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 0xfaf82f64895188ba4335cca700b3b240b13a8cdccd3af158ecb356df2aae92a8. 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/5d9b9f59-d475-45e4-a54f-0cf12debf513.json and https://artists.proofprofile.net/proofs/artist/5d9b9f59-d475-45e4-a54f-0cf12debf513.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 0x9baf4c13a7b3ca264bd9f51c5782d59604f2fa592d705d7b3ad7cb0ca9dca634. 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/ES6880400614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d41d4257f2d10474aacf41e2af13c4e6e1bbf2940583741d898db7b4d2e1cc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES6880400615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25fa2431b2958d168bba0f5cb701f83e5049a5e2c9856e8e6bdb31d050b9612. 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/ES6880400619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28d05736eb3a4f207f35bcbd359bf7cfece76bf97107dc7549ad6dbfa813866. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES6880400620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2a0dff027ccd589a4f9c597497dc2eefa8a8b40a6c67093c13181923a15578. 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/ES6880400622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6b0431fb07eb5edf6316c3b1e1952413347d6c1be615fc52fec94005f6adaa. 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/ES6880400623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bed31581fcb9a1b518745fcbe41a00363890a46af6b701fa954182e9ba8d3c3. 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/ES6880400624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdeb3a55cf453ebeeac313d63ef31c4d57e2153f2e0b618b7aeda94be51e6ac5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:06Z), 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/ES6880400626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4c44f96174b40b12d9e6cff66bd60b3fa5e64f9e7576baeff0963534e4ce03. 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/ES5151200619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2536bbdcbfb26ed4686779d665b57510a2bfc7f36a4df3368b15a33288711a. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ES5151200623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b38cf1e65366ec341713ab9d96d4edabdb4eda2615be008171a8760e20068c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ES5151200622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe190fc6b6fcad8e35a940d27fb7d58001d408e83b5a6ad9a344512290fae9cea. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:01:41Z), 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/ES5151200630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e8cd4306d66e8cb86b432a62ae6d356878131aca2f45e38617586a13a821d1. 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/ES5151200624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e174767cfa2a1b7b4cecad752543cdc46c745dd8dc461bb4fa8eda2b9b46254. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:32:08Z), 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/QMBZ91511800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e884e90249f1c4e0d0ae4aa70173bb00c79198e01968953aebe9b0c0eef1fa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:31:51Z), 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/QMBZ91514979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba9613903d5390cf3c19e36f3ca0fb8e0ff8a681866dbd298f146b8a89ff6b5. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QMBZ91514984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3bb4c7ee8af9558b046b74460acf70442a9a4109c1ff6122f7c96211c59e44. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ES23D1900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c6ce5fb08006c38fabe566de7265624bce421de424fa53bc581949d54ba246. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ES23D1900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ced8bb62dbf6228f7fd5e914bd95569a98e31cae0f4ed063b4eb1ce501c697. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES23D1900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedeaf9d535402f999aa0df993e3896d216c8569addd6bfbf7747881f89ef9fc. 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/ES23D1900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ddcfc63c41ff8ee428ff1af85ebb06d624f94e3858456544140c63ea9308cd. 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/ES23D1900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe547e42ac0ab32c94f6bbd3d78dfbd5e96450ec4c68c275dfd184ac8fa6aae61. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ES23D1900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73e4f34b6c4972e6b3e081eb73d58661a8cd769e7bbbec3fbe1469379dcf218. 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/ES23D1900210.
Pequeña Balada Folk (Tal Vez la Próxima Vez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494946d4996501a084bee0271ad0e364737485c2850f272d8dd1f3d994462a52. 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/ES23D1900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9008fecce4ff2eb93e9170159bdb7fb318467fe0d2ae198944b6813beca37a70. 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/QM4TW1945232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd77eef949b96c4259dc4a9203ea0c3c3e57334e39c9e7803587dc0dca74230. 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/QZX6V2300582.