DumDum Boys are a Norwegian rock band from Trondheim, formed in 1979 and originally known as Wannskrækk. The band is one of the most successful Norwegian rock acts of all time, and are considered one
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 0x918546c0cba8c6ca984c5b9dcf8c6a726752bd510cc4282162c04f46c8fdbace. 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/a22ed42a-06ec-4463-bc85-5a242aa739fb.json and https://artists.proofprofile.net/proofs/artist/a22ed42a-06ec-4463-bc85-5a242aa739fb.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 0x32dbc40a1f0150766086be3038507ce073b6d8caec4a288bbb806147db203925. 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/NOAAC8901010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fd810d5206671cb20c0e2f2c5d8421d5334ae2e26abf38aa22487da75cfd5b. 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/NOAAC8901030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4061517f382c0c65386f21b481aa15a7345144f55dc86ea8bfb6ef44be0bfb0. 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/NOAAC0212040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e83dd8f6582d62545acfd9450a33ee45466524a3db2b1df49f51738780bed44. 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/NOAAC8901050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d66dfee1166a3957819716e6588f26354ff50fae9c580fb5550f1ccccee883. 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/NOAAC0212060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf8055fcf04b765934e661733e0833dbbc4ba8174111b612b71361f5012ada9. 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/NOAAC9002010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5ddf4e1c9fce90aa449608768da6d1812958174587394b0293c4ee5b68ac01. 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/NOAAC9002020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3ff819709050a6262237d33c1337e22e386ef5022fa2e743e2d5d48894862c. 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/NOAAC9001040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0febed41125f8f13bae1f84e7393686caaaed7c2f78fa35e77633b468708d1. 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/NOAAC9001070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9e7b3227698cdd37c1db9473dd116e84f3491c14a8169081859908b3f4a6b7. 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/NOAAC9002080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2419efc03130e1f3092d857894629e53267c4d73b45b1e9f5fa81188da29d02d. 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/NOAAC9001090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9954fcc065801a18e9b45f4cacc7895992c3c4d336a13f6f4dcdaa03111ca4f4. 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/NOLBB1802030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c9e40c6b189c414dd765788b52ec9270e33cd26a5afd53cafe798ebf530f09. 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/NOLBB0601020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10bc5da40e36ae326f4a15bae281867cc0ae71d3be1ac48d53d4c427c502de7. 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/NOLBB0601040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cbdf110b6e74db05bbc40949d712cf0b535c60598da76810fff067655a46ab. 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/NOLBB0601010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572de3d5aba7292461a306945c38e69e192279a8a78a804483f39c8dcddc53e0. 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/NOLBB0601050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd158c36fad5a8757c382a6b0bbc4feb3b902b45db102d55b0d4f0913fb19069. 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/NOLBB0601060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8818da8ff962c3b6671edc8d0f0e6ad94aeb1ca96e3dda6b3b8c57277e143ac3. 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/NOLBB9603030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7dfd8425b3e5e7021f40a7b3918d256a8a9ef375d1c2fbf265bbc5c60b2cc8. 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/NOLBB9401030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21e128d8a40858a8ab9d933d5d6e8e12d2389e63f86c8cfa98f0125ce5c0395. 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/NOLBB9401050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe274ea16ff8c0a8a2c4ff971e010c068a7a9a7ccd5946ddf5a6459ec4b60ed04. 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/NOLBB9202010.
Blodig Alvor Na Na Na Na Na (Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0ce7fde8f3c18f7208fc5a983f798fd01b3a9c013ec8b9fac98813773ca9fa. 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/NOAAC0210020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32209ddd96aa8fbbbd27bfe7b29d49289175254207c44bf119b9cae4679b5e77. 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/NOAAC0210080.