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 0xb1fcd5661f925561c070f0db90f7595470288c43568b71ab77630db7a1498a54. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0c94afa-9fe6-4e4d-a62d-2d4532502421.json and https://artists.proofprofile.net/proofs/artist/e0c94afa-9fe6-4e4d-a62d-2d4532502421.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 0x3020971c7b5ce3e08c12d5f4e019d20d67ae4c31bd121f8a25337da5bf5f4617. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/DEYX82218612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4033e59ef11be906e1acfe0ee3ed54ca6e59d0536aff090db1902a806adcfff5. 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/DEYX82218813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cd81b7ae4a1af9de1db6d0a7ba601b890f41fecd5cb9966e4e7a021d790712. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEYX82218609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0cf4949c654ea89932637bd340004b0acca58238904bb083e0195a809b541b. 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/DEYX82218594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99391264a5c13c85458fe27ce7ecf21e2b70e9b5907755cf6262c42e6561f0a. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEYX82218616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c6ba2bd9fba28d13d30c0297d83b6a49b0e62733856b37768e827e36869ebc. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEYX82218812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb4a4e49ef743aae221f47d7d006cdc8cfe5d345492fc0ae541d751cea502e9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEYX82218608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99391264a5c13c85458fe27ce7ecf21e2b70e9b5907755cf6262c42e6561f0a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEYX82218616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d9b5a4e5a0eec6597b314141b8fb2bce5eb8a54ad9deed91d8cffa6c98daa4. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DEYX82218600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfaf1dffd1513f48a87eb829e2ffe743ecd6e45b445ee1b058a2cc157d2a6531. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:25:26Z), 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/DEYX82223720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfaf1dffd1513f48a87eb829e2ffe743ecd6e45b445ee1b058a2cc157d2a6531. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEYX82223720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc00cf5fbd583900f4600e2a8191200aa2975fe376a09afc476908f1183d6c8. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEYX82225781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd405a7adffc3ec1a59f11849bdc8b39a4c6975caf6835b0a2e7042bd14c201. 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/DEYX82225965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f96d0a3c06322751f0f9fd5a6ccb8f5892ba248edcce2f0c69dacac54a3f9f. 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/DEYX82227337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f96d0a3c06322751f0f9fd5a6ccb8f5892ba248edcce2f0c69dacac54a3f9f. 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/DEYX82227337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e909fcf6df8ef58e9984404915a9248c4bcc9f589321c2185e4a6dfaae6ab6. 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/DEYX82229919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44f9caa3c615772bfcc7126e7f06cfcb7900d377671e80154429af557b52404. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEYX82229995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5726a5e5ebcb9067aa12c907921f7e96b87b8b97199f8fbfb4db59ff2ee4c617. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/DEYX82229998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5726a5e5ebcb9067aa12c907921f7e96b87b8b97199f8fbfb4db59ff2ee4c617. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEYX82229998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9399d09e114bf8add80a97a8273fd8134e37edcbc62cffa4f5e7d36ddf2e5d7b. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:04:25Z), 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/DEYX82251177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c060ecd5bb78beee350693a1f96882025e07c43d1314f4fe4d44cb0abf0acb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEYX82251318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a19126cb6a47a3311243ae2cca2de8a1f8938240463c478340aee7311ba9ebc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZZ7S2517568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fd2bd5a96d5ed6542fdc0aebaa92738d829fe2cf007b13347739983fab69a6. 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/QT3F92504670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63ec6db871b232ceae9df77834373dc39671667973b67da3c2f8ab86aef489f. 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/QT3FC2507015.