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 0xae8b729fea8ecbca2777d113d1506315a62871641e816ddf7eaf160683c37832. 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/6de498de-c8b0-436b-a91a-fa05e658b151.json and https://artists.proofprofile.net/proofs/artist/6de498de-c8b0-436b-a91a-fa05e658b151.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 0x1db58268100e77c50027132f6ef2762df1f278d35628d0076fa3b7487c531a02. 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/DELV41501287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fe587f2eb6b082fdb17ad5236e029393f7bc67d504aa11d1999f8d94b6ed62. 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/DELV41501288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc784020485434a4185bfa2e42aa74d9713e45863a7dad91e640f435a1b4431c9. 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/DELV41501289.
Leavin' Las Vegas (feat. Der Klan) ( Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42fd686e8cb718f6fa4a2260d313ad99f1b8287df3447d6fe2c06be09858319. 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/DELV41501290.
Ladykiller (feat. Aylah) ( Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddb2183429927a0d9b7b26e551d7daebb2dc87361dbea039ac1fa04b9b3ab15. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DELV41501291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fca10986a66a003087fc1f458bcf0c9640fd90687566507a566b80aa18c1ae0. 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/DELV41501292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9209568a66232d5ca3606ef8d01632b5b9aafa5928a897e07bbbd6f85316bf5d. 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/DELV41501293.
Seance (feat. The Arsonists, Shabazz The Disciple & Stieber Twins) ( Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacdae4af4e5e8c61ec2aa80f7255668b6dca36bef1ad65903a290f1dd3cff4a. 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/DELV41501294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6413be05135baa133b38c8d1518af9143df9c10f589aebd5e46197dfc7bdb11e. 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/DELV41501295.
Kaspaklatsche (feat. Der Klan) ( Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1153de0fcb883567b67db546db7e567ee45cea928aa861c5bf8d702519288095. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DELV41501296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed54aec6863db5e620c9efd2556bfbb7e6120813027625cacd90035352da646. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DELV41501297.
Auf uns ist Verlass (feat. Tone) (Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1957b0cdd11fd30b905ee9f583c87cc92b9913c8853252d8eafc45adac4a3f7. 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/DELV41501298.
Licht und Schatten (feat. J-Luv) ( Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec37164f6a20a72deaf9cd1e2cb0b7ab3c69e02459473edfcd19747344770ea. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DELV41501299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfe8147f2bbcaddc9cce48806e55d7d62740266fda2587d2baa641510f10611. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DELV41501300.
Sufis (feat. Square One) ( Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155bf031f62abf41f949d00502dd08a29b0b51fba1d4ba494641e3797743ac4b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DELV41501301.
Was ist (Square One Remix) ( Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac45c7f9e0dc8bda0522622bab30efdcd614e9d1607b2511ade0b24e47c33fa8. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DELV41501302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025c04ae0c3d7dc73cfff65da383483893c4232075374cd77c68ad769b107d08. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DELV41501303.
Doppeltes Risiko (feat. Stieber Twins) ( Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84373024c1a8a8687af26e980390021698ea51a5f6fbc31e21ec1a5954f2a9d. 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/DELV41501304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434c62cb58a9fd66475d4389802b34dacbe30d42bab72bedcefb1f31b6e1eef2. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/DELV41501305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d55b912074a5c530ce7219173195178cf746286fcde5b649623994cfb878a12. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DELV41501306.
Erfolg (Lord Scan RMX) ( Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0507ffddcffe0f1e4de468dd57c177f5dff77ba74360dfda7125a928be81cce8. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DELV41501307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c06aefaec97d94517f3ea81be2d4654539497c9f8293f9816f14c33ba2a23d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEZC62179199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da1fba87f454fed006b6344414824d2da09e064fba86217283362473ed7bb9f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEZC62179200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4f31d5ae57769767176bd7865a0d56d1b95ac518c75d8e6123f3807e7b23e7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEZC62179202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4cb4446ece2dd51e8402b95810e302fd128d471d50a94d59d43ca3c280467d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEZC62179203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b57360cc17773d9f57a9cff32ddd25a18c5d3696ef8d263d5b292512df70b5. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEZC62179204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47406e4ae33ace678f2ea8ec92a6a322f56c6056d9cf8fefa81bab792d774f55. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEZC62179206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072181cf2c9fbd86d6f06a483dd56de1ca799db7f746e754918f42cbfbdc820f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62179207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d01e17667eced83120c235c808ff4ce8e983c097d1936b8d3b401bf8345548. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62179211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d92013644ecad1096ba3283a7437ff9eca81bbe9fd3cf65453df9f3b9cdb7f. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DEZC62179212.