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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57901b79e19fddddeb15de49134d455cff4cfbaf9e32a4ea10561d9ef3d3745f. 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/269bfaf2-a48c-4398-ad10-84ea35145381.json and https://artists.proofprofile.net/proofs/artist/269bfaf2-a48c-4398-ad10-84ea35145381.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8297f9767e78d170e9dee876d83b453c783d55013f86fa1ded901acd2dfb7c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:53Z), 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/DES650206501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81f53f48b2e25b71e6d8966ced56c4a7eb2bd79c63f4af3a394c8472e7a2a49. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DES650206502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0973c8da1967d87926791181b8c1bdbe0cee3ff6f54f32a42e00420919676d6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:30Z), 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/DES650206503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810f5948a45f209583aab2f91b09dceac588d6bb5a5bd8861032a2151cb518d9. 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/DES650206504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817bf4a2e9088b3d6f26770016355d4c420b2c305696f7e420a751e5bb4dc07f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:33Z), 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/DES650206506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7d25bb4b159f65a94c643b02a3f411970597244d4fa825b752313448458740. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DES650206508.
Avaloketeshvara, Mirror Of Four Directions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b606add7a341179b9ea07a80960f5379a9fdc4dcee1d26fbdddaadca234be0. 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/DES650206509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b9175e514040313f29323374303dcf2e7e72a291cd132a4af544fa42b9d1f8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:39:03Z), 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/USB590500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc39f2c1e6141a6e16ede96da61f77a223561b14d7c192437fe7f7b949fba3b. 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/USB590500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0e281554518b58d26ea672a98f62f3d7b0b45637913757a2107ad46ec1f203. 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/USB590500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e0740cc13bd66578e77a15b9f9f42d40df034d8d22c9e06f7e23f050d0c9df. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:34:52Z), 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/USB590500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c2e6b02500e0d3454521acde629ee014029d83f47ce2da3c634c7a14b249ef. 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/USB590500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c47724be75ae6b2dc725ca7839dd7346261f0b09ed26c1556f1b0e4fdfa5471. 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/USB590500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e587f72ab35b3d3da9f430ae1e3ae3fad83ebc9902706f16c673529ac7a610. 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/USB590500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d3013e02e17e28293820285471a217af8a3913f92a39f916be4b7168af61d9. 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/USB590500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b88f6ee80d0e5e579daa855e612657b142f0551cb79a79f6d71a2fd4f36d44. 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/USB590500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9986cd1836c1fe244905e6171f3fc9e19181dc0a6e85eeebe7abc537ec0ecf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:58Z), 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/USB590400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca9b8b96360feb88bd4c08d2aee2068a2a865296bc83c09365adacbe5fc77c9. 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/USB590400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124b853c7c28711c1bc1511cd1603ca5f313f4e98cee7f4b27d70de40b086241. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:30:02Z), 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/USB590400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79af55c45ab79a7f4fc013800be3ffd488d4a7d60fa30b134b42cdc05613cee. 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/USB590400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa619aefb0e9d4f85dd29f95ee2a5b333feef4f56770d967b02ae8ca77211504a. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USB590400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cfd0201f015c6e9569b7de17ea8d8ebf268bc904e98ae9e196590f11df925d. 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/USB590400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb804da7a85fca08b23a6b9db84c5e2b49f164a8067ac3213fd4c4f28e21235d2. 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/PTPV10624002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcd6d0eca0ce161e5e9fb98f6dd51b1e8a728bb52472f9c8dd9578a6bf5f4c3. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/PTPV10624003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6326584ec66c0b27234397e4e8ad5d20fbf85cb476d9cc7bb8113177fb5a7cea. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/PTPV10624004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc746b2af7e7f3ed572228b5313aac12f05bcdb4be552c2d7e9767282f2b27a5. 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/PTPV10624005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca98dfbbb6af8b4991291c7d7247a0ca1bf4ae8f5b3f9f94d5abfadb21e53fa7. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/PTPV10624006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a1d4c15a21fcd11408cd7782eca302118276247436ab8434964adc0d46dc6. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/PTPV10624007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb845f2c61d96e5de3efb7479df087063baa21456e8f86d9796362bda412933ba. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/PTPV10824201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7131c1063fd36621a080f73ee7a57770961e2bd0313df9cacd666507a2b40cc8. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/PTPV10824202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f19f5384f782a22afd18946a1044eaffd3d9ec4156c307a428f991ce950a653. 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/PTPV10824204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a596ec85e99b7e2a853efec64a6883a160bbd1f468efdd72714bd7c497dc98. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/PTPV10824205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0070088cdeda01680af8ef8ec5820d9a6c7c8aca167c7531f66be706e539e3. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/PTPV10824207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f5ccc388f110d556298f4758bc3d994011aebf820a0cf2168a83c4115f560b. 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/PTPV10824208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a442209a89f4499878860f25232521bb260e5e0c0a02262174f18ad829938a0. 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/US6R21473515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1db6bfaadf00b5e3419ccd31e08f08e5c6195639791e72ff0a9f8d349f6e142. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/US6R21473516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271c72ccbe50b40b2392e53b686b8edbb7843e2bc698e4aa7b80773ee5dcb70b. 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/US6R21474218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cdf49e59709d15ac9beecfb9c9d55756a3483e2d8d2ed503cbe4ec2bc03f8f. 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/US6R21477247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b83d49c734e2061801292acd5b52ee6e446289591961361ef6920868da2079e. 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/US6R21477248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ba6667f07d73d87c4a61680cf832981607c624d7c9dab9d80d6e174b18cf60. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:56:32Z), 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/US6R21477250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ad2f54cc35781e7d89c1dab95d4a52cc48f242099032a596371d3694f3ff13. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USB590400014.