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 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 0xbbd708d4aa735f111041c89dda482887676b8452bc56b77b60750ce6548b6295. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37d30f03-ca72-43bc-ad31-5ad46509eccc.json and https://artists.proofprofile.net/proofs/artist/37d30f03-ca72-43bc-ad31-5ad46509eccc.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 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 0xbf8fb3201333b8e2ec10537a3af3f871cdd35a05a807e56c30c471e49494766b. 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/USDY41949778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f76befec6466ed4b0ce731ed8cedc3e6bfc113c4126594013110b9d93d5b2c. 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/USDY41949782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab9727d09f7170ec8210d9efff7f255989de19283644bee1007fb98c6b0179a. 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/USDY41949786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7649632ecf295866b089a5e608a1b4fda0026ce2badac01eeb698f6fe25c9d80. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USDY41949787.
Que Orgullo Que Siento del Padre Que Tuve (Vals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eb0934838692bdf7bba3f21585375ef0e0cd2b5ad583e7e3295fe7ce62cb2f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USDY41942020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd237efd133161d4d894e52ec93c57e78f5cf3714c8443129d480d7ce59bbdf19. 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/USDY41942021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081634023531f9be8b1e09597737228ee4bc0b9a10c15654693bf551937b134c. 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/USDY41942022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbe4b39a8c2d94a1d0f5f6c0ae54d4aee30a9539db0db511043de890a71a4cf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDY41942023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357cc0f7f119c94c590938b46f75debad19a48758670556a731153623b1de7de. 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/USDY41942024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8044a12be76b0fa16a09bc6827f10881f461f6774b759682cff8e4cabc0406fd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDY41942025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf231984226b163ca105e7b08eec2bb4da5f8135fdf3c1800df7a2603fd69b65. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/USDY41942026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722e179a22435d1f747bf04a2624a165319b1be640e9fdaa385e98949516c001. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USDY41942028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0436da6c87c8d54de9603b6d3d1a9c156d7b2ec9c2d884d0f2bb3477d75ec19f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDY41942030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb308df7700e7c3df136e8236c1b8e26c85c068c69bb59ae11fd99c09a9b04a44. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM91800376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b90b99b19f879708aed29774c415296aad33f8d869fc70af68ee552e6f3acc3. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USHM91800377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ced2d622a25df0080d4d5ed853773186343dc943ab557bb6c650c89388a9e5. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USHM91800378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d3a10a193761f6aa09ae74902e79ecf826d3c5a31d8ce47ec3aec7c6e1a115. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/USHM91800379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9533d54384eac07ecb2b54a3654df22985c9fa1ae66394ffeab688e55c9cee. 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/USHM91800381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db03eb831db61816311036e980afb8c3be8393ace04d6149091f8742ae2dd3d. 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/USHM91800382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f08d2e452726f8f4a24516865800620d1b357396c9e6909e393361bddc3e381. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USHM91800383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797a50d0637844e8c04f1ca230233d319c1684f0ae8276610fb3e8ef34d298bb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM91800384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46323011c953e0e1d43d36a1ff81dac59e5b099810cf78b9763851ee3feb63d. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USHM91800385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe938a54b0cd406db15bd3cca01111e716d88ef9f53c8a871bb3084ef0026bd24. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USHM91800386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef3a26c80974e1ec731627cb735b5053cc7c24360511192076c629fda57c90b. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USHM91800333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c30cc1ebb39626e43538fba90a749e38caf418300e95ead05fc2b97857425e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM91800335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45dc043d2ded382b9557b4b904da9b144e7045ad912a331381223a74545dd33. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM91800336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2004564fd540b221f22b9eb11ef105dd0d9107ad62cc9654642fdc082a8a937e. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USHM91800337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13646bdad3ee16806e3457f1ad6903ce29ddd63ca98b51e335ca08a849b053fd. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/USHM91800340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226cd26e1fcfaa58be9bc76761cc7ad8b993004246b7a26ec1e82b892b6b6f75. 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/USHM91800341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd303affe0bc6b9282de68c536a3049b0063a525716ae623de671c4b56a692e6f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM91800342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4208d9c2988566ecaed882adf60254158e2106a3c1293b0ed3f9cfc2b79fe0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USHM91800343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd226cb26d4d3e88c7d490d949e1432cb92bd893966bb990c1aa28a55828b9afb. 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/USHM91800345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf674da751caccf7219cddc606b12acbc53b07c1ab6cdc5fa7a54e16249d091e7. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ARTYO1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef66db739eea463ac62f845b97f805a8990a1a061b925536087c55251b2656af. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARTYO1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79bb537f6169c1ca6b6b80595d56ee44be0aad307c8d108869f167e3f0c5358. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/ARTYO1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac24bca6f9ba607599fb9c95bf4b43d045cc30518d17d9f6349fe98812673cc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARTYO1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f072b37143aaa8af5f4279608fad4a688b165e72cf9f1cf9e8b5a0d72841b46. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ARTYO1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35189f9a8a12763120b853507c8058fcecf244df32781d993a70c946f8421c87. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ARX459400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efb61529f876388a6b9c26d96282aece5092a52df509d6980d32a7b56689d72. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARX459600039.