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 0x8e07b67cbb74814bae77a0d7d0f564e5e28bb5d0c732a9d7e646eec4cd057d07. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5b35d79-606e-40b5-97d3-b0d496f7bd00.json and https://artists.proofprofile.net/proofs/artist/c5b35d79-606e-40b5-97d3-b0d496f7bd00.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 0x8a0232e960145e25063bb43d496c82b8db42b794971c362522f73e9858775bfb. 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/USHM82470506.
Into Light: Poems by M. D. Friedman, Studio Favorites
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6461bf84fecb5966b6d1b6ff9ec977d64126e1a955dbac3dfa9ffd583df86e6. 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/USCGH2352893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d24237346f5bea84bc843c2d4b07003cc73f440248bc3d9f36f15091018c76f. 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/USCGH2352900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cfd5bfe6da015065af85ccc8fddae425393513594846d0239a7ac733a2193b. 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/USCGH2251957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd3ec0e922d806b1dd324f630b4205b0172dd6e9a93f3aa8dc4dc916f388277. 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/USCGH2251961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399cb20ed73d37216d5c34e7c2970cb1e0cba36085cc97f2df7ff1bc4429c03b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USCGH2251969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac5cf8b1e0c11873e81d5c138484c175578861479df5a5c59f837ba16cca330. 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/USCGH2251972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa862ddfa93af7a9caa3d4f77e773cbd8d28d3b6b227ce126d539ffaf7de62b17. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USCGH2251958.
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 0x02b5366a964cb564e73a4d84939e0fb6c7941b236c553887acf5d8e1d9799067. 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/USHM82149576.
She Has a Mortgage on My Body and a Lien on My Soul
At the Bar Double L (Ass Squeezing Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb542c2cd4c8d382230c54890ac973a857b323c823955730750c9b5de96770d6. 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/GBWUL2430584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6534512a43cfe9ff12993c30fe65a023ec747245848075dbbb9d7c96e291d4. 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/QZTV32445264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7301cd118d715a645d581888f65da5039b0f302cd50dee01da93e98be729ad98. 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/QZTV32445213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54f7cd75fd4786094a26b11900df40a7403aaa9e9a4ef31355b304711c54cff. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDD2432632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed6d5397785ccece9970158d5103c0f5475db8acd4d1ae6d879ca6408674bf5. 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/QZWDD2432836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf884690aa9cba2a3a7597e823706136e40b5746a2ffdc00610e6da667646fc2d. 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/QZWDD2433066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70429b590293c5ed98300b7faea86f21e2a4e31b2d26998c9a60c0daeb974c6e. 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/QZWDD2433216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31f6962f38066d872e9dcb8541f550229adc84ec5e3afaecc472705b4e5bbbd. 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/QZWDD2433294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0831eb49c9aeb28c8165779b844d064d597cf0cd0b0187e813b84fbc5af6dae. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:53:31Z), 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/QM9A92080405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287a2f90b423926c598e705c89ffb2aae27afe4d58a73e94400dc2053261b985. 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/QM9A92080409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c7a62666287dd99ca847040b479b6af8668b99883a380a3fcf27f4b5aff559. 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/QM9A92080410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2225d93de319db4fb898d77f951cd8eb1a5bb9c217081db434c808becf22b95. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM9A92080411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5445fa771ede558dd39467073a056d0e2e148da61589982d35d38bcd17e43c70. 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/QM9A92080413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd5bcc49cd4353e895530159b4b4d63048f7a1771e15145ea3486aecbc9284b. 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/QM9A92080414.