1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x02995a3594e429960b8c533ccf693363f1129e13632ef777fede8075584991bc. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81fc1c22-945b-4ef3-ab00-29e31c4a3fa4.json and https://artists.proofprofile.net/proofs/artist/81fc1c22-945b-4ef3-ab00-29e31c4a3fa4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sinfonisches Jugendblasorchester Nordschwarzwald
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 → block OTSBitcoinBlock must exist at that height 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 0xa7278c6b78cd774591ca91f4adb45becc19e39439ec67689872a12dc4a0880c5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEL212311109.
New Compositions For Concert Band 83: The Ghost Ship
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27bc219faa7148055ca2fff56568fe40ad0c16cc1b61252222392421ac2fbd6. 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/QM4TW2117595.
How To Train Your Dragon (Arr. by Ton van Grevenbroek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab69726a10cfd9fb2e282b80d82aa822dfab35b9734c91e067b7f839ad8715ff. 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/QM4TW2117597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef008b52ac9f95b4d72edc1d3610251bc970262108edac3e2b3c61b737394beb. 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/QM4TW2117599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b42cde28983510ccfb3846a59b9fe62856d67266c8fc3d2e7b9731184de8d0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFQ2440131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69acc5f89c144b14ea38e368e7538cf5ac050f2a8cfb66fe2935453bd7b2fb5b. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZNWW2420802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb83459f407855785d420806f9a1d232a9f06112050b876bac94ba15e731ee8. 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/QZMEN2377203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3b7ded90ba685cdb09b92b7a6fb7d81b5e854f2af7bcf239703b37be2c47b1. 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/QZFZ72241283.
New Compositions For Concert Band 53: The Legend Of Maracaibo
Banda Sinfónica da Polícia de Seguranca Pública
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bf6cc8a2be1a09fb6252bb97a2695102bb7030471f7c29268c980e79c1586b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFME2062626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4744355ff705264706da97d55aa31faeab8cdc270e7d8c88fa774023f3fd96. 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/QMFME2062631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ce39143a613e26fcc41c56eaee263ea4f4d16e115842581beed9fed76d9637. 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/QMFME2062632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7ce5d5552152fc4d285663e4962ebb8a64cbdb008db1a2c6ed311038ccad1b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QMFME2062634.
New Compositions For Concert Band 87: Dunkirk
Banda de Música da Força Aérea Portuguesa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb029ae47f570b5a666ea13b4b303283e434f6222ba815bc31e86ac78b5d45005. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMBZ92185210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca666351062ab7281b743baaa287e3bf911793bcc225eb198a511c29f2ffd76. 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/QMBZ92185211.
New Compositions For Concert Band 58: The Island Of Light
The Island Of Light, Pt. 1: Cova D'en Xoroi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cc8aa2bf4e535808aed7bb45b0f390b48a110bbeb0919c0a1dfbfca676819d. 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/QMFME2078248.
The Island Of Light, Pt. 2: Sobre Las Nubes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6df6f8270e9481a5d79dac61930b39e07b25873b0167dda005569720b6f5f1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMFME2078249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dc2a1fbd4e37ae83647d61b0b67a0a772bb9fcfa04ef4ea945e2ed1e003763. 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/QMFME2078250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57449f8fd6127b5666eb085484fd26c39e0f6eb7dc74bf727b9c1a1e1b8de8a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFME2078251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8da23979ed775697746264a87e367c11f0e6d48b46f74bb7b2f2192bddbacc3. 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/QMFME2078253.
Tulips From Amsterdam (Arr. by Vincent van den Bijlaard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41f4359e64f73224528d4e258ec1535115b6b78e181144f6133578dbcb31f68. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMFME2078257.
New Compositions For Concert Band 86: Vikings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716bf72a367cfcf801192a84bf334b9e297f8809580950c80ac2f44febd0e15a. 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/QM4TW2122588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6758f835d07aa9b524755110f28b96edb03590316b7f7c92cfd7528a741c8351. 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/QM7282049231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16177ffe5d93a3407ba3010ef641624a1dc8fcdfdc0564af9454ccac98e35c50. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM7282049232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ee0b5963923344364255d3a3d3155a69fb0c3a66970ee13389d6b3a2eff3e5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM7282049237.
103º Festival Nacional de Bandas de Música de Albacete