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 0xded12025bda8dc52a2539dc93e870f26fd3131a9c9c2a994ec0b2014039d64ef. 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/82d8c9af-c4ec-491e-ac0b-83b41799019c.json and https://artists.proofprofile.net/proofs/artist/82d8c9af-c4ec-491e-ac0b-83b41799019c.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 0x2d12b4c52f81d2376c7f8bb79c128ef9f6cf8a239af5a33d87c31c3c3a4629b4. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/FR2X42008284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4407fef42fa89a55d4df3036c8af3939858953e41cece68143c30e8082555b53. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR2X42008288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b057ec5f443afa426e5d14192fa58840562ee430a770326457559b50be40be. 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/FR2X42041634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e82e1aa6fb24b3c55e9782b7a8fe2401f529d2ab5c54c3ea18c7e835edf495a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:18:08Z), 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/FR2X42041637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04d55a0ff1e05fc11775738c542b679f621ba451344f82054a39f5945666201. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:33:38Z), 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/FR2X42097399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ee7c879a416c65448a259fcdcf0e34499de9ccf464cffd63c4417759429833. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR2X42097400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aff3b5dde5886a958acd198a09cc47d61ecf8c9d6f44f8e58af679b5ab401d3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:03:12Z), 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/FR2X42097405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a61b53cf97062274a92b23b45d72ac90f350c58b72588e1defcd9446839ea0. 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/FR2X42097408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c294ea6b6e90416450c56645a12a635dd72e3dc4ac1bbd9e34ac1eff63fef1c. 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/FR59R2038406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0144fcb38bab97d141c79721d98b19abf711dd86efcb9cda47218a365b4d0af. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FR59R2038415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69e082dab99e2039e4da642bc363c93ff4151d8482f9d2b236bee28f281e1c8. 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/FRX202057948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde105ba2639bd963cb9ee06bb4d2cf2bbd7c2fe06f2c003f63f515df7166a61f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FRX282027932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f030ced5c2367c86dd9489fe41112376dadcc918c7b37c73bce4a4ff862d2d5. 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/FRX282033230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b951f3bab3ef25206bb183835ab396bf40cdee8c09ad20b4cc44773f234520b. 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/FRX762027194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0bf5525a704e058427c98f953e4ab6184aa05b6733f5fab355a88b8ea7cf1b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRX762036300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f53edcb4519c43ac3d4cb6362e0b9083ac45cb973f910bcc1863ffa75bed93. 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/FRX762036302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7454deefb95697708e65e95be0f4f3079d91cef3d1d7dd902eebeb185c4ec9d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/FRX762036305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1f1c3c49ce7d562ee2bdba0ef1a514bdce12df55c925a9cca37dd7435043c4. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:59:53Z), 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/FR59R2112960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c336741c1910ee2f707ed2c61c6bfc40e5215d67dc0248b5550f888237d463a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR59R2261871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43eabc6e7321de0465dfbdc1b35e069c3e0eb7bbec13ba449362e000d61ec5f. 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/FR2X42399524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01c19d80753aa8806fd388471fa42c1e97c7653ff9cb14ddfebfb52a0ad5223. 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/RUAEX2224762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30b1d17f222da33e9df2c3aeada532bafb4e34bd52f2fb3c637ee5376b70428. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:11Z), 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/RUAEX2224818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba835a87cb652cab80da62ab79182d050c668468e22310cccf726163be15c00. 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/RUAEX2224765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6366a11bfbd7ec12ba82d0d815fef2048e246c26a79c4cfb3e40dae000b87678. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:10:02Z), 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/RUAEX2224766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf161ac4c8c66e2ec2ccd7e0f6cff13da28408002277ae2393730129b28910860. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/RUAEX2224767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a65729f4c2ae56a07d9c3c327d79cbf4f8ee8395451c49b5ec9b48368efa37. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/FRX202306617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8309c6a57e4dd2f9f1940ba7f70e281ea9080199db883fa2f532ff65b5d330. 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/FRX872376128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddf4e57776dbda01d208b60fe228c0c92401af17dba1a28b7ef906ef35f5d33. 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/FR59R2431573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999dab4dbff7a2bdb1ee97c890f2d6b65f56e892480bd316ca5c650998d885fe. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX452576694.