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 0xb17956d3229a7bf85b9e7ae4758eec09aad87823a3cb0b87d295a81234525b9d. 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/311f3756-1444-4e61-8849-6222e7fa0090.json and https://artists.proofprofile.net/proofs/artist/311f3756-1444-4e61-8849-6222e7fa0090.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 0xcb144a15a457b3cf51dfbae025818c5be81a07511105ad131ed8f4dc1662f38d. 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/QZMEP2193654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c31fc83f5f72032a979659494da7a7b7abb15cd2ffad0b0190e038e37a0818. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZMEP2193661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa9de60fc481b6d0e2dd654f30a9ab0e6393736163005a8a196229593314bb8. 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/QZTB92429292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52137e941b68ab07418572c25e13bf641eb9c740b5760ba204373b3041f798c2. 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/QZTB52464894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3ddd8a5f226ca8d8522240d1f369c5fb6e722a7ac92970c0a29e2b72604dc6. 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/QZTAY2488398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd18ad61c444654da750ef4880d3f63ef6c9fc4fdda4d3d1763bf3697bcd1d7. 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/QZTAS2456663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec9958b1eda449afef0bb1f0a3d0798103f0ea72feeaafd18ed67bdb370a66d. 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/QZNWY2419648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10a947006578054c77334d0ddbdee18a59fecbaa2c0a4ad3e38b7eec65be57c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWV2444661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628f500e9695c6bd3cd9629595b8110ede75105e44c272da73fa887783f5d74d. 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/QZK6H2410534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09336ee79f5bec4ccdb3011c0918fa71a51b0f88f93b9f50b5a66876a62ddf57. 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/QZK6L2431732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdc84df720f56007272f3693726b91396e3b6f4a8c82c937e8d21f8d8472dd4. 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/QZK6P2446249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c37231e72a2c3801767c04a8fab5433e379103b5c1a60cba823d1f5c91ccf5a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHNA2434742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5430d88acadb1eb095326ed347f68af162f62505e5e481b12b3fe8c727f5d3. 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/QZHN62410808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8899234a53503a5eab70d1aa687749fd5b3853ef49fabc0f0b50ee3ec966b4. 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/QZDA72443157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36af4cc3321218446358cd5c231f1df041ee8dc3197d3ede411d595cebad3ecd. 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/QZFZ32455365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523a8fa6a736d6040b3da79c81f4ed4a2509b0efa99adb1e17dd33f56f05a77c. 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/QZFYY2402201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209b183d95689dfdd198f8a02ba5e337c94ca2bc339842965286dcdc4f65e443. 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/QZWFF2337366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd2a7603118499081b75883225cf5710459fa2d6e387e761e5afba7057beae0. 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/QZK6G2328732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d8307f3d7e2602ff4c7783068219b0f12d96b03adcaa87c473f70799f497d7. 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/QZHN92390948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54239a6d9da4fcc0136f7367c93b69cf3a04083aa50e7253dff500f317158a3. 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/QZHN92335052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7514d93a57e8ab66c596d35eb9b9a2463c014298bd5427971bbaa49a6d587b29. 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/QZHN42370564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d343fb503520e2c58f9880b07e25ecb37aa0120fa38ff05391c304e1e4d691b. 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/QZHN32301677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3720e016e8a35b99d6bcdbe40b360d34d086826cf26659ef3ac78bb8026ffc. 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/QZDA72310856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1041b743e61bb24c0a3d676cac25d6ec012054b4c7ecf1943b563a8fc0a6352. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTB82206472.
Old Regalia's Hidden School for the Magically Impaired
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f524421792b22133e9d5e4ca37690af429b65f8a8c477e3be32ace9101c4a0. 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/QZTB42217052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d6a58bbafe52def01d728b4a7ff9447c05e703a13f01dfe4477b74de34d2f1. 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/QZTAZ2249214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750d178dc430e2c58dc63d0c3647e37684d07fc418bf0eeafbaf993c0af34e5f. 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/QZNWW2221963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b88d3c31584ad5d3a7e1579ba68feb56e01a143b9de55e51fbf62e47663baf9. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:24Z), 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/QZMER2276219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14d2b83dd92192220949a88d56095e8094c68696f4bbeb42aa3e07bc4d5b377. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6J2262512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bf007cba65c22c619ba86859b5d638703e878f6685bc62ba813d94a1adaeeb. 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/QZHNA2204595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae521bb3227e7610a282d2074b9089419c33db0d814d1170b96dcb5c4e184be. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN72279699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0cd2618637f1c631d06fcc240de2a93c2c8d47f10a9b92ea615decfdf9389b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN52216704.