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 0x0aa76475df5ef4a746ed2a7f698b49f7914442efc51920448038d85bc07f43dc. 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/f5101530-3178-45bc-9f79-60a9b8b4d208.json and https://artists.proofprofile.net/proofs/artist/f5101530-3178-45bc-9f79-60a9b8b4d208.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 0xc7cbae3d99b292ce7a3e106262b3d8b27be559bec430bbc0a62c46c8c58efdb1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:44Z), 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/QZPXF2120457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c676cfb11463ffef774a3be7045522d037e24a010b369d3f70582f6e9b0963. 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/QZPXF2120458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01312e1d8a8031aff79371e0ecb3d73799228ae959e0ef2a7d8d19c904f89535. 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/FRX201735421.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd205faa2692765df19f0ed7027c3e659e4bcf75dbb0c976504861e800f7e106e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:09:27Z), 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/FR2X41814922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d2ad518f847211396009466159dd87df20b35c30a145691ad12531f2375bc2. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/FR59R1856815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7520aa96a66d7f2e6fd49fb81431358a0d759854688b38b33196c9536cb9a22d. 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/FR59R1893944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a119770ad5543af7a20786e6af426a5bc0387f643a1aba6f60ea57d20a2fc7. 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/EEUL32208024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cdb0f7c31b3c91d321e657f0698e65ac22ee4cb2981d4b29117bfc9994b295. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR59R1912564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3052d2d11dc76b995e3797a7c41c62352334d4205d22861c7cab0058a9615fb. 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/FR59R1940063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea898bef4573ef1242d416dfdbbb6f311ec309a9492a40da2058774de69ac37d. 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/FR59R2027439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2527adb9e3e08aaeecb7a454ff48997358c2f02c96b850ac2aca91b274c92a55. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR59R2026920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f04622a590049151f98c464e4b00f8b38995691fb9b9caefe48c79999f8d06. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FRX201967356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa259e6a8ba5dc2bad6594973930b06ea8c7a00fa92ea85cb61cc939a1fd876e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX452036716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a5f5268be8dc389531f8cbda2b7a00e504c2083ba752ee95d95b90aee74668. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FRX452040086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520fa2f2a34730750d775da3b123cc8712b3a78ff6601f883f4c922c45ed8d8a. 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/FR59R2026922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd628c89c46ce600d2b4c96bfa7e646e861f01204d6273483f77e77a8ed100e. 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/FR96X2028350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccf5487e992d7f2d8545ee0794c9d336b468ed74c589bcce359a5601f0e9df0. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/FR96X2073651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21866790e0dfd1addd779e5f4aaea1f12f74fa17ceaa0acc9eb2ea8ea88a2828. 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/FR26V2040172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce8717f7cf751346ac3970fb317468f46a13c63d0e6eec84e426a00dbfa5d81. 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/DGA052003339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b63917d237a4bc97d5a01cda8d497ec83d65a328eac638632d722c17c35354. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/EEUL32207810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf59b0a9a1dc1006ebb5b26cfc65c90a595acbd057eadfbc46f9c5e4e68abe7. 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/FRX282137037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee8a268c84767804002d86dcb860b441587e004042f6980b3d97fc68d3c79cc. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:31Z), 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/FR59R2236956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cafd2a9c919f3e44cb503c2baa7530129f4f9ce1036f7f3463acebace1b2f7b. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/FR2X42210249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce89aa73b13480747b55170e8dbca003c394931f478a8362e083578cd034669. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DGA072301729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee502a2a39b46bf0727bede319fd26fab8517d9e06187ec807487c14ca21b7e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA082344935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c42230eab2273b9cc41248728303959d7e38f3b30318a99979b88a3008c5be0. 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/FRX762536314.