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 0x1a1720faf0ccb1cc375f5b27db04c4d9367e900963a020c4f413efd32c908f5f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8cfaec6-d4b5-499f-8183-34f8a3786d37.json and https://artists.proofprofile.net/proofs/artist/b8cfaec6-d4b5-499f-8183-34f8a3786d37.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 0x98537d2864f19b0ccacc972650a6a9fc85f9b700154468cbf2ae3fd08dcae88b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX762140405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7549f0ef8e5eaae05817e1ab0cef0e97885dafb4b8e9f2217afe09bb88f5a1c. 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/FRX762140404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe813b4152d85b2391108a41989e561a046bea283f91060afc3866ef6baedce70. 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/FRX762140400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdeaacf7398de7afa9162d4c106a28ab306d7c15a68c971044eebd3e0514b50d. 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/FRX762140212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141b94363e8becdb853157b1fa0ce6b4978397e156d7ab170fb0e08f1b0e295b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:10:40Z), 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/FRX762140410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032ba4ab3ea5c2fb498a2da2fa9898c990aba6b2ac9e70aa4cf6378844e84d67. 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/FRX762140401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec762326e0a768a54b28f78627e2a81a1e96230404d17aee681f6aa1f6c9beb1. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FRX762244675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0097746ca09b147f3aabc81d5d60ae3db0e524209ad2f3d011b0f9fd7ab1bc3. 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/FRX762141072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa3a70191f795da7c91f7333117777c5a1fea8ce8fe1c2d68f08c344b93f4c9. 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/FRX762148465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7edb12f62b34c40e06d3a0731595120379c970f1195d5c5039f5897dac729e. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/FRX762148475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b31f98a0fa4248046644722daee1f154c8fea9e135aecddf8b97ba96006b80d. 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/FRX762148473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d0e885090f117c6032420a2c874baae6aff49c74495d0bcd03f297dd1c4ec9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:11:37Z), 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/FR59R2252752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752f57addcf11ec42d6130080be2544c1f0b8ac4e1a9de033728149ae58d002a. 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/FR59R2252754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd13466bcac91e43f1d837953716a483f067c0b4903ec1458f9e26fa5718b9ee. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/FR59R2252755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ad3214d76f9db3502b43e667625791d547bc4c5aaf8a86a4be50722b95ca32. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/FRX762171563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd43852c7ecd8cd46c01102ecc05d2f22dd728a4dd28e941d1641b279dd96379. 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/FRX762171566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf1e1e614c596b05eef68cec9f6ede4bffaa034990d49997f25d9f1ecc96336. 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/FRX762152907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced3616f53824b270a65aed8ef16e3465d01835f52b74968281bae9b51da2bfb. 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/FRX762152897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6050d40634e134a9259275a7349b1f326cb9b9ff1d3f0d5f8eb880d8576c459c. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FRX762152899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cd860d0765b69014308efbd6f16253c907ca0091a71672ca2b2afaca3ae72e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX762152904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0c02426a271004bf565245706f7a0074b532796ea29d947bcca8d3510fe79a. 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/FRX762152906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2bfde20090c49733f1aba6a6b882cc395fcf09a80e0432285ea0cda727f688. 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/FRX762152927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685209834be3fdfc7d22c26a48e9e2dd932b9b98f660a9d638ecaec1ba9fc8e2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:58:57Z), 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/FRX762152903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaef7f81dc58bae9823abe342539f54b02caf198a69255b6c0581d5afb4c2740. 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/FRX762152929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a8a22bf93dac4ba978a72a081645e6336b8eac193ebb684d0412a5e4a126eb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX762152928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd10c42348f59f0e91d2a7042806f1bfbb2ecf22a8094e56a6519813de9f371a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRX762165888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902225e39db0184d08f16e4c0805e3b13be4d7a7f38b0dd06b7463991d499054. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:22:55Z), 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/FRX762165893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346846b9c3f0c5810c719fae690ae6413821b0fddc10e8af8e715a3bff182741. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX762165895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceef311362cf81c0b282fdb992b880ffca7ea4c57c27e19259e68cbd5c9ea57. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX762165892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc9c1b2188799296670f2c68a241931e389190cb2e56b8ec3a36527ca642918. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:02:45Z), 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/FRX762165894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ce1dcef33b4716e19b41df437cb1efbbd8805a8444c354608c05acb2fdba2c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:04:02Z), 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/FRX762165890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f82b490a578a78edcf575e9cc6a2e81d9168cef9bca0467eb88e3b049dbf2b2. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FRX762165896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b87da4d1337c6fd5049d3c27314b4214f72565bcd80476e0edf10012391e5c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:24:42Z), 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/FRX762286235.