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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b120818b44e30c78b46eb5097886db773935548a7c80753deb7880024191551. 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/e59a9736-c49a-4938-a0a0-fe75c672e3bc.json and https://artists.proofprofile.net/proofs/artist/e59a9736-c49a-4938-a0a0-fe75c672e3bc.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91a94907e4bc76ed057322f9fd36eef9b0ef27e59fce970ff9ee336f126264b. 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/USB440474607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e00981bfca8348624e2955e87079013e871ad4aae17ed472e042a83b343c27. 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/US2Y30620573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2aa54db78be382b236f8480007b9df7cf2621665f879924d18022c64226de9. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/US2Y30620574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95103d4bd4e5574c946997b5c8dd2e3119380befc558896af65fa5dbd005725. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USHM20530853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e41f89f0a75c9ae4d3bcea549abe05426ff29d9395262c9b9dd5cae5ed5f6c4. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/USHM20530854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ece35c4407ada12bbee9acf75fbf39d95960a997ff81942d2631c4ef85e1cb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM20530855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3019279ff4796821db07d6a58a0f1488bdb4ba5f4692026f83c39fa782c941. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/USHM20530856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b6bab705215c79098b3078288b48ea9dd6cb09a557ba4ba300099e43f979b6. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USHM20530857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4e703463e7efdac574244013c05498796734ed53d6e7bafe919ec8c57c8946. 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/USHM20530860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3690e79586fad64fce4784d87e7acee2b90fe97255caa68d5e12ff51f9c623d0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM20530888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5419cf95f1e6295f3c6e69684c4641eb0ff95d8cb6bf21b3e894161de23454. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USHM80629469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da042178a83cdb8c95f2beff8b981703e9835d00cf70e3760188fee81581c37. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USHM80629474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923eebc6b728f53ae5dc68e845d34a2318b0a3735deb9a1cd550a4281a3463dd. 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/USHM80629476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd91be9bb99c4618deaceb0f3fdebd995d8a56a8b58fc31b739bbd114fa3cbc7. 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/USHM80629471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0526bdee1976d48ff306563ff49ea778cc9707f7100bf660d6a03d4bdc133982. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USHM20530887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac28fc7f1cfb918e4b13386f0ea3ec2365fc1fdb4ebb1a68427cd2a300d4e367. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USHM80629470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c61d55d30c5694c7b1fd8b3ecaa9b400189b8818623de4b126f4ae353d7bec8. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USHM20530852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3923da5f9bd041adb1198a3f911b2eb1fd886509b1dcb152baa9618a7f84d2ac. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USHM20530884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4b34192a71559af7cac60fc3097b788c17ef7e4ee9936b43711fad6bcd7c96. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USCGJ1590772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e78a060249f27e1381f85d135f459cbe4647c8debf2acdd8db3be92450f944c. 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/USCGJ1590777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34f703c7aae36030dd1633f2e3a4cd0c882b2f2d82ed5082fade27b243c605c. 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/USCGJ1590778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52ab3e3665ad0d7e02a24eff9b0559e00162ffada9e1ba4f9554e648684b652. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/US2BB1600004.
Zero-G (feat. Tina Malia, Benjy Wertheimer, Prajna Vieira & Gawain Mathews)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f8d9dccdf2cb9b17bb8dd23d2f2d73574cec6e428a2bf0674f7741c6432d89. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHZ31200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d9dfc30e755f8268b5d26669542d5bed0f776edfbfa01c74eb598df9c86820. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6MZ1923676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2ea523fed5824e5c28956e52b8a60a9b633113177dd5e78f9bbb6654d55b0d. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USCGJ1950510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d1f7840442dbc315b40c7e9adea577dcf5e9d367c4b43939754ed3a0120627. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USCGJ1950516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d697a61e15281ac2d82e2be3a206cdaa2928d4cb53548924fa6a6a75c7200e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QMAAK1568433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb1c7efc5d71668e81d7f988acc54a5658e078e2d3a2bb578955f7597902c6f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMAAK1568437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e0fc8f559bee1d32c7fa3c9a3cf869bfc768b028917e43f579f40ee6da2f6b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMAAK1568439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dbaf2bf140235c3b6bb44ee4bd4382eea9d94e0558fbb0219768b7d9a3466e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMQTX2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f95fe5b62b85ef3442b124c34575c764eda89c823b0244573350b4f1fac33c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USCGJ2091950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6aa0504698da63a8817fc8d1618476e38555a740556bf0a3e15f80a969c8a5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USWS41717518.
Yoga Music Mantras & Chants, Vol. 2 - Sanskrit Chants for Yoga Class
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3309ef5c2eeca507d4e28a35e0511a383c0f1c9497a209e61d8d9add1c9a00cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USWS41415506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20475cd8dbd6f6ce49b1f2ee8842dc9107733761580a8816a06aa18cd5350059. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USWS41415510.
Fantastic Fungi: Reimagine, Vol. I (Inspired by the Film & Mycelial Kingdom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd91be9bb99c4618deaceb0f3fdebd995d8a56a8b58fc31b739bbd114fa3cbc7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHM80629471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f4a38de61c9ce3e88963674898a38821aaa8a109ede86dcc2eec989ab29acd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUXZB2000035.
SONIC OASIS: 3 Minute Stress Relief Songbook
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23146c19ffbbee27bb2714c113d6f3fc99581f5ea7340cbdaaefd71f769fcfc. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QM6N22419999.
Cicely Mary Barker's A Flower Fairy Alphabet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e02e049092299b2c476a842f9261f923f850b4633ef3dbbb3056ebde4155bfd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USB440493809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e26951e2080b7f3caeea002e295d2515670ae02cc42ed5cbbf88d9fe1f8269. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USB440493812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90ffe0848fbbc6763689910e45c225296eec2c1c9d1ada9d4fac1c0c2e969a6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USB440493820.