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 0xf86be1116a2cabf97b46081f3e19e93ea5ec34c5e31e9ef0c1472b49c97e469e. 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/e195fabe-d3fb-45ee-a8bb-b3abc1d6eff2.json and https://artists.proofprofile.net/proofs/artist/e195fabe-d3fb-45ee-a8bb-b3abc1d6eff2.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 0x2e0bf256e720c2b333f6eeb923847a8a098307871635012e1539b4454fdcd2ae. 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/GX8KD2358642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9067d44f9929d3b8881427c749532b498f1c5e193f04d92d4e283bb955177eaf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX8KD2364724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f0ae0b6b81e35ecf2f0a79c1fc7f63f5bd2b170c350ff52a987c99859e53f6. 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/GX8KD2336828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abc214bbf697300eb0e468593bda79909fe5dec779ba550312a5ca4e56bae0f. 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/GX8KD2352311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ff02045eda07ac0a71c139214a1103e5cd31e79561fb6817b89ae7a2ba1780. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/GX8KD2399564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c460ebe96383f37b841305cb29dfe8ee3faee319e596ea6e0073402fc4c76ef. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX8KD2307846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a867af70a148220d72f954bcc72f552a462c766e0c0d2ddc6285886ec2115e3. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:38:31Z), 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/GX8KD2321801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7836cac2b602cd9fe9182f13f3c5d59db3bf0ee81496594f02fdc38851797d01. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:59:35Z), 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/GX8KD2333579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf477f24d983cc12d24fb5f44054ca6f068745a34801dda4a11e6bac87c8824d. 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/GX8KD2387336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be465353e68e6fb80d9414d4825e78dc154477dd9341dac38221b099c6c2db2. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GX8KD2358964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d51881575b7777293ac2a933086951633b8618d1754563229d364ae75e5f012. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUMEV2362848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a76a344357842ea771a45b245427498394466ea600c3581cd5057e406577b3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUMEV2362850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c0a26b09dfd29c5d2e24fdeee8d1c8670ab999d5cfbed664bff107579f937b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:07:46Z), 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/AUMEV2362853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a2fc5a80a9b32fea75c507ef844bb5ebe5dbacfec152071a1c240282ae3c70. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUMEV2362854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3036bc8c1ecf830a081646bee02bd12c0dc6745fe09ae3fccb4c3c099ab4b537. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUMEV2362855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b0a493f0799c7876e82acb0ff5eeaa9b242eea7af8f6591017762fbfcc8e3c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/AUMEV2362856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb8c6a9254dd350d3ff6d6f69db2578ea9cd00754072b4181b4f237cb6213c2. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/AUMEV2362857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3da00252756ad05d537fd307edac7e5773271c82684bf6e098f5bed654ac0c0. 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/AUMEV2362858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a30b8c49b730c5e917afe10ce7dc3b0c673899593ccaeef17635da09fcf021. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:33:41Z), 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/AUMEV2362859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd24398de6c4cf6004c3135ba4b4834ef6de82820d49d7ea5529fcb07dde412. 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/AUMEV2411477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd2591c31234d8ee0c0041be96a3388050b0d4e7c5dde74dd8714aaf09c7562. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/AUMEV2411482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc3d95623b36b5135691d6d23efdd1709e580d4c84f237d30dc3b279a6c7cf6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMEV2411476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda93da874b562df0f9256c8ab93ff976138a9fccdc81f997efb5333f83d4f26b. 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/AUMEV2411478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686e5898d2078f94637133d3ec697d59ace40830735126c640cf995390fc0613. 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/AUMEV2411486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa69d168d61126c606f3b7b912573b44ae1538c7e13b0beba5b31cf48e458c7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/AUMEV2411480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc5f85b7a9ed32cd67e19c63cbfafe336f44422621a9d1c2fcd46a6c6dc9d36. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUMEV2411484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43f4885e26823d1c2f7dc4968a2f4b109cbac318dd0d21d5426e02481042f3b. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/AUMEV2411481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b90495bdedbe7266e5d365c886bca0d29025564c0f4f0240b426b41fe1f999. 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/AUGBT2427733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072e1e300fb0112e45d56ef353f1f871e714d58d7b7efdd33de2322c6dcc7afc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUGBT2427735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29c0fe039aa50c51b8160e9c87110867b04fec34d35266aba821331678da475. 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/AUGBT2427737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0bcaac703f1a081adb4ef3577ce7020b54f15f8b8ec8fddd6d5e026fbba4fa. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/AUGBT2427738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bf0462dddbefcd85b063566e558090fe2adfdc3c28e7e1fa59fb9bee77a48d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/AUGBT2427739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda71992429a70ef9745713cc5ebd097e45bcd3c0f4b13729f8124201a76cf25. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUGBT2427741.