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 0xff7c3d643808715db3626a3ee22523122caeab0f3ac1efbee2072e9b6d110604. 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/7a7bf582-41f3-4e6b-8a3a-c6cfa5158dc4.json and https://artists.proofprofile.net/proofs/artist/7a7bf582-41f3-4e6b-8a3a-c6cfa5158dc4.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 0x8620ed8f7e3d2f5338d09e26c82a87a762e2e3caaf55cab664477e8464264678. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:05:39Z), 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/GB0421400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7377ee4fb3cc55a7c980eb4511ed01082f0b497640a56f188ad26f6260b7ab. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GB0421400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec34cbed9e969103e56ff3fb00ad0f4639bdd87dfeca2c6975ee7d021e1ed94. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/GB0421400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df1aafadcb8ce5e55ed1de49aa91242ee282f9ffd6e6c32d48ddf028562efe4. 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/UKSP41900176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb18a68fff1d896ac1b72a2695091465c92e3083716f2c8ac50af1ce0f6cde8e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/UKSP41900177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090bf4ca1d14ec0fb11fcf10fc3f863314592d2bb231e8311899ba16cef04772. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBJX32264705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf94fb76715b8acd28d1d6f5c28273de2f1f3951fe97a05892c19eb4558c90c4. 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/GBJX32264729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6f3a4a907bb07b7ab1eb2e67be770ed41bf0d4de0aa5f5ab94cf8525f1aad6. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEY032202512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901ef95fecbce1e995697f6e1d7cd8b3a71eae24745d2deae877b77d3737a0ad. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DEY032202513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476d6e2515652c1ae36602426b3a25fde25563ace4db8812f80055d49906bd35. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QMDA72321054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935bc42d8aad6e66a9a7cf4757373af05fc9054b7fe57f83155add53b91cc09e. 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/GBEPM2402055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f76f1065dd74125814f1f1aa766e65a231843a48c63a8601deec1b9d73cf44. 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/GBEPM2402056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fc18660aa9ae39a953d8bb5aae9a82d3a372bd66f3080a91fe2f60b8cbf276. 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/GBEPM2402057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906487a5648a2a8701407d6e6b28d84f73434b2c75041cf06b5698eee8326b2a. 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/GBEWA2404056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5263c1155e7491c7f2504b0c25167ea361f23115eb1ac61d808b85382e604e79. 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/DEY032402789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beee232f904401c4adfcffa065b94a4d10dfe54d1e7aa3a1306783100ad2379. 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/GBJX32264728.
Balance Presents Sudbeat (Mixed Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bd643b7acc65013021fe8e4aafa1f8c4aa6bf88cb276ff83d465dbdad51e73. 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/AUXN21726370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6178e22ec6f9f1be2c4c658a920205af6a769d74f641583887960e558d254743. 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/AUXN21703989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2307c9827c3427120c471f3d1ac5838ac92dd56a03401eaa9fab8371e12d4ff5. 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/AUXN21422347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21418a05723aff1dbd86610a6efa8543967173635cf86682f5ba8604f161340f. 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/GBEWA2404038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906487a5648a2a8701407d6e6b28d84f73434b2c75041cf06b5698eee8326b2a. 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/GBEWA2404056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d173f3a6e93e5ac76969842e7528eeef73a70fdf07ab24dce9eb0e045ccc362. 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/GBJX36116133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d12a63577b39655765857c6447389c9bdd463120f4c5d46f12a70adb9c8ae0d. 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/GBLV62400730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833cb6bbd01983cfc4b28359202f587c3cd53ec8ffe48d6a905307aadb09967c. 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/UKSP42100086.