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 0xc063f875f5db645f151fb09a4ba6fc34ede7d2a179fb99c23468fdb1acf6fb82. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b424e3aa-6b48-4c33-9ac7-78197f7983f6.json and https://artists.proofprofile.net/proofs/artist/b424e3aa-6b48-4c33-9ac7-78197f7983f6.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 0x001aa47c43943f2b0f3a4973f8572ab096e26a3eda6d67cd2c4b1a1031a92d54. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US6YC1500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4aa38fa74982d4eb977bc61a4716f70178373e69a60aff339ecddd01521de30. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US38L0702363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf682f2d4721a82cb5dddd05e1d46ca6676c46573559070d424e6d410f3d09274. 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/US38L0702372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c477641a939cfe767bd755ca22d78d32d1b4f495ec9492ba53dac560d2ee38. 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/TCACI1575628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dfd3b875bbca8789baca274adac5deeb8e49537f4d037d7e69b60f46c1b004. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCACI1575634.
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 0x76ec521e22502bcf286376b78e93c7857c98c140bbf9fd30555d40bddbceb744. 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/QZES62389261.
The Emo Diaries, Chapter 1 - What's Mine Is Yours
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48ac59375f8652156d4fc94460c394d24507e3f6a66de06c61dde3b8614b987. 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/US4KH0436202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffee056bfe9a1c4b4bf30dd5a44822b8550ababc070d22a1f948d7f4b391556. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4KH0436203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4490786f6d87c835253aa4be9d49082f68ddd7a6b5ef77a9fbc4fbbc53bfae09. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4KH0436205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83865385139e8e5ba2895da0556a60f91ff35f938e24a0d0163322378fded129. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US4KH0436206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc160d63d17c619715e1521223fb357945ebf3f91957463b1422e7a62a1a179b4. 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/US4KH0436207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d31d8ec1eefd42e05f493af0677972d98a8ab316e29289c98db6a3d905e5496. 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/US4KH0436208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500c64bbd5004b271d5883cc14c0e1e22e977dff68e7fa308a652225f066ec2e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US4KH0436210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1f4c7ed67b101ed03fa0a9e4838d7bd7f8ebb4e7cadd370e23563129678e2a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US4KH0436212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7e33893baf41ed0bc4bc9bec439828241c69ca7089adc29108f1c025af258a. 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/USLD91718301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28987ac42cf3a1ceb8e3c74c58c110846846bfcc68751c6f0e7839c9087c557. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:00:27Z), 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/USLD91718304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d1845ab1f3f081fa7b73655b10ee894b0f88365ce7b442724c6287889c75e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLD91718310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8335131b34e5a90152217ec0773f92e8be2c0772768e7d42083a403fdd22ca. 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/CALSV2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eee02dab0606e45ea1e86226e5e7b41812f3b4d5edc8ed12a691dd7625073e. 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/CALSV2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7e4c8ce0e4ed7ad6152d446ff9c6d3e8ca2f4c58d1b3b7e7c915c0b96b0a5f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CALSV2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cef16204302c600236bf3f413f00ee727c8461da623bd67273de4142e875b52. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CALSV2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73a2ac364694f744db6d99a0cde9eb617a99450704f4f289e4335ed485a5a7d. 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/CALSV2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eda04303f789a9a90af852a8f8f100f4bbca4bf555071f17fb361eb4ac61a9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFE2017391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01eff4a6146fc043716b9b79f7a623d8dcda4a45de2a032e3be88980364945cd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFE2017393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d0216d7a2ba906cbd4847a9e6272ef4c4e7e0e2332b02a6fe3d647f4b485b3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFE2017400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262072700250f7f526a1aad02fe7185abd540f03145fce79f6504803e8480320. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAFE2017401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1001bb90c24afd88020991bf3882321b50b145f194a9e4a2b9dc206fb645017. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAFE2017407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef45412f2d842e8fb34eebaaed915bb26846e91c2fad9913ad8df0f80c4281f6. 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/TCAFE2017413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1687726a1e954541b0a4199a372d0694246e1733fb9d9fefdb2936b8afb82c14. 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/TCAFE2017386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3a2624912438b3ad2e068c9066e033aac627c680294dee091a6b1cb6b217cf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USHM81367864.