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 0x3142632836a088fd3ecf6ba60fc377a2b8d4bda9bbc78fc94040cc4471c4732f. 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/a12c8c22-a8c3-40a4-bf4e-47d34447ebfd.json and https://artists.proofprofile.net/proofs/artist/a12c8c22-a8c3-40a4-bf4e-47d34447ebfd.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 0x64acb96742a1b9efb2a4418678a1923ef31e588cfdb46834217f35f281da0ab8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PLA680100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171c2a97172f4b45a621daae1a4f1d91b354f9d2a94d71c36ca1ec0b965619c1. 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/PLA680100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f9ae8193853447f72811b8225bd5c99de5c9fbdc02c518764b4855b13f58eb. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/PLA680100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104483d4d4f11e89ab9c6507a6530c658fe3fd90a20a0bd342ac9d82ce58a3b4. 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/PLA680100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1814bd34b85aa955398603ad4f4329452fadcb4671f7f8e6b802af2b4f8dfdb. 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/PLA680100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64acb96742a1b9efb2a4418678a1923ef31e588cfdb46834217f35f281da0ab8. 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/PLA680100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f9ae8193853447f72811b8225bd5c99de5c9fbdc02c518764b4855b13f58eb. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/PLA680100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343823f595c6ff185c4671037e53e1c5b8aa7074539606fe54005c13370db645. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/PLA680100138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23ba88d250ba4a58c1f662995f1234cd62cd4baf549702d6d13b8d299e48260. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/PLA680100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1814bd34b85aa955398603ad4f4329452fadcb4671f7f8e6b802af2b4f8dfdb. 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/PLA680100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cae73adb7236bdb7e9e4ba11ef69e9d49f4a50b35ae6daff94f0f340e014ae. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PLA680400386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6d1d87c17e6384f74a6760520a912c3890ef3466d2c9729fddceef208ba9c7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/PLA680400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edc44e62d427728f74ca56c81ba8015c0c7fd898f03be2bb7c083b26696ef30. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:44:06Z), 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/PLA680400391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47da848c2218a35ad252b4d377f5c75cafc6f46b0efd71b346be3fe28b2fbda. 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/PLA680400392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751a61473b070fd034ba7072ed8c082255e5ea4af1bbee81df46c513b7644021. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/PLA680400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cae73adb7236bdb7e9e4ba11ef69e9d49f4a50b35ae6daff94f0f340e014ae. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/PLA680400386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6d1d87c17e6384f74a6760520a912c3890ef3466d2c9729fddceef208ba9c7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/PLA680400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edc44e62d427728f74ca56c81ba8015c0c7fd898f03be2bb7c083b26696ef30. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PLA680400391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47da848c2218a35ad252b4d377f5c75cafc6f46b0efd71b346be3fe28b2fbda. 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/PLA680400392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995991e321190a283dbf8c9aa87792834275556d5d61fbca96e43446af47e946. 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/PLA680400393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74d2cdc14e3fb2a61f66971c48b724b8dbfdd6788f71ac837a3f2c1149f3fad. 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/PLA680400396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca0d4a17e184e8f3d0aa12f1cb55e65221210ddd47a8478ee6398cbdbbf189d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/PLA680700626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe59b6d79ed6f9a40da61f8303c3e6c255d9d429a26009e8a5b7b5c107176224. 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/PLA680700628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29019dc0cdada25bd803fe053c61e0d51a83624a592eb1124c4df37efe882e3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:17Z), 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/PLA680700631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8da136e2cd56a1d5a0f665f205e68db6097ebaf5a9f53299f4ea2f8957f3631. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLA680700634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce987d934fec8fc8fe71d55213a0b9763d74475c8f86862e8c271da337398f33. 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/PLA680700635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe810030de1c2d975e4f807d3e29b6383a8de36410228e7e0b664f035bce3a8d5. 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/PLA680700636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25d9a7b84ce771079bcc53c1e34e3dda8829517ececc3efa0f9bc40919de15f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/PLB382400742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40595c24ce5a60111c4fc8206c2b85674d76b019870a6e678e9c77aa727bca0d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:19:11Z), 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/PLA680700627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe59b6d79ed6f9a40da61f8303c3e6c255d9d429a26009e8a5b7b5c107176224. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PLA680700628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fd7b35dc26ce30e0bdeaa8f397f750f56e65ad8b8e82e1199d34287914c0a6. 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/PLA680700629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e9753bb4b9b32540dfd56653d6e2d0b54ccfcc7caac543820fe9eed9c327f5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PLA680700630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29019dc0cdada25bd803fe053c61e0d51a83624a592eb1124c4df37efe882e3. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/PLA680700631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8cba7a86f2cfeb83fd910d31f5d2f92626cb71d17e988b6aa2f99fd2cabd9f. 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/PLA680700632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8da136e2cd56a1d5a0f665f205e68db6097ebaf5a9f53299f4ea2f8957f3631. 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/PLA680700634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce987d934fec8fc8fe71d55213a0b9763d74475c8f86862e8c271da337398f33. 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/PLA680700635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe810030de1c2d975e4f807d3e29b6383a8de36410228e7e0b664f035bce3a8d5. 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/PLA680700636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bac6c28635bd1ca612982aa8045c645b394e0445e32ccc8aad9179348b9aef6. 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/PLA680700637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2467bb38665ec465409f03f605e264c36947c09ccc871353b6ff27e951d79cc. 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/PLA680700638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e50f791cd99eaff6a9eb6844dbda531c1bfb9864efdac001c53080b145f8706. 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/PLA680800741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bcc0324a34f1e69764e2a291469e3befd1f0818b91779efc4e84a761ba4bbd. 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/PLF371100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b645c061d7cbcaf90e3cd4cdc17a14b5c33b470b6fb61b304aaadc028fbb86. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLC591700104.