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 0x8a894dcc40d1942cf1f014983aa1906cba6c6ed4a0cc604acddaa6eb0f86251a. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9763771a-46b6-4207-96f7-04e6a1599b8f.json and https://artists.proofprofile.net/proofs/artist/9763771a-46b6-4207-96f7-04e6a1599b8f.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 0x442e2e8aa3d21d6279d22f4ade408afc77131bda9d9e9e909fcd37f8851b9d9c. 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/US83Z2142292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2326f2355fb192b85c3c4985279258da23cb26b7f47ab272ccad66c925a9dd64. 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/UKACT2031540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ebf14b76e365badf10be9967fee051ca1ea317b30196edbb0da79fd37d1229. 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/UKACT2031541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3b75dd2bc26aa1a7d6dbb224744d222bbb0b6275cce07bdd61b40690475dcb. 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/UKACT2031542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e44f11b16efadbdfd1f5024630ff2fbfe89db8ca54a54477ea177ab802c07c. 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/US83Z2042844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363a5222de6905c39c18df3e80d34a628c2ea9d7eabe145ec6c3590f4536f632. 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/US83Z2042845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150970c0c0b569ded3a2565d280082ade29fdf1fa3863de0d5feff5b58acf694. 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/US83Z2310925.
Rave to Me - Moo Moonster & Parissior Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a35c6c4413fb14ffb7cbe4453a6cc6daba4f1eeed85457d3d15e419d54338b8. 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/US83Z2310929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bd478850a2fadb65d334174ee82f82705d1eb83c7d52ae62450f5cc2cd71df. 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/US83Z2302359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67b5cdff4ac9a98c03cab9c6a31dd9c06dff586ed9bf41199bb474830e2c03c. 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/US83Z2225046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26f1ab58ee021dba4fd5d0505731b7b106d4f99e2c6cb1813c008c0b8ecf7d3. 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/GBLV61924545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccb48d20f5dba39d36e44cd6b58e23d2dc25b4c6695d5b79720efe07a26dec0. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBLFP1900406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4ce31315003a7635f84bab4410daa3b1cf990c5044f0fb743115df32966971. 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/GBLFP1900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4b04f5031e7f131da360baf7f0fda5cadc51ecc52ecac2bfd7c6cc3a8ed73d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBLFP1900409.
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 0x989534d7ecc09e6a505e5c148fbbd98e2e5328e534b005c47e1f85a05e8cae97. 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/QMBZ91635672.
Dance to the Groove - Pete Herbert Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ff4f71bc7cd4fb2529ffde72b66baff86e3584309800d4c0fb7b333050ecb9. 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/QMBZ91635674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96624d20f7c7435b9f73239c35c906e3973c7bdc9591faf50d7788addcb33b66. 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/QM7281745472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cfbf1b62dfe990d490d87483465350f2cebdba447133a1d3404bd7f251e915. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US83Z2499452.