1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa5b8a4b0117014753b913d7617698da45162a09305be352ccfa1e5311df0c69b. 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/30c7ed37-eee7-40a4-bc2d-8ef4fb1a8000.json and https://artists.proofprofile.net/proofs/artist/30c7ed37-eee7-40a4-bc2d-8ef4fb1a8000.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 → block OTSBitcoinBlock must exist at that height 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 0xb2a60fab06e77d6bff3b707f83f4e84f84844f094d0737f55bfff60ed7947625. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/UST8K1515094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e495b63c675b53620c271a9427ec3ceb874b50eef1f348b7a370a29f0936d7f. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/UST8K1515095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fde0438178db433c4d2b19d1d395eed25d24f0c489a15f055de1f59e76758b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UST8K1515096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70b8a333bef01b564884a921dccbc555854024cf91dd501f583132eabb7fc0c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/UST8K1515097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7f59b609ce2bc39d5ae53725a7852c4549b533da93d13d09bfd30887631a3f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:39:53Z), 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/UST8K1515098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dcfa7f983204ee24fbd8d41e8a94fd30e3a1acfe5932f1b64969802e4f2b3f. 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/UST8K1515100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441ae7c96a38d31a8e9ee8c45c432dca1e6f4bcb271fc9222b850f7f836ab740. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:50:39Z), 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/UST8K1515102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb30ca00ddf0f4d88d0e3097b7ed8199b76d295cdadfef682b279004bf2efb6. 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/UST8K1515103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f2c1fc5a79d8d1b076935ad61cf0fc6ffd068ac2a73935aea682e152c67fd5. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UST8K1515104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376ff2207bb6ccedb6da7c179ee517b0b184b70eb2e95e840fbe026507748acb. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:05:47Z), 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/UST8K1515105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e84de59458cac3bfac7492b08917cfc4306b3169aa93d59e11e7fd8e644ea1. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/UST8K1515108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d8a60efc11b46e6af662a952e60cd7279a89eb57d82fbdba28bc96cf6b411f. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/UST8K1515110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2c48aa257f4caa543b2d9aec78ac863f100f34ed4cee05110886d3c19b41e3. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/UST8K1515111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d22b7fdf6a127685cd4c80ade2fd2098aef715fb0d698e8ede7118e675f965. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QM2PV1501537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faf4e32de15a887e38be98247dac842b59bf4c912aa88421aac151485e88b4b. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/QM2PV1501541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3107dc7c0273f837ead3418ca38e47ab1e0ac24e46731768d7ae1b41e37c5805. 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/QM2PV1501543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8f9af59d43df42087cf17fd5d72cde57521cebd772b8b4415388e0a14f14ea. 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/QM2PV1501544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7779a61a95acf62d756ac9e26e3a3de8967cd434897d69ddc57534fad735b9d7. 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/QM2PV1501545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5abf6ae72fa55910797d83176ed7c60247efe2fd50de712e88a85656d65452a. 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/QM2PV1501546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c533dc5f65573b541b5fbad4c25d1bd6f68962968af48da29599aa4ad3dcd7. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QM2PV1501547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc221946094a614c5bb3c29194563402055f4a8bbe543aec5291855098b619f6. 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/QM2PV1501548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512037aa14b6e9cd868faa01cb2f90b34cf854a51ae1b23a577ee51ced968941. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QM2PV1501549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426ec4cbcee9db2a8545b52c6e30770604eed6dedc198a28d39c0df1c0cac444. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:38:12Z), 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/QM2PV1501552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0b92ac5e3fc9aa9f5e935a62064caf9e42a2ef65c2db03ce76a738e0d9dcb4. 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/QM2PV1571807.
Well Hang, Volume 1: Wolfgang Amadeus Mozart' Sonatas