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 0xc31ada9bcc1973a41f8bc587775c009f135c3300d1eb7cf797ad5e4b3d7527d2. 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/bf83cac0-467e-494d-8b12-da9b30e0fc71.json and https://artists.proofprofile.net/proofs/artist/bf83cac0-467e-494d-8b12-da9b30e0fc71.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 0x20636fad3fbeef983837b3141e52869cada14b1f5ccad8d1c7d4dd81fec27ee0. 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/QMDA72470372.
Variations sur un sentiment - Variation 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c9312c90497d77e2108908ca7834ce0ea72966d04513d3e3ac2d3f5fc44f86. 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/QMDA72473196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9654a17d7c28dab6faa590a4d5597d2a626f90fb3f77a5719e63bad3e7b9fafa. 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/QMDA72474149.
Variations sur un sentiment - Variation 2
Variations sur un sentiment - Variation 3
Variations sur un sentiment - Variation 4
Variations sur un sentiment - Variation 5
Variations sur un sentiment - Variation 6
Variations sur un sentiment - Variation 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e31aa59b79c170ece3aecdaf983680410cb360cfee6c949edb3fb5a6577bd4. 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/QMDA72468299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13cfa4206f63770b193a43ffd5d1612c6dc8e37f2bb7bf45830d3a7f370aa2b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QMDA72471039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc0b0c5452769bc8f01c84380c1121a31bac2f74e63aac2fd72f7a84a25e4bb. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:10:33Z), 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/QMDA72473223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3a89172ec9abbb0401b8c4268c878c794d7edcd465b8686c17f45c5ea3ce3f. 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/QMDA72470687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8392bb4960c43007b122650c1882ab069cf00b4c882ef43cb750f41a98222e68. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:39:28Z), 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/QMDA72474282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ad7dbbfcc349831e8e3ad28a19a2c6afb04e0dec624d4e2795cd33b198bc6c. 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/QMDA72474428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa66bc164cc7980fb17d623db529779640ab09b863ef75eb23af3e6c8139ce1d. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:10:39Z), 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/QMDA72475400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdee5f176edd907652cecedcadf0f031265ff39308814f762db0841f683e825b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMDA72474166.
Variations sur un sentiment - Variation 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d330b1f3ea8a5d8e0e893054a0525b02fd2cffbcab9acf7206ecd18f7191fa. 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/QMDA72474168.
Variations sur un sentiment - Variation 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e19aa5b0d0058dd98d44f572989dd542058ab1640d30a8b4affef867afd95c. 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/QMDA72475402.
Variations sur un sentiment - Variation 10
Variations sur un sentiment - Variation 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cea3538e137258ea64a2d938d0ce0cc5e52735128005172d21734c57df5e351. 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/QMDA72473285.
Variations sur un sentiment - Variation 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ff8865ceb96db246e3772836479b7b8c99d279b78d5ffc6658c703dec279c8. 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/QMDA72473299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba40fb11a583762975df3b04c82c7974e2f76d73e2e5e4554aa6a035924537d7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:43Z), 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/QMDA72474288.
Variations sur un sentiment - Variation 13
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bc1fb3f74b8805f757a6e04374e015eb687d8652109e40b167aa415c04c3d5. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QMDA72471110.
Variations sur un sentiment - Variation 14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816ff690be6fd87dd6852d2dc9792502d736b584af86dd0d576df8c305b768e2. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:52:07Z), 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/QMDA72468434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47a99a6ee13c88ec2e2709805a34ee241022b20b5fc0d9c1989d5481512004a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMDA72473312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3d080825eedc7da09af30f751b91ec8ffcb653d08b34f6c30440ddf54f97e6. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QMDA72474458.
Variations sur un sentiment - Variation 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f470d5a1949388a809a25f89e396033518306fa4e26d69e6ec8e409c185b1e. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QMDA72474178.
Variations sur un sentiment - Variation 16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f74adb43919a9a326f13c56104f44a99e327fe25ff1fbc0cb4be12f8d0223d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:58Z), 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/QMDA72473342.
Variations sur un sentiment - Variation 17
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42f0e65c8c05bf606535e8230d50f9993ac5c95bd58b21d0b7710bd219b1cda. 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/QMDA72468475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ad975c15f4710f859b36bd8ee6da98e9f1b37f757c2b526824574c910e0c0b. 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/QMDA72475416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2b699c4a701499a2e658c9cd320d232a73c02fe4cfb9088290bca59a83d7f9. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:06:03Z), 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/QMDA72474296.
Variations sur un sentiment - Variation 18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd6f10ba06b4b790a978696a9aa2e3c2545f9302f7e77fb22f32f33c4f2444b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMDA72474489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08464262143ce4fa83f56a7650b581740ddcd2a31d64f479e58afb28071df2bb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMDA72474188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2db07e537cd102fffe346a5e440e412af5d9e5150431938a03b103f3554fb43. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:06Z), 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/QMDA72474300.
Variations sur un sentiment - Variation 19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df4774f73c6d6f269e90bebbd361e6e5373d5bbab4f2a19b78c1ec080ba498b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QMDA72471173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f641c73ae9524c36b14c689acaa689b3db3560a924110969673966925c12e19. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMDA72473359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474b0c929d65e42e20359bd67fcc89977bcca483f1936bbebd912f0f15439ed5. 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/QMDA72474189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb7a594378fb44c2b78b6103846252ebcee5631c21953d015262e4e3bd79ad8. 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/QMDA72473363.
Variations sur un sentiment - Variation 20
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb90c918f63e93cfee59ffc2eab3c3794549a992dc0c5f02fd901c78848d928. 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/QMDA72474216.
Variations sur un sentiment - Variation 21
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca39eb87e2b4c6c444fc0ef14da14038ee707ca815924c774828f96a99637123. 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/QMDA72468991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673bdbccfdf1c59cbef9945fbebc7c9770a90a8a70c6e383b10ef9a95505f4f7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:05:01Z), 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/QMDA72473365.
Variations sur un sentiment - Variation 22
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d5159d5dea50d6b0660661a1e671d48966867ebee395d1af58f33ac6968041. 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/QMDA72474520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b915ad0bda31e669e89bceba38cbef3571e6e80f8b7c59e7ad60cc78856726d. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:30:13Z), 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/QMDA72474219.
Variations sur un sentiment - Variation 23