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 0x2fab34128ea5fa5a12df51766c48355d1b128f29e91517218a9c108ddafc8fcd. 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/5b1b9d0c-0fc8-4928-8439-1ea848132577.json and https://artists.proofprofile.net/proofs/artist/5b1b9d0c-0fc8-4928-8439-1ea848132577.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 0x5fa3f9615033b98c1b17a8afddc2c59d2054f95347fc901960ed2a098d2b2727. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZNWW2004884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd0bccb8580c5792a33195ab40a4f534f6591bab8fbf5255f127f127503daf6. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:47Z), 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/QZFYX2185050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473639297e9d2c4518568a19bc8e73d691e0662877f1228e15292a48fe5417c2. 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/QZDA62113711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0347686bc7a0ef2d048a887be11c0260bb89050592aacad8cfe3d3e19d25897. 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/QZHN52115520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6247d887c15416464128882dd87abf2101c1ad2cad58f4149b703131eeb55767. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZK6L2140444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28766aaaf76635d385559c1dbf68948bc3843e9ed0a0bc23a4428be33780454. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:43:49Z), 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/QZMEN2195051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f825b5eaf21555e45dd28cf807348ec546836bf87e4bd530d9902c46bcb766. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:35Z), 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/QZFZ32245135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7e9b73f3180ca428c0cb7f79cddc888c0f37ececa4a8ecdac3fcf9c3ea257d. 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/QZHN52273967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d04f0a1d87bfac632f5e7034cdae0726d87d38c2f04826cdf71714117b25e9. 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/QZHN52273968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cc9c07e0999fc15bc5318c5260b983a93809d7146381cdc772d330b8c32997. 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/QZK6Q2205043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f45a35cf3e67fc13398601a9403ad9b1be882c9a2a4f6f92431698a629ba510. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:52Z), 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/QZMEN2265296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3426f74331901fdc8ba7e9cf960481e1d3a766fa204723613b449e95e65bd6. 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/QZNWV2225068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9767dad2ccb752d010078b0d1b253f61f619fa0177fb0d7ed9982a488fe468e6. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:51:27Z), 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/QZNWV2225069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e4dc4871740b65ec8ab90dfc45635068a536611ab848c9fe0b55a394878355. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTAS2255840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48450d024d9575a9be52c54ef8a3ec4cdbc7372c2340c643856035093d4bc2bd. 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/SGB502367730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d95578a278eafb168324c528d26351381fa29461ca0e19b0faf31c742c5b2d5. 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/SGW502353294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efddb3678fe44330b41b19439ee9b919f277b4cb35cd363eb18094f532465ed. 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/QZTB52325528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27012ea2b63ae6253a434b08d5a59cfd9e6f92f2d1f7f8e9f76c80fda6fb071f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTB72396800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7949f877e1f81fdd9ec420701e2f8c257b1f6d802cca8a25122c922eba1f74f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTB72396801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9656f948d94e9843a01016fd46c4c8ec2a31dd677b4fc35ec4ebf4d40e2171. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZFYY2457390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec0e7879c8286a913030b964a841181571b1f9ad1f0802479b5dea4bf23de83. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:29:36Z), 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/QZES62475805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8650d9cde647d6ab836e7ecb9c51106cb8fb237db4054bb19ddee6787d4bae3d. 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/QZK6N2468290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964449550df1a27c4f4367ca25fb15d293e1366fd8d229ef3f74682d08658d7e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNWW2476530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e47f557ff8b41226f6c0511831086333c7303e68a4f4b3d08e84678f72d15ca. 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/QZZ782448918.