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 0x4cceb818438946caabacb58436752f4ecdde22dd146fec59fa457ebfe575ed3c. 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/dadac7b4-a8d2-4cee-adde-3031bbe90a88.json and https://artists.proofprofile.net/proofs/artist/dadac7b4-a8d2-4cee-adde-3031bbe90a88.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 0xbdca56ac737648e620fd2fbdbb5b520d53262efe770f55fadc6345d3aa0ed354. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/GB6GC1000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c6048634f814bc127ea7e3f94de1b7eec5cb372daec96d8daeb789f40e8021. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GB6GC1000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efa57dc3bad7ac60d4116ffd4cf47a8eeb0481327f934c6041bc7141a821c86. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GB6GC1000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298d6de28ad4b8b9e30741affb79ede4b03805244b08149d2b474d6544d84c93. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/GB6GC1000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fe7db69f237ac6693b001ee767de4837f8e2ca3918da6feb4c5cdab37815ad. 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/GB6GC1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbb0fbc5fd7c6a4eee35845f74852f227b5d7d1acbed7dde8239b160fea810d. 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/GB6GC1000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c9947ea311a3df519f3e59eb207234f3db461b61e554bacde83103b0304465. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GB6GC1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde9f1b83b189db4746c284168238f55ebb38a382b078c013120f9e87d3e6e14. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCABG1220200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b527acd0ddca7a775890f23f49705963b4353eaa67f7bccbf102eeac95ede0a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCABG1220205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6370cced09a5e22f1ec54292f03a1225e2d2b7ee9c3f155ae3bfe256b26f882b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCABG1220208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545e98ebef72c4721010ec36a86c2280c55cab8c33f9d8682196b90fbba6aa00. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCABG1220211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23004f7bdce15bd763749c110859d456d611c3e03f75b60dee860a2292df22e8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCABG1220212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeab464ba1559f9269e8682a1b292e39e26e2a63d181bac7a1c69046d29166fc. 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/TCABG1220215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9673ba0dae674db20dbe47cf2063be8f17aa2d52e63dd10783fb35b6018e5da. 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/GB6GC1300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8566d5cd99e1218440ad48046fa1df54afd263329b4d5a41a295acb9949aa7e4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB6GC1400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8566d5cd99e1218440ad48046fa1df54afd263329b4d5a41a295acb9949aa7e4. 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/GB6GC1400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc0dd0111baf2f538d45aa7bb59ae1872ce955e8dbba046da3b93e659628d54. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GB6GC1600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774e272d4ab3b50767e58b0a7bc2cc01b073ea20e185548b8abb67c116918a59. 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/TCACL1624829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f533cb5c806a33ab4ec4f5ffb4e0b053a4b2488c86a3999cffefc331f9acdd1. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBHPX1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69768c16f06dad42e2ade4c8a9fe8348ee00c6c0c3092099388bbb03999d945a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBHPX2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377bb11c77ffef4972cde120bdb0e386bf51d0cf9041ba9f4ad57267aa0bd35c. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/GBHPX2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4a5dca9bbb6435fd29861041252da8ad7ebeba22734e04e3bcf9e325a39082. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZFYW2182162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a80400879ad2c977b3d99ff427910670dc3c1fad1608eebcb17890f86760c45. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZFYW2182164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874a5d5e6c54c21b26e42327e6847db070d9dd9599a0c24d67032330a4ba484b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZFYW2182166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee8d474fca26689669ce93ea1afa6bf0eb67b8a4870dc7d61861e71c1d647ab. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/QZFYW2182168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd635c1489cb21a9a50687a88a39288e7a9ea7715ceb791c0abf0b12589e9b11. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZFYW2182169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1555b6e67e15e671d6efbf5707117488d6872c860c88d5d1a46a03d7f5642576. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/UK9AV2101189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e66934b4bc631fb10d89bfc93cacb5fecf6320f3df809fb2203da8edfa35f1. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/UK9AV2101200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04559df7baf0300aaf9fed3de63632d6a8a8fb8189719fa17cce58df34324eb. 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/UK9AV2101202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc060ea3249cf803f85e264190c691300cd825a943966011d26651a001f866aae. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/UK9AV2101204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561b85eb0b11e6199b48b7de2fdda31fb3206eadd664ff79534f6e87e77344bd. 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/UK9AV2101206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a1d06c5fda76bc63507f1d2ba004d3d8dcfc17efd9401ba2921ed0f0ef01d0. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/UK9AV2101205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe271bf18bc8945d2d3892eaeaa3c59d23af3d6a671cb1bd5face72574a88175d. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZES72358663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24e23050819e2f13921a1d22dfab7cc13c70f3d5f50307302a864ea1d9bee8b. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/ITDE32300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a060d0321c617116e8d34e3ece9e6403ce05b370de6224ceecbd161369a6fb7. 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/AUMGB2400767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53adc5b9c49bdd3be755a36720cfaff840a16fb5d51f709a5dc40248bf288915. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/AUMGB2400885.
Falling Down - Live At The Winter Gardens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc595e8ab527c881f724897bbf6e1495a5167e69116c9eea8317c8251509794c3. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/AUMGB2501131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33153c323ba526e2619c0232eba598e5fed18d6cae20ae34f346d0b79a56a32. 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/CH4061901553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa46d7571a4173fdbcf05de8848342368db9a4124599aa9c887ef27932436a7. 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/ES5151800055.