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 0x689a1ecb4f5f11bae1d1eefd2f1137d742e3ef8ed5db31c76d6a86d3473ab42d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a7df77c-f4c8-416c-bc52-de8a503246e8.json and https://artists.proofprofile.net/proofs/artist/6a7df77c-f4c8-416c-bc52-de8a503246e8.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 0xabf9222cb7cf62e3cc2c36f41baea2a5b14adbbd36e2b44ca1c5140da00d0bc7. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEQ022291803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa8794c5ff734611a203a72bce067d0912cf1632ab04bcf50320b9d45d9243a. 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/DEQ022291804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217f91dc4f416f370f4ad9ed5c060c0fe655e510afab7533d88c805c219b6f63. 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/DEQ022291805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3274671cfa2584e1f1ca88e2cd005912dc9dd16c51b77934af212da1d6efe1bf. 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/DEQ022291806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faba03ddd31905d996f54103f9496c6d54948ab68befff268b951cce4c03d07. 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/DEQ022291807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881c848b41a440507ed0422c2988e39826196e121ad9df64a68248055e3473ce. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DEQ022291808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3680677584ee485e06d43351f45c5ac36502971d8c0d4d3ae8db9299abbb5f98. 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/DEQ022291809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcae49b42541809b3cb6315abbc5dff2fe658845e4dda6d64d131a900d4d4e8. 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/DEQ022291810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8a5e8eea0b653c15bddee143cff5954339a14de583343376e0ef20534acead. 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/DEQ022291811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adcee360dcce8550dc7e6e6aec8312b5ba5ff6e32dd249bf416852460347777. 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/DEQ022291812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7415f1d0cf8ead36cacb62300bdda418e633b03631ebd4ec2e4c873eb5e2a26. 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/DEQ022291813.
Teufelsgesicht - Hulk Hodn Gleisbett Remix
Teufelsgesicht (Hulk Hodn Gleisbett Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeab50ac43406d86c46bd72d79c6a42ac098c3c66ecbbe244322ef1568e05d3a. 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/DGA082415009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d3046c8e26b31eeabf63da74910c267be494f6c408f42df9bec0faabdfa6a1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRX452476830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cdf7fddc8cc8d5a21b247dc026c4e70767080c3f16e28bdf358bb2c29671e1. 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/FRX452476831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1388142fd8b068b69a8d681cadcd83e28dcca12113f12674bc7d95f14c3a0ce. 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/FRX452476832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed11037230b9ebb09449a59e37535cc684ad9293baefae6aaf89104fe7d9501. 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/FRX452476833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c77c99d75c89a14ce58eb64d31df39eab12fa1d06ce7c35405b65c60d22abe. 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/FRX452476834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397192aa5265322cc285e597d3f1bd046da8187bf45eb96b5ec2ce8480550a26. 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/FRX452476835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0731c9c9e2a8ecee310da42137578b70415b243aa35e50c06c2c233777c8343. 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/FRX452476836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617f85ee9dcc2be0694a23d3363e896ad1828d432b8e3e1778c2e0e8f9a855e8. 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/FRX452476838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b28474f73144db80b3f391dfce8a76bd2eaf1cfda33bf29bf878e38d5c599a0. 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/FRX452476839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a4f659b742263e042e38b3b0145e70d2ba902d848332e4364c7d6425a05223. 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/FRX452476840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dbcc9fdda112266aabb835bbeab37b33206b9ab7f481d0c3bd2e93c16ce365. 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/DEQ022384349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32ec616a0e73797ac684eb1c79c40bd4b4630e0899c18b33bfd685c6dcc896f. 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/DEQ121752085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54874f323ca20ebc348d57e5998702ead05f7f71159690a9e8a39d75bf9c0d55. 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/DEQ121752086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6362fbd559ce04a95e7eecc9bf459cf14ba13d8b09e420870bfa5e11a47e5094. 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/DEQ121752087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b64583858b2fea167a49b6177b497ed9c77fc61c9087b06b038a2b8d311fb4. 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/DEQ121752088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c9860680fe1e941e5b548c64f731df2e3505461b3bf3cecee722ef644ae584. 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/DEQ121752089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a900d2b8b65f41c7c530041ad2698f09332a559c1b7137e05484e327232d390. 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/DEQ121752090.