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 0xe3f1ab98fd036b7edca87cce751fc7d116d4b334ff3113056922122288a53481. 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/eae0a182-4e4f-4e69-bb03-99cff6561065.json and https://artists.proofprofile.net/proofs/artist/eae0a182-4e4f-4e69-bb03-99cff6561065.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 0x2acc356a9eb0801252e3cd0cbe0f762f81e179a7c81333dbf031616a3ba6636f. 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/CZAA62103002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238dd538d0c44f28a9655bc91bb2915d25d594266d6a19604f020bcc653224e5. 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/CZAA62104001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54796a8b456c27e6f31c5832ad484564793baa48a88513aec8adf9a2683a4473. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:09:16Z), 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/CZAA62104004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee90c1c19c605467a7c99ad6155cfb6f6d4094286fa00f233e508a95bb66e328. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CZAA62104006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9abe9fe000ee734f556c499848329f12a86fb8ba573d7513c29a7097dbd646f. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/CZAA62104009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05133e5c905ada8c892ce2636b90a9d42d1d189a8d5c3c2aae2d82a6e2310ad8. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CZAA62104010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1a79a4e1029ce3b21e7cef9bf5a4e883296e189ca71f99632cc6aa691f9a53. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/CZAA62101001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad022f69cbfed72f9d423baa752fd4cd6213b12a9a5b4120a1b109765426e94. 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/CZAA62101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b6fa15739760878a5c7cfd4703d35033648e5eb1c852d87b874f8a5fb4ddf1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/CZAA62101006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e26eb393fdcef96eb0f06b12b17a6e0f57769d000c5305e0c3fe48b10cd1642. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZAA62101007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3499d8647bc2d85db4a3a03153494dd5227aed384b2c2a71e72c629dd38ec7b1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:54Z), 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/CZAA62101008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ec9e4a86b14a4845358a8a7da75fa45df76b3114c448d84f30c0fe6a5dfc6b. 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/CZF141201003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1777c0653fb9323a0f743081af40a772c0b0cbfe79ce34fff31fac9e8730d474. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/CZF141201005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5252a8b356c306c5f8d7fb046fdd41c05ba048f2cd80a57292af22a1503d0a83. 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/CZF141201008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d54df8f8018cbbe6f6352e61d5a20015091b4d2bb884d5df80fd9e3272667d. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/CZF141201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9442f0a9753bf8c772d840ee9646da47bda2d536883afebb80366dcffcd4eb4a. 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/CZF141201011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d143c74a78f4436ceda52d0bed92bbab43a3f3717b6101dec674b14ae1e7cbe. 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/CZF141201012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec91b56bb44b507113cda7dbf624f9d453e0a7dd91554880b1bf3f6bd0cbdb3. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/CZF141404001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa563a7e7276d9042b9fb4b8c3c19ab87ee3fce8e7ae06ae429e91335007ca978. 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/CZF141404002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c69dc6c32a23dcb6264ffd55ee5ccbe28f3c66b2bb7d7dba61997ea05b1b94. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/CZF141404004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41034bc2b847cf6c9bd42dec39d25f5da21ec74fb44b9daaf007508a80e7b8e. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:09:02Z), 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/CZF141404005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9651d1bba4c8e974c8ac6c10094fcb770b6279768084b20665c0609156141155. 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/CZF141404006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f30b23acfe208a4d21f1d85b4ff040e66250a0503c90684885f7a390dbae848. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/CZF141505004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b41299f1e18ed110f2181272c5fb49f52bc61e861e09157d2fd65f82523973. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZF141505005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abb8f995ef3a90200eb4ca63d5d6ddedc8bcaddc7d5259b0bf37ec143fab718. 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/CZF141505006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde27772656d5ca09a078f94d00e557ceefec6f81818adafda47e4508b33c9291. 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/CZF141505008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f4bb4c4a2674b5b0d43d27f1c8fff28950196be11a0101d435a37811ab5d51. 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/CZF141505009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afe031a70af76c775bd5e03efad60418d219100fef4c11c43c7e47fe186e331. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/CZF141505010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1376f74429d31aabe5e9dd7d3b615e8263894b33f0cb99d05c2ce543c044eb2f. 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/CZF141601003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703e334930c54362179957f1d608b623195302f667edc79d60f3424e8b20fa7c. 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/CZF141601011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3252693ac2406f04f6b3fe5722dcf0c90713379860807c0178826eb794b3c3. 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/CZAA61901001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08d05be48ffc66af301c407492d59fb92517ce00a24c5b9f59441990e6c5d27. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:09:27Z), 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/CZAA62001002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ef4c1d4c18da5b2e7456f011083eb5dabf934006b45f51912c9f369fadb245. 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/CZAA62001006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b5acfdab8249b4f6f02f332f3c2e57091d4bef329dcaf275b1673a3a5b08a7. 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/CZAA62001009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ee6c3db32130de1e8aa45e129a9b7ac8773cdfeab5cc01028178d920cf6781. 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/CZAA62201001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bcc915b13daf4e9e893c7001650939a4eb7cb921f46e47bbe2f7b68e0b6fc3. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:21:32Z), 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/CZAA62201005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2491ca0e413870f62da2c7f06bd587d7c422b48ba6c69d5297307dcffc3b753. 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/CZAA62201006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb55942e1cdfaf1a88d5be4e1a065a94da79a193465d0e57015adb4039ffcf4d. 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/CZAA62301001.