa47e7b6264960263e73f81f62a81a. 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/ES71G1736074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf78855c4c2fa99c1bab85f0c9dcd8116f83c372ae345b36c4d810ec992a308a. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ES71G1736075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd7e40e026263c064c9b5f7d33613447871e95fa5708fd01407145bdce625e4. 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/ES71G1736079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab87aabb2b8794867409579b2efe25244b9e8126c52fca9940ae8a70fb58cdeb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ES71G1736082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1e978d1aa6257bd5f4456c73e4e2f8db1b1213199e06aacb44f46e885b5d28. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2025636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678ed216561109d9e0d777b49b1f610801f37d99d6d0e1e4d99172e933f05b7c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2000281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ce3bc61511a41dd8e73b897107b147634ef4ff3fa438e8f7ad737d2f1df285. 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/ES71G1934322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661aafa1ccdfeae80858c9dc2ce7518cde6d82adac951d8f8ef4c272ee87d7ba. 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/ES71G1941326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164b0536f0d49461f3e899c5e3a4e1eb08f194cb152107690c7a2bf074c48ce8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2010335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0187c3a6eb8ae7b2e9615ca3a2c2bd65c5c7c3edb4e95d65ae43d787fc4e33. 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/ES71G2025641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa0e7d6f876b39c7b9711b88dd15a53a24f7985a1a2a9ce6687e2d72d3d5345. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES71G2023745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7963cdea245f31924f1b1450bdc228180adb1cb9946d1d4519671b011fedfcfc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G1904418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd88e013ece987f79d38d96b7d0791cea1272146a2ebcce98b23365d8ea504b4. 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/ES71G2041030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb3e3b828e7b407557f2567d68f2e1efcce92f420138ea45fb6270d3b08c77f. 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/ES71G2045608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32caef42d2081c4189a635a54082eb4dadd78dc722cd1a0bd92702e58700a831. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G2045610.
Interludio (Colibrí - Alto el Árbol, Ancho el Río)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e1f06ed7cfe87e0334b47d2dd5f37e6285f74239c923f08886ae5cb6d08ee7. 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/ES71G2045611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805c039f99a80e2d315be42a6210879eccec94df7432166bc6294d174ccfafa3. 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/ES71G2045613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146353f95d26d873b26023541323394073810dde829d798bed6a1eda31b2dc73. 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/ES71G2061980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd006f660888a2724797d80c12013c70ae2eeb5bcace03351bfeae413138a8553. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ES71G2150834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb085311d832f0779c81aaff46165b8ae3422b54542809873f7689c0bf692a5d5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ES71G2123224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b60d43be08ebb97395f690aa07100768b37c9d1e9dcd222b752e198274bf533. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:50:15Z), 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/ES71G2150837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707803216342c78f582d668cd97262701bf42b65ac2e0255dbd4f494b227993c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ES71G2150838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b5cbb8bac59aa2bb9950cb7fd3a9933d028baa246e9d795c046b385dcbeaba. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/ES71G2150839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee134f5451351a2fc46b3e6f9df36ab808e1e1bc61af76609e624e10873eeeb8. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ES71G2150488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12037757c387bb9648f83e395704c302b91dfc62d29cdc83be28e86ec2965f84. 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/QZ7362300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f5ff1324426268e27785a4960ea760acd1bbeb96984869fabd7bc0f0806012. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ7362300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2542fdab4c7e26ddafc18e262f2c751b00fb032c0f90fa91ff9b965083c62d0. 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/QZ7362300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce3f5d144fab9f4444278d18935f7de5421225904d8743caff06029357eb8fd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZ7362300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141081fd42277fbdc7476838b618db129567a95e258a967c8e00a968df8acf11. 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/QZ7362300226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f2d6d7d767308b9646c667bd16a83cfb18f8c8852d2d4566fb069eaf1215a6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ7362300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb39106497487724c8c8edcdc6b956d88947e6513077cdf567353f077f675d19. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZ7362300228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6a1d8b18343cf087796e5391fc8e0388f3e21ed2d7a9af023b530495239fbd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2034165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61024aaf6664de4595460319d4ab415a7665198fea9153d5c8bb48ef5e65fa28. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BK4DA2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61024aaf6664de4595460319d4ab415a7665198fea9153d5c8bb48ef5e65fa28. 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/BK4DA2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896dde695c0b2d2b13305f748ecdd5d438d5d45fd77ff961bdc04882e1d3453f. 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/QMFME2079211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6a1d8b18343cf087796e5391fc8e0388f3e21ed2d7a9af023b530495239fbd. 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/ES71G2034165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0046e791e105f63b6384b6c0b95aba586e3f96764abc44a717370c95d6515ff2. 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/FRX872124637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67449e8905b6c13226564edbe34fe9418c9cb0a34f0fb38247d43e482040f31a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CLKT21902098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98deb0cf7418d91c7f03285dc439822f16aba437db1317a0e3494e1f4da123eb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UYP462400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98deb0cf7418d91c7f03285dc439822f16aba437db1317a0e3494e1f4da123eb. 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/UYP462400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b71bd51676d3a3a3af72d13ea7e47425dfc890c0c020572c7398c22464b7f7. 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/ES71G1721918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb95fc24319f86f6393c7812ef2bdefd6a8474d15ed49188c6539164be07639. 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/QZNJZ2355410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54e7ecbf516e48268f9711639d6acab04b64899f1e873d93600f97437e12ec7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6P41766245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925b07f2bc214b80df9d41f0c4500373531819475f02fe4282a1569907d4f5d4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G1920909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afc986bcaf8db7aefa05b245dda2b09e516ed34383be5d5e883e87184b8a3f4. 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/ES71G1823987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95edfeaf525336fa18aae88e296dc627a0ee78b14911b956ebd585ecccfe267. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ES71G2032680.
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 0x4093e9f8db9bec0a84a5760b98809f873078019ea7991a24355489a1147f4ac4. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES71G2332006.