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 0x37b8f86ecb0b192cbf1a83a795d413cbc15bc72334ac49a21bab6b95cc019232. 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/2e1eb437-a20a-44a8-99f5-52c3d0ac2bd9.json and https://artists.proofprofile.net/proofs/artist/2e1eb437-a20a-44a8-99f5-52c3d0ac2bd9.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 0xbed2ab4dc91b636b6b283ad82855a257abeca0f89cca8ce7732f625dd51d4a68. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USCGH2111613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc861b65c9b91bec4ddfe73ed3f07ef3630a294ea5807228108b14b6358541e. 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/USCGH2111614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5529ed1e66fbd811aca96d04717c6dde10b99d59f69f46a8e61eaf9d52c7ea3. 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/USCGH2111615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437264cadda6176621c25fc338a0a639ee55db830d7ea941dbe595a7bbf4ebe1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:42Z), 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/USCGH2111617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29db228897444063288904490474df86f287cc3bad800b3513b198a04da4595. 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/USCGH2111618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f3a283badc45b2c5519dc9280dc50650b5022763c5c3470d1e226de14cdcd8. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/USCGH2111620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628ab902d70047a3af1c6f37190c1ef66e36b8b661e9904f97ab166a284d16ff. 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/USCGH2111621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f553ec8872c09052619314f422e811e07a3101b20eabf15fdc0b7636126a9d. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USCGH2111623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca1be305343da6b028fedc612168a47dee348a43454585d2490b8b78cd9d6c8. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:34Z), 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/USCGH2111624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c1c24c01c6f072352f7d5253e925703165de81d885d3948d42e3fecba7539e. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USCGH2111625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cc3f41826b4c7b6ce307c6bcf2d94deb7006846ba97fb65dfe7ce482bce4cc. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USCGH2111626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169d11477befa9907e8ef680ad4cbf675ee5fb24f6c7f59117c45c0a656cc1cc. 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/USCGH2111627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291f8caaaa939e1563268b4da4ced5a770c02901d9935efade014f35b3f6eeb1. 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/USCGH2111628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dc444b5abcc207f91338ceafff6705f610c208c9c0e8bf8ec90557434ced4e. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USCGH2111629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d63fd5907ccffae3ddcf174e23ce49a7507898d72cf78a16203a2a8cd63f5c. 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/USCGH2111631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14bc5752c7513b2147b7823591a1f6fc389a2fff2c48d52c1f8948adb40e79a. 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/USCGH2111632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ac56c74d4a2d8d757bde54ac02057a70f476cd97e32dc868219c1849522c30. 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/USCGH2111633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6d5c5f8089e45003ad8fe4fd7bfbed2edd108fca1ad6ba2df3187df6507eb1. 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/USCGH2111634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaf59862e52c78018f8fdf0c62cc5acb315baed0f54b1f1825f27a390d01944. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USCGH2111635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6e3bc5567474bf510d6babf2dbf6c9d9ee71a018704c23df1c95c2bfe6fa53. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USCGH2111636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69df1c1cd44f132d25404a49b38d3128da1728dba65fdcdab64672926c040245. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USCGH2111637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54c365526373cf01fe5652286d915acd64ba26dd1852273cc4baccee233fe3d. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USCGH2111639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63f854df4f56b55b9d8099ff17f9e592083a5f76bb4955678b3c731ab5e2dc7. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGH2111640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6536d6c055e210f234365cb718b91d901a32489b1f3c16f4f60ddeda2f43145. 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/USCGH2111641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9b2074cc709a2b3f281f112b0223cd1ddf238f0bfb4055c84f6ba796bad135. 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/USCGH2111642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05db61e2e7d6988cb43595683cb529d1d88b79d6e00e1bcfa415379edc8639d5. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:43Z), 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/USCGH2111643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e762829e2a76bb31820b9901a15d341941f8d359715f794ccbe5f548cb8730. 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/USCGH2111646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10767c637eef07861a38310e1fe157f1bc8a0cce574f76296a8b375831956f2. 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/USCGH2111647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0702685ca9e45e37018ceadfcdb94e28b3da06137016b28eab3e7d00ac0cbc20. 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/USCGH2111648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10376e2f159cc071df3f6e44546292efc54fb963c90edf64fc62a68527c70cd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:23:42Z), 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/USCGH2111649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfff6b08a250f8c772ea2ddf937dde35e4613070657ef1b44ee6bb943cf31de. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:20:50Z), 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/USCGH2111652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd79db6efdb37382c9d4b6f7e80c55c73eac387aa7b238b9dd5746f7d465864. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:45Z), 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/USCGH2111653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea59f5111d8171954f9531e9f121cf8c95266d53034d47d11162f7aeebde7a43. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/USCGH2111654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da3b4cad2f20d4256b2cc6f7a04aae2ff328518fe337fcee744d61bc1c712c8. 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/USCGH2111655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba822b646ce952f6d89b8c78725bb0d3e8e4d735bd9d4b1db73269e43803bad. 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/USCGH2111657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8889c9ecdc748e1885d60d62f34e27ed40ec23905fa919ed97613d925769352e. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/USCGH2111658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d2664c87ef56b054bea607f251c1e4990d59abb9883846e2bdec71a91d59b1. 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/USCGH2111660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9f2c3df9984c1674afb50ed0319f3c761e7ce3a3e34c5faff0c5c33589fb8b. 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/QZHN82240041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15d0cb435b59979fe887b07cafd5059e058ed37ff6298a19fc9c7923dda81b7. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHN82240050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffac753f6cfa51ab6504a05d27bac1af0da3364b6f34111dc4b980c9b59bfb1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN82240052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8800603bbf9e4010ec05fa9af02b7f817d326272656ff74ac40bb75e8d3ab9f0. 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/QZHN82240053.