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 0xfa8a78ae78609abf213ebab82e526be564e010998c27d7e201c202e3864a806c. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93e4d900-319a-422e-a899-d99730a82d2e.json and https://artists.proofprofile.net/proofs/artist/93e4d900-319a-422e-a899-d99730a82d2e.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 0x3e4d0e695fc8a2d2e016a53b6185cc88e5086aca68da039277d0fa15dbc626e9. 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/QMFMF2114724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4570d826020baf2aa4d0f3f3972d34bd63fd22b090008c0110241b8bc68bba06. 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/QMFMF2114733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca12b7dd17a270abe5475e87252c0bc835081b5ca92c0f368d9e30f0dfbed2d. 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/QMFMF2114742.
5 Dikter ur 'Fridolins visor': V. Intet är som väntans tider
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaf3e867666419bfeca795cbbf16e824fc0c72dce5418fda10d742a92e87449. 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/QMFMF2114719.
Ur 'Fridolins lustgård': I. Längtan heter min arvedel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa32f12f8cd4dd8eac73cda3a0a5cec2ceeaddd50b20c657105b031ad1aaf08. 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/QMFMF2114720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ea59fa056449396e5557fd5df493f61f90e53016c4eab7c544de066c57d568. 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/QMFMF2114721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7d71c8d70edfd6f1be3eea19050d4203f3aea310661d914ee6e628713853a6. 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/QMFMF2114722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc567b7b2fef134d2d63a567d4c77399c199d18ed2d7d18d8b3f2a0570bb0275e. 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/QMFMF2114723.
2 Songs from 'Idyll and epigram', Op. 4: I. Flickan kom från sin älsklings möte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bce2d1a57195d8acec70d42e0d3d491f75a91892e92ad29b3b9e7bb819cae4f. 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/QMFMF2114725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e5e4029600140f112e234be1390c73070253b0c254581e73bf990d2a8d9342. 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/QMFMF2114726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ff880d5f9bef55c1ff4bf99a1500f47b0beb35301ecc1f8c63b8adc3a588ff. 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/QMFMF2114727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3ad564dd70d3dc669b1cc62becf69399178d7bd5eb87c41c98676f36bf2645. 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/QMFMF2114728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b999cc1e8c149c0819ba745eea8db7ed3661d67f12a2bd09e39fe72f4bb6d31. 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/QMFMF2114729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8ba8689e84eecba84a618bf8c3396a6ec5c87d6e689f47106a2bb77b21d2be. 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/QMFMF2114730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39ed6cd74151d3a136253deb860585fadc44f116d17892e8ff3596d27c7b5be. 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/QMFMF2114731.
7 Songs, Op. 13: IV. Våren flyktar hastigt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa127fa5223e043ed9fdf40bb304b9b0dedd36db8bf43c880e4fdee857ab2f6. 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/QMFMF2114732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ff387a2c386bf1c6229aa2e0c88adaa0e020263f56910c34cd6db682a71a22. 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/QMFMF2114734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4fd98e6edd686ea2900e4b090de3dac9aee50deebe3bafee79341e901d6801. 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/QMFMF2114735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d0c7a6ef2eb7153a68143b63afb2c382c6805921a9bcb7f0827551623d50a6. 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/QMFMF2114736.