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 0x527b465b3c01cdb8ea7b3fb12a9e68aca2f27a81a4e15d6a99aabce4df3ec2f8. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5b01569-444a-4006-8d62-6d952867b8af.json and https://artists.proofprofile.net/proofs/artist/b5b01569-444a-4006-8d62-6d952867b8af.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 0xe818878ae59c65900feed2dfb74edbc31eec481df162c559025ae6a80b9d1a8a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:59:04Z), 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/TCJPQ2131394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ebfa053f651571b87eed7532602fe356c668df8d0e7123bd1dc6c205f9ed38. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TCJPQ2131602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee1db9ea30e58b6ddd581246f192cc3c656c35463d847d8798326d08c1bddfd. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:02:35Z), 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/TCJPQ2131605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa304857c1f2d169e37649432d70d9f16c4efaa2b8cb2cd7a349f4e416004c841. 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/TCJPR2294055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb9f6cdad0d1574734ffd9c429b17de77689cab051b2b4b7a4ace30f3123aeb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPR2294214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f26e167d9682f294eead9a9409288fd9bf0dd6e2dd150ffe69facb4694fcef1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:57:06Z), 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/TCJPR2294241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f33456416bdadb4af02d7cb347b904e450ea584b1c386581dca813bf15b7d1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:53Z), 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/TCJPT2274135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef4cec7d6c2a126def0cb286c45faf6bebe2122e20f8eeb60dc7a30070fcebd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:55:40Z), 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/TCJPT2274138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbf77318d5103ffdc5240b93586702b670556fa129bfa946da69e302e3db10a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:22:54Z), 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/TCJPW2390723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff3db4436c52ab73cb36a41da3cf923ff7284d34008ba716f4f3238dd2afdb8. 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/TCJPW2390783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fec0d7e8bdbe28707996f0f20a3d6628394fad804e7b3432e250e29629e7b3. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/TCJPW2390785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2519af58af5b5a2f8c1bfe1c62186f25c151d2bfa87eeddd60180b776b54d838. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:14Z), 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/TCJPX2390479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa5f76a738efd582a8646194725fb1bf93b61a944974e74dc96f116be8fbd56. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:26:32Z), 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/TCJPX2390482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0183e6f37823bc2814771e2b6e1115684015a45d3fbbe82335205933c4d4990e. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:31:10Z), 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/TCJPX2390489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837806957a14c138d19750ac49cb22ae43e1f6b05038a2c8655ec901d06fa666. 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/TCJPY2495165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd71e2784c25a12c80579dedb50b796556ac4acbc1bd351b28b5555a80aad66. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCJPY2495168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b9fc51846a3b39226c388611aa337c4492876111a542639215569436279f5e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCJPY2495177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b5dbd36450efcf208984df49057a380aa5dc899109090febf8a58b41b1a8e3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:05:51Z), 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/TCJPZ2487977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d58e38be5ab9bdce07db374a678382d3de6211356602453b649899258a76f8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPB2433884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e091090d9c4f15cfcb00efb82c833aad7a902a0081359cf0414420aeebf7f0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCJPB2433885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67e9c2d173927575f1a7c8af0e2b53c01af3ba0ee97433473715fcb5d83fc7c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:31Z), 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/TCJPB2492256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8463459cc81f208874259c7a898e1be8651407ee0183397c15db813f9ea58991. 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/TCJPB2492267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a095ec5ff3ff12cde730595ecc6062cbeca1554837dafca218ae70b304f9b29. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:38:50Z), 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/TCJPF2581742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a095ec5ff3ff12cde730595ecc6062cbeca1554837dafca218ae70b304f9b29. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCJPF2581742.