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 0x8798da88f5c58750be270c99fd62ba82620159e2eb8eb245c4ac0a7e877e6b9a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb409617-b4da-4462-a9af-263f9c233eab.json and https://artists.proofprofile.net/proofs/artist/cb409617-b4da-4462-a9af-263f9c233eab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lo Extraño (Live at CKXU, Lethbridge, 2016)
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 0x727ef5d5f75e3a028b46b18e56cdbeaa4b1ba2da641d5c57091cccca578a6cd9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBJXP2141303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef839fb8092fa50345a544c228afd0cf7fb9090562ebe5e73e37cb7065f5c34. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBJXP2243404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f79e6dae6c95292c08270885754e32c057b113677e28464e180a4697966f8d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBJXP2243406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cdb14bcc598bed8614af59d4e289a7f3ac4ab70bfdee8875d264d106500ac1. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBJXP2243408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c289c97929ca575dbd6b3e1f0b8caaf65032a8a724200941b08aabd7ff5c8a0. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/GBJXP2243409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301deae7082e7333ec1e766bdbac172928927a2688422265196056ad35c75700. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBJXP2243401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafac92057118dec9b8b95ba045d1a502429e7f40f9544e1898408830c20bbdf1. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:45:04Z), 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/GBJXP2141302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8947f07dcaefdd50cb39464bcafc0a311f8d7b1054c77d749503dd7a4b3ea4d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBJXP2243405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4da27703270a3dfedd218613bdf0fe5abc11f019ba639ce07a1e3d2a2a1d7b2. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GBJXP2344402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23b238e16ba9425ccf7b3397b48497d72d52ce8681674b5b92b2a41f9e257f0. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:45:45Z), 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/GBJXP2344407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e580046a07f22e905c0335a0be23e6cf586d313cad7e070b0ec1b94cc3bb63. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:24:12Z), 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/GBJXP2344401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43db72f143eb8632fbaa6e41ec59666e872b4b4b1635447dba2ef93a76a9a99. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBJXP2344410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de5b0ff4c608c91fda7641a7071c761d1e773aa72a4d078194422de68886e3c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBJXP2344411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3a3a88e8841d4377e1eb3a92fe930d7b7a39c5cd5916619559156238cc9ab1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBJXP2344415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0cc723034311dbcad726185cdc66435955d2d3d119471057f435b2e157649a. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/GBJXP2344403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2d7e69ba5205b55bb7596da0122972071ee117633c5f3b270d389de3e46b42. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GBJXP2344414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd632e551e6de588c3b8658e206d626953b1df344d5ff183d7b884d57e1963c56. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:33Z), 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/GBJXP2350810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bca9bb56a6573c3086ef3f63df5e5627248df4744ddcda27761593327097c3. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:32:48Z), 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/GBJXP2350805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aed3e4072ab247f50cef199e7a5a335eaa483ff89b1e2b897cb27b345db609. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/GBJXP2350807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b14b4c28d721b99a8f3f38dba00c88ad604e94fcc5df16fe0ec5d5b00cdc943. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GBJXP2350808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be75810ab8bef37386c766ddfd8bc32e2242b8fd659079c753fdf500c6d8d10. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBJXP2557005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce55efe7dcb648025904d9be92567218dca8429b17134ac1b24d3199a24da46. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBJXP2557002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce55efe7dcb648025904d9be92567218dca8429b17134ac1b24d3199a24da46. 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/GBJXP2557002.