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 0x7c70b85e5497439b53bf7566373e0c55ac780da6a77459b36d8370369b992659. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8998bbf-4b4f-44b4-a086-276c112e0b3e.json and https://artists.proofprofile.net/proofs/artist/c8998bbf-4b4f-44b4-a086-276c112e0b3e.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 0x1460652d22874b93a3ccc2277bfd6ebd69abd4bfc4f411a77a11bd5859d6a8e0. 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/ITO172240504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057596f2b6c00b26df44450d39187bd5cb44ce41d78018bc6b5496aa748978a2. 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/ITO172240505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab95386e91c7bb17fb0bb76c9ab2a5580d710e51397e2a490e088c7332c318c. 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/CH6542113147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea9d32e58c4bf76169673d153b76b4911ac7c565bef03413fcbce7af211c66c. 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/CH6542098613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2a6d907fe7cc1a20829023997e4398d8b8e89e14fe4d0b86b2bdf88f0ce1d6. 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/CH6542012848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f67d7871adac35ce8870c660ff215044a7e3a9fb61880529171636d2817679. 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/CH6541830733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf810311756c9ef9625a07fa2bb1a2f2144ee95cf9d217efcfdec5aedc1630b5d. 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/ITO171540095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e21a7e3681892c4fc88787c427dce80ae138a79794dcc496cce400b111e4952. 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/ITO172240514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060b627cf12e2d7ec99fd719773c9bf9b740a88313759070c1ca8db150ac368e. 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/ITO171740107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954ef914319fd5dacac6ddd96dc1831e6336aa0a4e1b1f6325cc348cb972b51c. 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/ITO171740101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887b0fa4d08c93be4fdb507bfbbffd6f2d5003b605d657b25fbae70ff78ae367. 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/ITO172240512.
You Are Citizens (D.D. Project Cut Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62863f142395b7093d6e63774a790273cf2c420f2c2197a623d345b305684062. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/ITO171740060.
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 0x2b60d59ee8a65811ccaed423b2f69ac304b0a192758213ed3005bb60722a5989. 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/ZA7YP2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f9196046cc1bb3fb32fafd090866463482aa4b0edf58ec94021c3826394708. 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/ZA7YP2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d7136cc4050c762d236531665ac5ea48fa987126200abfcba83d31ecea5764. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ZA7YP2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd372eed93311fae5ecda75b436e0aa2b58f88b47b1fdb8fc298673de906b86d9. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ZA7YP2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8243d215025f27f175ba9f37a9441106a96052eabfb613924e8a3c38d1f87bca. 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/ZA7YP2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd80c65f005fa2cf1c045aca5863233785899edc0e8669d4125e85a98c892af. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ZA7YP2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bad4937a312f65eea1fe0a777ca2049ca2e996d1b61a6a3d1ff90c4a294e8f. 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/ZA7YP2300015.
A Drawer Full of Deep House, Vol. 6 (24 Real House Tracks Compiled by Henri Kohn)
Nova Tales Pres. Tales of Deep House, Vol. 2