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 0xfe034dc4c043cd52cb0f1029197ee7a9f70967caee761460cd5707d4c539d1a8. Chain 2 (Bitcoin): anchored in block 953933 (2026-06-16T11:13:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f3fdce3-f311-4d1c-8b80-aa94e8d7de37.json and https://artists.proofprofile.net/proofs/artist/1f3fdce3-f311-4d1c-8b80-aa94e8d7de37.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 0xd31f6dfa358e2375be06f30e6d04ee3e08f059a150553b5fcd023e670ca0eff7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBBTV0901251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9714e79d0f16bd2bacde42ba557e7481767f7ef52618f046d15c459c8d27132d. 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/GBBTV0800956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818064f9cdafcbc8bb2b28957bbca59b2772b1f2937ebe0eb2ac3853b6eabb23. 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/GBBTV1001286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c2bc17721f19a1469dd010618883e695091f0119b6080ac815531c7b401efa. 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/GBBTV0901171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9dfabf9ee6fe628b447ee0b286ec4fb3c2f3786bf1be9d6c826d6c8613de9a. 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/GBBTV9500155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53d5c0eca547724b089cf8499735f1a577e38d064fd4df312bcfab28d121879. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBBTV0700754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb532f8dad4df3cba733f69d81f5a5c0538532721c54377e8e89ebaf3a1cf56d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBBTV0700753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db05391db0b620c0aa82a33a775489cea6872331ef826358f4418dc46bd5be8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBBTV0800941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea8a2578347fca5d0270c1cda01cc7771c7ad6b9f6cd77331425f9a6873fd00. 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/GBBTV1001287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde72ee6a18dbf62a62b5dd9db616786e821d5d1c663eb3a5c63591344f4fac1. 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/GBBTV0901097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6a3ebecd532a4bd4e2a07e8febf6c69dffc3001730c5e3c50ce5f045daede0. 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/GBBTV1001288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f75c13c991d5dba23dad123d53b43ddf19e476c42de82493cf1fe81e3f242b. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBBTV9000546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed740a3d32e5364a11b483e1e0cf0f5da9929f758075749c45ec1ba7520f719. 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/GBBTV0800900.
Totally Wired: A Collection From Acid Jazz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99472fdb5501d9567dd6bc3641cc39567ace9bd6afdb387d22a6ff43b9d34c2. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBBTV1502308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf94177c4316ab77aed5d49501c9d6172202ac0dc2289f8cf707704834d77c8. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/GBBTV1802602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18515b1f5e558cbaf1bae16b6e43dd4ab65fa56103ad534520f1fb3410af6157. 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/GBBTV1802575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76eb2ef99b6768a96680a2b6169f8be8bba3f1680f7fc7f9fdf69a26d9f72c87. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBBTV1802576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b788aca1f7c8e15147d7598ec6bd4d22b103b5ec2aa98a0dbc7468dbdeed6d. 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/GBZ5A1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4c5bbc885d0e183a1cf3d21ca680b3852c1c0a79e4dde058442af5839b4e8d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBBTV1802578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729b826bfa274c29a11ad16295add730e62a54740a88629a354c74160d5b00a1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBBTV1802579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca7ffe81cf3bdaf95e2705b26c302a4d593a30ca3c46d026b6ea7f390ca8fe9. 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/GBBTV1101482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc85aeafc6d5c9a81d42a96347177ae086169b4fafa14706d7f75ef55cb5031. 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/GBBTV1802582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea24a5832205080d3c05b3d86b1ab10d677708c07fea1f22a42add3a9709f74. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBBTV1802583.