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 0x9a4727c3f63c9f799ad65a99e6f113e4dc7d00ae834326572dce19652d6495c3. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b08399b8-710c-4e36-969d-e7f09e62f9f2.json and https://artists.proofprofile.net/proofs/artist/b08399b8-710c-4e36-969d-e7f09e62f9f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bravest of the Brave - En hyldest til vore soldater
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 0x6c1494ebbf62b325be4abdea6806411906c5062d1fda0bbc6a4bb6375d3e7165. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKXHA1000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b4a00d922ababee54320829b209ce79a08761da391729d02964fb227a8cb03. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKXHA1000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c836c184b80bf102ce4bc0fd7814786dd9107ad6b0f8ecbe774cadbb250e81. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKXHA1000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6c24229b5a9f7c7880850309805c75c914db678d5958200f72fd17a408fffc. 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/DKXHA1000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec836a05cc9631d6db842b7d750d71809c55245ac83af804e400719eb4eedeb1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DKXHA1000110.
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 0x55b1724bfcf018bca4a595422d62ecfc21d5d2c7339d79cacb911f43da00f978. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/DKXHA1000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3eb29b6f602bbb1a4737ea52705f3d080f88a037ea1aef055f4145d5e8d8b50. 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/DKXHA1000111.
Music for Ballet Class (Sammatti Dance, Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49450218491eb9a14079d16c699b7211e73b5d509c7807cb07b8567fc7473325. 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/DKTF71800103.
Battement tendu avec plié - Faster Tempo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f04d37ecc729ceca8256524dfe489090e04f113f04ecd411360ea645216da8d. 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/DKTF71800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273022d9adf4a1c2ff80961db272e31d0d3271c45f95aa084b03ba36f9bd0890. 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/DKTF71800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aaf0aa26728aaa3bb24e247e94aaead10583a2aa143b4153f2385ababf27cbc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKTF71800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe097e4680bf897f2086fda57c0895aceb70727387c53aa7b359e5af6b541b3bc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKTF71800118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2892b761fc576f3a04f635bc335956db786b2864c1089948e6bb731e8e1ca0ed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKTF71800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1731ced370815b670da820edd82b5129e194530f670bb8ca4bef127febd29ef1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKTF71800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb0575ca57d1d528ab33a0fe19e116594e11ddaf7081f868d71722af4607c4b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKTF71800129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71115e4aebc1419367d877505007bf90e590fa748ed1d9e83c1a2a5dc60904f. 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/DKTF71800130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c8146b70e3f3299185713af403ebee75aac624e49810cfc856e4337fc3fcca. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKTF71800131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33412fbc3cecb16fac25df417887777d12de9a044c01460971a58566edecd5d0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKTF71800132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804a50d2d4f904be4c6e21e24aeb63078386baef67157e16843db14d0078509e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKTF71800135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74108dd7dda52ca17f63ea3f6c6f0918cf0899007f7ab204446fa0429ba89cf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKTF71800136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38b1b1fcb881fbe9bcb844d4168bbd83770305020a5b1749da7acaeb4a6f6bf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKTF71800142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ec103e0ef7a4aec31cd8319f027891ba5143ff335b259d9230e77764ee2bfb. 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/DKTF71800144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8830c675d087afcada1c0b987adf0bdabf0aa89754fdda86080ac0320d08cd7e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DKTF71800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7115b583c4fde4c2f5b7f98860dc4a974ce7807f0698ba9c7a6f1a4ec8c7d198. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/DKTF71800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3096ef0ce0c9bbe8fcd94943200fe07f08aa6a6bf6b9cdc322b07629eae71da. 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/DKTF71800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f538942eabab511fb10806d70ca9e62ab4e5371460d213d7be6764e8b5ead08. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DKTF71800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6d8a49f0ec1b72a01f8ce281c79797daf3da7710ac522f110328dfbfe7d6a6. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DKTF71800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6815e874bcb65d0569302eaa8a5c0f61cd20801f53188688bddf21539093e61c. 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/DKTF71800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91e904b57a2e7f1966c128723a0796d3b7b712b642201c014b55de15f5e9afc. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DKTF71800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20c2ccba26b71ad8acbe1f7bd686ded18da13421b91bd023e03c6c53227ee7e. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DKTF71800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eced25b023675dd109f6b6612307a6980baae760f8ee3ccb586e775fc6fb14. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/DKTF71800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587b460098e9689f7b3b5b191f999b9cf3ca1ba369bda625168917063958c62a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DKTF71800117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4c7f45e8bc541b92948a1d635a13d028472b9be832555952a0c9d227da1a45. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DKTF71800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859541e248f121d16f181c7451ea90455fa84eb69280c05e379e9819365788e9. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/DKTF71800133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2736c00c45f8af1d07952ce722eebd869a9bb67ec9f98f70e4300c1830f9ae. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DKTF71800134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f17b3bfb00a71c7edf03ab8a72968fe2e1a7b70e1c0be9a002b19634089a54. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DKTF71800137.