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 0x651085faf56f7fdb490c65df9767dbd2b78a6d545cc87ab382bfbe9f5f0783a1. 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/52989c3f-5c15-4dc1-b92d-bbece6b9a8b3.json and https://artists.proofprofile.net/proofs/artist/52989c3f-5c15-4dc1-b92d-bbece6b9a8b3.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 0xe69bd0b47646992809548a41a97784fa5ebafb37a1f4282d929df8392c026b2b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DEU241500805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b193a2143cb6913cf274e6e19fd4654af992e8c1961d934e46f471e34aa20f3. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:27:20Z), 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/DEU241500807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa356586ae8d0376c97e02c0fd4253bbecaa204b6ca47c1196141f341b2d580b8. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEU241500808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a18f09fd6c20b1153e7d076ae05162a79910d5cbe029dff236f05ceac83193f. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DEU241500812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71731f600382993e62fd01f5fa4acfc351cf04e25e79fcb400fca469c235d307. 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/DEU241500813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7ba9b5e7ab7070b86292067e1b6a686a2597639a432e03f9f020780aaca954. 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/DEU241500814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b512f1436d3fb4002dd10b06f251e37cb6b2ec191e185ee29fee1d8d14f575. 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/ATG481201006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21f348a8e08282dd63414cdd8a60f919b2787b526f71e54f782a9eeae42f6c9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:05:56Z), 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/ATG481201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52afdc1acf0c0305da3e7e662e1fd6ae7c96fc51f6dd97e7c97f761a705c72b8. 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/ATG481201012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1ec13e7751ebe5c478f4376d12855d97c98476e5eec9938927af7bc1413f25. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/ATG481201016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5609e638a136e52defa8195d5f26c1fb54e4ea6d4f6120ff440b17db4ff0a4a7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:26Z), 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/ATG481401004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633405c8597bf7cbcf4f8fff5378d5e2c5d26279279a740dd83d9712ab218431. 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/ATG481401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e23d8bacf1cc0bca5b8bd4979199b3895efec98a32c5958b28bb981be48f9e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ATG481401007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103ff853cb1fd884141c65e04876c56bf9542f1a81ea7e22a180a299ebdd349a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:41Z), 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/ATG481401013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665d746cd3a14a9a511df84f7855f62996650981aca776221e615b589ec5b794. 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/DEU241408938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fed76114c3e146df756901a85576369364da00945afef108ca24a6f7966cff. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/ATG481601002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffafff2a592f07ca1dd3482238a6d947d322126660044172adac551a3908448. 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/ATG481601003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94b4241145790cbafe2ed4f7e026f73e6c214491b422cf2431c85116e518ab1. 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/ATG481601005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97c2d3e982b4438c47fae802cd530d2969855441de1e1c6fee409a810d97674. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:25Z), 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/ATG481601012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ce3c3575b732eac9db8ac653c6e4f0e25fcdfb755c52edff5250d79e34d2e8. 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/ATG481701014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf150e63052aa00dd273ba53817afc52ab41041117a7676da7b63fce6768ac7e6. 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/ATG482001001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38322e5a9c20122b4b15ac13f9ea3124d4e99dc9cd7def36ce0b58c1408d94b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ATG482001002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c68b96758717f1961b7f4fa37e56bddc8c8933014498d46a6c3cc7b617e158d. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/ATG482001003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3777641e65d14f2b30c149c7fa18c160f22f0012a5b9ea393920152b3c650c4c. 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/ATG482001004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8dc7ca7bcf907fb008cac4a1b6c6edde01a1c12cc88a823f6f21560b496ffa. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/ATG482001009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6018f3c1ca4b85b2ccf82fdbcc5b5eed2a48db6cb87b83406af9dbbcc3e17ff. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ATG482500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a8df0e9f76e51e87b23a97838601adda74baa33b317cd971e8baf6116a6150. 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/ATG482500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2153a54fd32955d54d6b326d894c2bc05bc7ca6ddb6015d3bd410ee883655e. 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/ATG482500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5bed38cd8962c56fc4482edfca90452b03ffe3bd435751053d53f720803495. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/ATG482500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4565573e976f91fad15c2a64fb8afd8246fc7e463e2afa60735c61924621def. 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/ATG482500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ac2d4900975ece4f4406fffe80f5de06e3fc1115b7385801198cddd7cf4d30. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ATG482500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2cb10a6f9ebcae6300660b72edb475e4f22953e3120b5d87a9703af6996350. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ATG482500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a671ca3c83fc8538a551bcd902222de1995a71c3a064a6af130611de7229be. 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/ATG482500111.