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 0x4a265f00e8754599fe773ca0b757556d0dc75a54b8d00a06636a408a0ba9109c. 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/0bcf3dfe-0826-4915-97d5-22c9610ccec8.json and https://artists.proofprofile.net/proofs/artist/0bcf3dfe-0826-4915-97d5-22c9610ccec8.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 0x67118e02de0309f7d62dde20f9b6a6809ac998f38e5a3840fddf9bb7f8e2acee. 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/USDXS2013350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e507eb57ba7cce6f1022d187b339434f075615fedbc3c41b4857b361421d2a. 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/USDXS2204217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb681c6ba1c0aeb85f0610936d6ed3eac9ba66b162fb4ad5e2b99b69c78508c8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:16Z), 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/USDXS2300690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4eeb381a454d1578486e8fa5e8081664b22d225428a824ac0d6e3cb2afa5869. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:17:59Z), 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/USDXS2301951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887ab10e45afa0782592091ae2f7cd0613d5d046118ec84e6d7e115e5e41ac89. 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/USDXS2400883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eff0c9c75f2c673ab563e8aca5b39a8a13e4cfbae07cda40efb525e5832ba04. 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/USDXS2400885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c78897df89f54853d9e256934d494a9922ffdc31dac5f881b507c22483f81c6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USDXS2400902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a7dce21b4680d8c623f70931435ed60ca68697df71ccdc4f1ebf353417805f. 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/USDXS2401908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bf5c74ff1daf9b873cdbaacb75241a59378c3f74023d62064fff863cbd5fef. 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/USDXS2401928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc103d6762d483fbcfcd7aa440d74e7cf328d04d92ace0cb57897fa3bde393a. 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/USDXS2500217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa434702542628c0cebcebec392ef0e7b941556c2d4e5a7758522e99a662d49. 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/USDXS2500218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f9307cfbf72b099c7bee38fcccaf24b70ea7a968023523cdc15bf6779df167. 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/USDXS2500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8e31808b023556f87541688b4f1b33c9dbe8c8420ab8a4a2b082fe61b0b104. 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/USDXS2402234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe570f9ddb3c6f3b5c2d5480fd9b908a9c0b44bdac9b0a756bedcc3baef71038f. 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/USDXS2401581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a7dce21b4680d8c623f70931435ed60ca68697df71ccdc4f1ebf353417805f. 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/USDXS2401908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bf5c74ff1daf9b873cdbaacb75241a59378c3f74023d62064fff863cbd5fef. 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/USDXS2401928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cefe50af288fbb0549ca01c623977645cd93fcedcccb64ab2fa8b5c6ac8367b. 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/USDXS2500782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179a0251f5e2c00b9568064b6c192699d96c0d68ca8d59f5120553e62e78f121. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:34:47Z), 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/USDXS2500998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f007da5881bcf79337ba8a74a26646da8b9d1535fbd8c4dd8a8d66385939f8. 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/USDXS2501012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c5d08c6567c753ccae0283a0d66d3573c94e3467fc4c3e86fcb4457d685ca1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USDXS2539160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6504da9c138641ea30f21cc86cf4c8d69bf73c647c732818afea16c34ab6773a. 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/USDXS2302829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6504da9c138641ea30f21cc86cf4c8d69bf73c647c732818afea16c34ab6773a. 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/USDXS2302829.