thumb|Suidakra live in 2017 thumb|Drummer Lars Wehner performing in 2015 Suidakra (stylized SuidAkrA) is a German melodic death metal band from Düsseldorf, Germany. During their thirty-year career, t
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 0x2b4b553053c559c5e89ce3f6aa99bd0122970e16c98b2c97060add011ea4ecc0. 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/672bdbed-29e3-4d5c-bece-67f6024d443b.json and https://artists.proofprofile.net/proofs/artist/672bdbed-29e3-4d5c-bece-67f6024d443b.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 0x45afffbf52284a8d85339dd48e926d9a9794e511b5c1147716244d85eee2d949. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:00:41Z), 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/DEEE32118602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0a898be8216375eb3b7e71fa173798560b7389172efee29066428e49d184e8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEU601807865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026bb1449f5ab80c3a89ad2c941f24374c03e4fa8c1ca4b8945974e499d77522. 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/DEU601807866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f49b28f84f43d7f4432a22ef53f12cc1b6d064a1c9e5e34eb65a3ebb8b2e01. 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/DEU601606183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f44eb0b37652b65dd97327d3ff9b17a48ab6a56c7da95731a0a7bd7dc02e87. 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/DEU601606188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6ef6c7f225f4739f918948437f7aeee9216b9fe4bf153631bfcf71d98ef75e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEU601606191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fa8b4d8da54d894bbac2426f259e8d51816b30b45767c3beecbe9a3aae9c06. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:57:05Z), 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/DEU601606192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf4391312c1acdba28250344e30a8695698ac7cf3cfd84d5847fac00a6a5146. 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/DEU601304626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9e347a49fb7e393f8ce488615886d0a5beb1965e497be15ea4e00337d7aa18. 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/DEU601304628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedaa708813602417072d1392cea222feb83636c1ec7bcb321640fb9d1ab538a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEU601304629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34451da405c70de78664463ff214e3a9aafba30803b6feafd4c3e31ed3810eb. 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/DEU601103557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac5bfcf83bd628158f42fd2d331f17aee23cd4157e83c35bbb16ddb33eeb61d. 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/DEU601103559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2714fe7c25587576ed6d5c175aabf4a52a10b389b49976869d0f92c446b71e2f. 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/DEU601103560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adb56538c00e61ec4f9ffd645297535b3d0a9b537069213314a99d9778cc148. 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/DEU601103562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b23b6fa33aab8c4a1545de70a0c5ffb77f8a6a56ecca1c1213fe283291708f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEU601103563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d03543c9a9b7c0b1811a2aa4b7bfe67da1e4419aa998b7b81d2293a601c26c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEU601003324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9cb45bf5f70539aafe8dbd8c04e5604cb78b33c26526ca4f833d2377e3aad2. 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/DEU601003325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35c3398aaa40b0fa066000bb54fe820a0392768622a51f92571705eed80faac. 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/DEU601003326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23da720abdc74a4376a0a771ef10a1d46f3b057e053258cf7ee5e25d974e5bdf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEU601003327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a969fea9d876561158eec719238afa92aaf85c3a607b167ec208abf66449e9. 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/DEU601003328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2aa71e20df17c11c75c34bd4211a372ac2f2f54a43c8b506d6f8453168ae8f4. 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/DEU601003329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd59fd9d977cb1b866281f37a33f3d5e23415f89caf02f6ae994abaf35f6ce92. 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/DEU601003330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6257b3b6b8f90b2a13fcea2c614159ef7de9f691671143613532fb1642ab0f1a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEU601003331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba85000278d022796c249a2b63f7d1f6bac9955218ef5f1480beec7a69850f2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEU601003332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5814f496db6255c376059461259ef2a9926ddff5f5f4f5aa67fcb44938a3e8c3. 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/DEU601003333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c57ab4b9c8edba915f511f602a50d27ff512dee552ad5443cf2ffac00cccfcc. 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/DEAZ40500404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f6f00d37d9fb456468a1ce3ab918d6e61cc2203f74aa8cfca378ec4dab9d25. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:18:05Z), 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/DEAZ40500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe477c135b4ce0a02ab39ed51ba9e58d6be92484f7af4559c6c1877bda3cadc2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:57:12Z), 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/DEAZ40500406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bdcb6f7573b837cbafbe0686bdadd3cd0bcaf02810fca1009609d5c24dc0cd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEAZ40500408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dd55dbb0e61374cfe329089452923f728fef811abf8363c86659e47ee85897. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEAZ40500409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaec08e5a9f413385e027a1cec8197661a360f55e9d7b029f40948f039c4d15d. 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/DEAZ40500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e91a0850135040786e1c55f33ed062f602d313b34b38b4262e6e1c8fa31e841. 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/GBDHC0503161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6882b3635aa76dbd67400588cd973380c5cec81d34d41180ab8b4eba27371667. 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/GBDHC0503163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5025367fb55347076fd68a39040d60a0efd2f7d42f8ca0d85c27719ae0c7d6d. 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/GBDHC0503167.