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 0x068d794a2ee50e262bb726eb6ab35f14e35e7b3ea59e4e05eeac84b7b0876185. 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/5a9f465f-20b8-40b3-985c-fbd957363ee1.json and https://artists.proofprofile.net/proofs/artist/5a9f465f-20b8-40b3-985c-fbd957363ee1.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 0x5d1f53d37e42c3a2cbe135efaeb217baeb9109ef79ad874ab74caa5bc3c36841. 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/USAT22303223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe1da20a734daf18f8b082bc0b2eddce1713c958be9e05a1ebe41bc4ae280e5. 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/USAT22303224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbca257391997ef0c68dc39b6c31f88ca2195a8c7804bf9252f51312b246493. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USAT22303225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dde8f98a0c239b18585d98b96627a5a2cf008235c2e7fcbe4d3bd4b1b00341. 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/BEIW12300647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b68800649b65898212524bb25ec175fbe1f28bffbe0b0ba4e5162eb08d0eb94. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BEIW12300650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f47620fc1cdb852af6d3f0155837591e48ad63415afab07e119873096341a44. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BEIW12300653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b6e0f399c1b493ac9788ec33d184575da701da9d556a0720ddcedc475964e9. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BEIW12300656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157fa7c9037583ca4d4adfe4c8e4b63c2ae485ba57dd0cca98f5285bb9e3501b. 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/BEIW12300459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c28a8fec63bdf3a8e459f338274df20044d3a4c2b0591818118668044ffbb9. 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/ITV952200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb1b230d49c1ae18942a2ae846e892ba7845d2cbd6a0d30e79a977b3bb58854. 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/ITV952300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e258ac3cac63dc21ca760c4f72077ee1bb8d9d22a917e4925ed1dd484063294. 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/ROGRA2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6a687563fb5e458fcd0fc275a1ed70a988b15c726708fbeb3c3c7187879a79. 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/UK4ZF2200243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4515292b9dfc563a1b34d81699d08900f70b97b772a42ac3e2b5c1cbb8c3877e. 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/UK4ZF2200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ca1e2c18367b2644719cf8719fd1779f77cc5ff0fb4f34eeeb1cd87642c7f1. 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/FR9W12363283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163fd626227afbd6f41e3b0cb1fc7f3d1bb4b2c23f1ce806db70139a1b91c065. 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/DEUM72313273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe5f7e910a3f85a674ede72eb645a4d190877938ad45463e79187fd114c0d23. 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/FRUM72302505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26371f58ae3c6cdd086ee4fcd1d56d92bb3621bf2be110e41e8c4d5d2883ea57. 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/GBUM72309843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ea88672a96c2fb606ae7f19b80e061765915235d89b85ed359541abbdb3968. 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/DECE72400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb1b230d49c1ae18942a2ae846e892ba7845d2cbd6a0d30e79a977b3bb58854. 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/ITV952300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e4dd632847abc2357acc489f8398baea2d504127c692092403ee55635f6e29. 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/USUG12307206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf0e4a251735e7212d80f6d0cbdb673955fa4eff53f782721ee40a9ca37e35a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEUM72311996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526947aa3ea057bd2eeaac4752967adcbde3f27de182ddb849c9bb64dfc82a72. 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/QZTB62304260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ebb55a0b5271350e90bea326210cfda9beadd65fc9f7b76f00ec4a0f3c809e. 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/NL1DT2300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01205a295fa72af545aada995f9d8ccd93d43ceb6ae5750d6ebd01f882f977b5. 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/DEVX52300145.
Ich nehm dich bei der Hand (SimsalaGrimm)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2b44f827879b6f82e7abe9210efbb825b4d45fcf7ea5d7c68ed5f8745ad8bb. 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/DEUM72313390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8268252c98f5f000e4caa07e8a9b6512bc9e4775a8ea313a05397a34cc77d45. 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/DEUM72402197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60afba3a2839e100e91294487c0ef04bd6448bab1ef5becc21764c186def858c. 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/DEUM72311458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c355e4b102e97dabcd3ce2e1d0663131c1f8bd0b1f08a10519593198a0f7251. 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/DEUM72307092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c1d677610134558dce2331b8aef8818a5d56b4637e5b96a9cdf62f5cf32102. 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/AUWA02301085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6189639e6ca2534714877b2e3530e9017378412b0047c3c530bb6daf0f3ce5. 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/DEUM72312153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1094be3e526f1d2557b48b06c34d8f9315a1bf3c7281c72ede5a9c6cf63a111. 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/DECE72303404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51d612ebfec636c8ee0868803ec9ed89bb0cfa6878e2ee0560dd8e158d61bfe. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DECE72303207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaee5378244c67d5ef8a3e8618ad38c3a7b2f34b709f06e347058d84b2c979da. 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/AEA2D2400392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a363fadd1f29a79f97469cff5749d9d4ece4624bc8e64ba78b279928f8ff97. 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/QZA742318982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecfd97d506d9381dd5569c278d144f8612b9aa2fd3f83131a631353a347b869. 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/SEUM72301626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3897e0262cc1265c472c72904ce93b0cb6b515ee01b89a7a080dd945c9f9186. 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/ITV952400335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7382cd1d42a3004f8a551f68fb1dc631599025d1ee13d3a29e08c96b6b1cebe8. 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/NLZ542400436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a77ba88b901dbbb547bd6a1357e0b0358096826cf027ebbaa56556810864d52. 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/DK4YA1918301.