In seismology, an aftershock is a smaller earthquake that follows a larger earthquake, in the same area of the main shock, caused as the displaced crust adjusts to the effects of the main shock. Large
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 0x6ade37f5dab6682483e4931c5d6fe14c24786b9bc2e9e7740590b0d112400090. 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/1f3e6b92-9e5b-4366-958c-311c620e9bf3.json and https://artists.proofprofile.net/proofs/artist/1f3e6b92-9e5b-4366-958c-311c620e9bf3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d600d3bc9e302dbe9268793c6622c099385547dba1c1f2836fef39a19c434d1. 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/NLE801900552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21efaadb7723a8fb27905ade3402ef2a5c863b3d1b1e27cdca74a8ffe56aeb2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLE801900522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59535e40902d6e8642ff61afe5c03ed1fbd125557150aacd664ebc3fe03c276c. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/NLE801900487.
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 0x66d03ad26046b2d1877d1dff72bd4a5739c8d449d031b7c08cbfb947e282090d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:14:48Z), 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/NLE801900556.
Infinite Force (Shutdown Festival 2021 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a903fb9b6feb0e7513ef14f789052a120136f1aab8b705ee047933926c774b. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/NLE802100544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176c539ce8c1d229a6da7a9e08129e37d8c7bb181c299c02634fdfbe9f3fcc84. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLE802100664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf35287c4fb2684cb5d6d9a57f43f04686c7b2a8feb671b1ea0031ac32892dd8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLE802200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa468cf0862fb5de420808aa2221a57b4a6bee11d2d5ffa03d6ff5130e7896bbd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLE802200195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af6abe1c1f9b871de594130c1a98cc2dd01bb145e5a4b7799972c839f863282. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLE802200365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa451c79a89340a339cef1d719c920000e98117c6d6747ef00ea593954e051f52. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NLE802300398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338350a1d40cfae6b40d9dae32bd4437e65df1b399726c7ebfee3b8a5f491090. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/NLE802300480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9c864e87054dfaddc554d8bb82923e9df86bf7391e5d853e1381b0ac4709c0. 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/NLH2L2400175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ca68084ad757f170ce13bfd4b8a7b2c107f27485f3b345e1b1ed406dc62da3. 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/NLH2L2400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f032bead9be9dcc85a1e9b848c594c01bf3b0b6fbb6409e59dd360323ed43c7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NLE802400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7ec87643c98947a5a158aca616378fd4d6edf9b5f6e2dfaa9964da45dda251. 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/NLE802100343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0bdd8cb075e5dacc9a835f73022cfb1b4a5459c36e2d21d1ab786d81ed5138. 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/NLE802200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe567d6fb30fb0fd22bab855516d243ea595f55c4fc9cea989555866c87a6329c. 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/NLE802100184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda7376b68b4909f9c7aa84c1ec5f630233d565f17ed7285d2faf48020d527d9. 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/NLS762300888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6f5136b40ae7770b016d9c4890bc19e00273df6f72f415aa3dca9e409ec9cd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEHK92106973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b00292c19dfca06c69e56b2cb863cdcbfe4cbd5a6fe933fe682829be51e1ec7. 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/NLE801900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2477e1ef7185fae569cf1579bb04c257f479866cd7dc1661b697906007c58adf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLH2L2300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaf799f59dd4902de1394d54a8238a177ba0dabdb04fec5c35070dbcc389347. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLH2L2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2956cda2f5293f6478700e8a1fcadf78c43be95fab01fa79fe86ba68f498589d. 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/NLH2L2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdef5782f3b29c2522b4155f0cae8980bbe0a3be5b4d985f8095edcab330b78. 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/NLE802100438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524d26476bcb1e4d2b2e2c6878262262c6193fb0fcf6988e5cdbf4cfc71a1d11. 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/NLE802100621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d01bfa132ca6182d1a9c249e45500fa5ecd2a92a8ca006704e3b3795c9d8a4e. 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/NLE802400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a77ae2ba4e26fb531d0515dcc8340a2a9ce49732417a4a97ca0791bbc2f1be. 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/NLE802300336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf37877d8ed17fda032b85d7419eee5671418dfba259732cdc262df4be4c5b4d. 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/NLE802000166.