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 0xe3cbdf34ace3b531cff139eeeb4e3c9e2a38eac59a15f3fe9715fc1469cd112a. 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/502495db-8340-4b63-b908-6600f34dbf28.json and https://artists.proofprofile.net/proofs/artist/502495db-8340-4b63-b908-6600f34dbf28.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 0x2f3b930004868d43c8003f887ac418490892c27895e2dbe733d904211234bec5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BX4E52020096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb858bfce5e8e3b0ced36a1c74304caf384067578c835a7fb67661a03cc18ec. 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/BX4E52020097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9393398d1269d050285497ee635cc53e24383622aa6725cfc5f2418cd639146f. 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/BX4E52020098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38ea190fe3ba0898e583aa46f3f6a8497ff2ddc694fe67f8a481b21dfcf3f6a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/BX4E52020099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7795e04e73d0d5c0de7e68a1cdf364f87851b7bd58e389f1bc09f1a5057a0cce. 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/BX4E52020101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a07daf222dcee981d3406af6eedfc88590ba39fb81154ef3abda8817dad98d3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/BX4E52020105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e962bad93314e7de28b038e7c4eddd366508794d49d1d7e0542ac9ad8473c4a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:45:32Z), 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/BX4E52020109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c4aab0a869700b8ac62d0b220ef21cd40121fbe4c20d32ccdcccc866529b93. 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/BX4E52020078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb008469bc13bca3237e1cdfe1146bb0e90ebd0cd92dd019ac5ae297427ddcf25. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:11Z), 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/BX4E52020079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e88c467ef06cec74bc08b58f3db29a9a1d34662d4c81673f7a71ecf098e129. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:56:14Z), 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/BX4E52020080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6467a427945a3c9dc148d182cd9d7646f085aea2889d61d7ac658449f229a0. 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/BX4E52020081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7246d1085f04e33f2163c7649fd5d091511ab8c0e26c3e42f7b38e0a2f5397. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:45:30Z), 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/BX4E52020082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682c42f370b7d8994c02b43e552857a9bbaba43f0e1207673eed3d80aee606e6. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/BX4E52020083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25275e704dbd9091b4e8117eb5c6017529aa06519bb39b0f414812f2553e836. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:13:47Z), 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/BX4E52020084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee90bbe62c56915cf1416294d5cbeb824b758b89c747c7525772ed6c6f94c011. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/BX4E52020086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d44c8be71342ac4c43b9c08e6ffbca366e6d3058fb74605bc4d8dd157c82a3b. 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/BX4E52020087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab467926a7eefb1d8d7b2d705f0e827347af8a73de9a28bf7f8aeb31687f2a8. 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/BX4E52020088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab07424fc8e93ea2aff29be9887181cfdb4817518f991f7eff0141018afdfb4. 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/BX4E52020089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd232f09b7389fb744d6f55f9c7dea785788d371319c2dbbfc516c71e79352359. 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/BX4E52020090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564d4c8ead253a6b1bfc8eb8919705b59ae77fb1c1c832074d55b73fb6461958. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:28:07Z), 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/BX4E52020091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a49ce7f4ee0f7a281607799a7774a86d6ff672fe6cf3d677ab47ae4503ddb47. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BX4E52020092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb1bf93379058057750a8f55758f5a3fd008666e46c101cd4855ee207fdd426. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BX4E52020093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6621dd8edb90d4286b5da57a7686efb3936fb1827405fe04b306fc3487d7122a. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:06:48Z), 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/BX4E52020094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fa0607e818a7772b9bc38aaac324063147149ab8be8c2d10b5d0b12f006e62. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/BX4E52020095.