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 0xef75ace2ca673fa8f799f646ce642cb67a2be4d76d540b39c2196cbce1db290f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/418c8791-0fcc-45f9-a332-7d3941681021.json and https://artists.proofprofile.net/proofs/artist/418c8791-0fcc-45f9-a332-7d3941681021.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 0x5733f0c14a97c0908d0e99bc7ac4f7f24a4caa5536a8992cb7de3d792e82e46b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USDY42560797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81037e6c79914e9e0aa6603182ddf8ac93a35a22fabad925b5566849b0e1298. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USDY42560798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cca42d35377081aa365f540b86cc96059816b04657643128dc6b0c87cad60c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:47:47Z), 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/USDY42560799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa17fc678b92f820c907693ca509e63eb1511f88bde45db137d20efd954fdd65. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:09Z), 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/USDY42560800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bdcbc9c7d0bba24d2186079e2e2fa1bbd2ea1d0cc47577200e20ea385c691d. 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/USDY42560801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8772e1b4807f9cc96ffea760bbd925a5d083f8e0eb79899ffc297026bab7fb. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USDY42560802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599bb3a4ed9cb731eee4b65723098243391a876bff8f42a75ee4a012cfcb2eaa. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USDY42560803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd983c72281d524e1d0c783fe4d617741462bb1fc989617ad52f9d5dea8d7b1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USDY42560804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92002723351a5eff82259daff1d351c37752f3df364a84c64ae73b9831cd473b. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USDY42560805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad09e13c500cf27e7a3e539080151eebc5cafa0b4ab0c08d0a8d90fc8f9976d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:37:27Z), 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/USDY42560806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f94020d91805c2fba773506a2792849e98e8c18f484cc5b61d0a92f408a43b. 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/USDY42560807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5ef9b50f51382da4c8e843c3428ec5b026dd3514193c8eadc7112fb4c0848f. 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/USDY42560808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119592135d11ebcf3d045a5ab77a3441b7b3f9006c1f1c614827a5eeeb256b98. 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/USDY42560810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc725204a038e46699963c2cd8ccda2846582937bfe88173a918b65033a17326c. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USDY42560811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eff8840ffac284694595f77d18c2f099d333b996ba65957e09d0ce0a543b477. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/USDY42560812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691e62f269298f65cc761763fe4cc729819b707fdac43ec3185e7e5eff3c276f. 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/USDY42560813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd9c75045f13b8ae23fca3ffeca17537dcf48e00fec80b9363b1c7ae5624b9f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USDY42560814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b88d07c2d8ce014291467fcf3d1e532786d7a57264e401ba45866ba7097d88e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USDY42560815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4733b77046a2420f6d1cd7033f68fc2da557cefbbc28af0f11a0966aa9fee457. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USDY42560816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8901d5f2cd1cb87f0967a448f9d35ffcb697a22caaf50c5ed856178fc65229b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:34:18Z), 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/USDY42560817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb394421e24d721a2f2c7ad01c28f60beba0c4e5b9d1dccc1b41556f338de5a. 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/USDY42560818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011f325939458120173f55aab91b9e6f5a9bfb05b65e98c0a48e8b13e11a42a1. 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/USDY42560819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e21d1554b55c7f774c2938a663f966cb8bf5b0484ec9a8ef2e25988130452b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:07Z), 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/USDY42560820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a2704d55fa21f5ebf69f98467ef9a53380f03da58c5765daa7bbd865c5e99c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:57:46Z), 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/USDY42560821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0609d4cbd7f9c86cf058c34f8f5c7c4a2784a3ee8f2749a13f054058043023bf. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USDY42560822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e829293f3d636641ff2c55381d8c405a1a2454364ce006da8e3e7314d91d175. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USDY42560823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb756549d07ce663647f793f87f8884ca23c00d681e1ab4f91b089add960f6d. 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/USDY42560824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45570aefda08dd0a7045b59832c81a91f6a54c7ffd7b7da2c7eff20ccecc9f9a. 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/USDY42560826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2a8c741953e86358bc3565891590ccbf87bfd79ed88868b80c0f58fdaad8e5. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USDY42560837.