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 0x7e22d4e2bea971bd6c69b9777b790ef905ed29ddcc2c0fe495f104396cdff452. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db59d0a9-7dab-4bbd-be74-384c6616367a.json and https://artists.proofprofile.net/proofs/artist/db59d0a9-7dab-4bbd-be74-384c6616367a.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 0x07a8175496fad21867d8ad0fb236fa9a7587c559dcd7c4bc4416ba43c3060985. 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/UKB921180001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9714e79d0f16bd2bacde42ba557e7481767f7ef52618f046d15c459c8d27132d. 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/GBBTV0800956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818064f9cdafcbc8bb2b28957bbca59b2772b1f2937ebe0eb2ac3853b6eabb23. 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/GBBTV1001286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c2bc17721f19a1469dd010618883e695091f0119b6080ac815531c7b401efa. 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/GBBTV0901171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9dfabf9ee6fe628b447ee0b286ec4fb3c2f3786bf1be9d6c826d6c8613de9a. 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/GBBTV9500155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea8a2578347fca5d0270c1cda01cc7771c7ad6b9f6cd77331425f9a6873fd00. 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/GBBTV1001287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde72ee6a18dbf62a62b5dd9db616786e821d5d1c663eb3a5c63591344f4fac1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBBTV0901097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6a3ebecd532a4bd4e2a07e8febf6c69dffc3001730c5e3c50ce5f045daede0. 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/GBBTV1001288.
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 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 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 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 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/GBBTV1802582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422327f26b00a6236e3aadfc4adbff15319ae2e7c19209ad6d8f28edc7f63d76. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBBTV1301729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd394ddc9cec174f6ce56cca16d3c3c2205903e0b832f4e682cd21e5d5e817960. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBBTV1502238.
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