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 0x0761a9e46e1d4f2fb7fb671fe26729143cdf9bb1b18ba4ff0fc7aa86386f36b5. 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/109083c2-3a24-49f6-bf3b-e59f5b60163e.json and https://artists.proofprofile.net/proofs/artist/109083c2-3a24-49f6-bf3b-e59f5b60163e.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 0xf935769b7802606d076e6e23559f66ec5f6fd9a99fab61ec9779e301a10bf3b5. 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/QZRP52531484.
Bees in My Fingers Electroswing! (BioShock Rap)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839dab97f23f96a4b5627c4735cf7b33b03740c22295f40f3c696f626b30aea6. 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/QZNWU2284900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fe5e134b2d5e3e6b1c6faa28ce9eba954e6b6ca2b5ea5b71b2af1eb18db1b1. 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/QZMHK2069526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347e9f92e2ec756d19f8db5fc0315800ed900ba08dd32431d63559baa260ee2a. 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/QZMHN2086997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe798696824511283d6ab45ce77117ffb3810f1481a93f40a60c92163b223f391. 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/QZMHM2040043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3e9c590a84325620524f44343c752b041aaff3beb580c03b59c3260ee5b1b3. 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/QZMHN2010413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b165757481b3e787f6e4e53b2fbd35cca421e619ae75990e681e28679338376. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/QZMHL2007991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6631adaa5ac33ca682ad541772ea1c756e6c935b88f943b4b34629af37d014. 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/QZMHK2063666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed06d721bfbb8d799baca6b3532120c2b0bde786aa1cb876eaec93783aeb9fde. 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/QZMHL2021378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2fd5c3b515613df5f717d7d1e259119294161470045d02356f41aea5c33dc6. 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/QZNWY2066166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d362cf369522ef798201aae853210feb9f7f88751661721139978b58ca844c. 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/QZNWQ2119809.
Generation Gaming XXIII: Breakfast At Limmy's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40d4df162c1312b994c49f538a7f2a35380e8fcd90c5c7063662d6459f587e1. 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/QZNWT2096861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fcf457cc47585ee1386972a73228a9ead3af7ab630b8b24468b3044a138ce8. 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/QZDA52177059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa225e3ba0f6e5e9883cd16e9894f6aab2c87075c2962bc605a790541561b2287. 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/QZDA52177060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67c5b0dba63c73a25e809800416e8866281c91f1cd0a6b984708e4351d8598e. 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/QZDA62357420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5444ce0e59f96f817639d4296af74f4bd6f17c1459a18c3f66d66f301398a09e. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZDA62357421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c0a6f6c0785eab6726d9575a75585a802f411e6a6ab4a2c3d096554b1e16cd. 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/QZDA62357422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd922f12c87d376c6a266bc2d4d057b9e4b7a94bff3252a3f76220447131f068d. 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/QZDA82241636.