thumb|260px|View of the Ancient Agora of Athens in the foreground. The Temple of Hephaestus is to the left and the Stoa of Attalos to the right. The agora (; , romanized: , meaning "market" in Modern
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 0x9f9308ab7681453a096a4141ce1ea0f18cff6e70fc0562f75abdd1fb38483a8d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/019789f7-0e36-49f7-b977-44bc9ad4502f.json and https://artists.proofprofile.net/proofs/artist/019789f7-0e36-49f7-b977-44bc9ad4502f.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 0x6fdfd45bbc205822c61e52baaae489aabbc08dd31eed28e6c337de6bf92e3716. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/MX2660100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85aa50d1e6c942cd9b1dbde67622f8354ebd038b7c1db229f3fee2546b53f1e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:41:24Z), 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/MX2660100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec0e5aae2fd7d0d5a8bcd71e7479ceefe9fedf856bd632c7e3d7446278fe0be. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MX2660100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdfd45bbc205822c61e52baaae489aabbc08dd31eed28e6c337de6bf92e3716. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/MX2660100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e3e43f6ddf96ce9b139ecc4963d003370ab9de8fcd35d89c93beaf1561cc0d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MX2660100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85aa50d1e6c942cd9b1dbde67622f8354ebd038b7c1db229f3fee2546b53f1e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/MX2660100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec0e5aae2fd7d0d5a8bcd71e7479ceefe9fedf856bd632c7e3d7446278fe0be. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MX2660100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5704511ab8a21f08410177f1828dc33d9235120b6cc824138290ea3979494d8e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/MX2661100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0aaeefed8431a1d0f12168663c9ce01ddeb576c366fcbfee4f9a3a3caa305d. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/MX2661100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d235aa3acdd8515a8cd04ca3fc87edaf0701ac811748eb30fedf220e0fe7607. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/MX2661100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6930e76db0eac0188f448a7a666b41b859ea7744588e3028f383b986a4c4d2dd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MX2661100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5704511ab8a21f08410177f1828dc33d9235120b6cc824138290ea3979494d8e. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/MX2661100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0aaeefed8431a1d0f12168663c9ce01ddeb576c366fcbfee4f9a3a3caa305d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/MX2661100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d235aa3acdd8515a8cd04ca3fc87edaf0701ac811748eb30fedf220e0fe7607. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/MX2661100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6930e76db0eac0188f448a7a666b41b859ea7744588e3028f383b986a4c4d2dd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/MX2661100037.
Zona de Silencio (Remix) [Remaster 2017]
Una Sola Palabra (Remix) [Remaster 2017]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a42d11e7873fb7a4abf473a6c64943bc9a6882a7abd78d14f7dca36b129b258. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:08:02Z), 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/MX2661700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7dbfb7731f0d5802aef09d059ae2886d76fdcf71e08789aef95dcdcd800d08. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MX2661700064.
Una Sola Palabra (Remix) - Remaster 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a42d11e7873fb7a4abf473a6c64943bc9a6882a7abd78d14f7dca36b129b258. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/MX2661700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7dbfb7731f0d5802aef09d059ae2886d76fdcf71e08789aef95dcdcd800d08. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MX2661700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0dbd972db89cf388ba46995594781d8f11ec6b47b2f6921ef945dbf3fb971e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/MX2661700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263de8eafdb07848fa1e29ad74145b8d8cf34684e8df5dada696517240c6ebb4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/MX2662000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c874cc3354e5c36466c98df1f9b208113d11b33607b19bf69a6cecdd89c07ad. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MX2662000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb860fd5b1c0b2d993ab5a340b5ff6b13ac57450fc689168fdd5ac17142f438. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MX2662000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263de8eafdb07848fa1e29ad74145b8d8cf34684e8df5dada696517240c6ebb4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:13Z), 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/MX2662000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c874cc3354e5c36466c98df1f9b208113d11b33607b19bf69a6cecdd89c07ad. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/MX2662000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb860fd5b1c0b2d993ab5a340b5ff6b13ac57450fc689168fdd5ac17142f438. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MX2662000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c572f5cd73e7617b9c6b8ca02891c1814011c1404ee4af31ac8f3e5bdf9724. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/MX2662000073.
Joey Negro presents It's A Summer Groove Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b427aae009abf3c13b796e55ffed1e5d37adc7dda4bfbba0d70d962682264f. 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/GBPKF0600044.
Joey Negro Presents Can't Get High Without U
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d5d633488a0e9b76c56ffbc38a293b127e6b7f04b200a1fd00b59417cdbbf6. 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/GBPKF0600043.