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 0xb2c9f4587d3b253e6c586a225ae9af31a9ba8a01fb49ed02296fba7fcb8581f3. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2f3bba8-f02e-470b-9138-00792f75c589.json and https://artists.proofprofile.net/proofs/artist/b2f3bba8-f02e-470b-9138-00792f75c589.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 0xed7efd270081ae28eec05a0d18363eab01e647239d0c4460bef2f6ad0e6862fc. 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/ATT471400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714c8f3633f458b6cc3abd12418d80bbd4d35d9d18ecbae44861e37bea43db5a. 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/ATT471400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1d4b77a26d963e5cd3026f79b63a60dbe81cb1121961d7bf3163b5bb7b3c47. 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/ATT471400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054b41761dc2858c8ab560a2024dcaf378e530d24233a36677129d318b06ebb2. 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/ATT471400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d386fa85b7674e6b4ede0c1d65436273d299cadca467d888275c26943e02004. 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/ATT471400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e923bb361441ef31b57d77da924110d3ed3d1e0569976f88a2ad489640c10e8. 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/ATT471400209.
Hausherrnsöhnl'n (Unser Vater war ein Hausherr)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612885b77db964bb203535f1b85ed3fce99a794c6b2be8ec9b3327ba573d8c81. 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/ATT471400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa764bdec066117db6ffce342fd6e32251c6bf1683a3178e050c69b8782b5e410. 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/ATT471400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d10d9d78b694a7eb2dfe5c33a5a961b31eeb3c272336a3dcb2e599c07956e89. 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/ATT471400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b74f797711986fc43234d9d65f50455b58aeaa8bde428b6a8898342acf6c86a. 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/ATT471400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9eb10118f167864cf58f0de96eb76ae17616678d8980de66d496614eca21a8. 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/ATT471400220.
Sperrstund' is (Das Lied vom alten Ober) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24713813696c6a135440702c56fd2d8887ab3b08bee5013a3917548aee8c3030. 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/ATT471400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d16fba3a40a19635b1a269eeb5b3dcb8ca9a04ecb174e306272255625c106a. 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/ATT471400225.
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 0xf04422f9b7360b6666a0f8054a78459b5fd6edce7d70086eed6ac3b1f0384c74. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ATT471400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921d316869363a60cb569136b6afcce98dbd7b296e6e3b6f166c9fcd3a25dfaf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ATT471400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ba4db69ca4d66f2ca7bd57fa992a0a9ec57b6be1906d1250010443061c8e27. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/ATT471400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52654b7e7e1d51234fbe63072cb87afb5e1bc72427a2ffcfe758ae10a1288840. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ATT471400213.
Mein Herz ist ein Bilderbuch vom alten Wien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3865b05a18cccb73499228542c0e9fef1ac781c13a09bb4e497ec2b48a65ab45. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ATT471400214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e0806a5c8e9340bf97885c9abb0d5f9f34c9f4b0eaf8f6934f884e0b2f9eb8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ATT471400215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd27de2211aea1955583b8813801c633687b010fcf9c5ade0bd0e369dab99db. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ATT471400218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353b5c2e4930fa1d3cafc28e7a890cab45cfaf8f82ae537ee19d78a95b0f8998. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ATT471400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61942be6950a154c5781afe06a83a485ee9aeee030d92e72d52d2aa4c9ccd6b. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ATT471400222.
O du fröhliche - O du selige / Weihnachten in Wien
Stille Nacht Selige Nacht - Weihnachtsgeschichten und festliche Musik (Classical Choice)
Morgen kommt der Weihnachtsmann (Eloquence Junior)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e45535bdaff1b619105d3d74bc1d92aac10d8a438ca384522eae063ebbaba9. 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/ATT471501603.
Hausherrnsöhnl'n ( Unser Vater war ein Hausherr)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75249d6202f529baee4b2a9418c6989eb8ac98b20978a31a4c79fefc3d092191. 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/ATT471501610.
Joy to the World (Ambassade Orchestra Vienna feat. Wiener Sängerknaben)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c551abcf1b087c5bd32d6a6fdcd9df6e5ab38efdeb3812d7745f32934b880a6. 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/ATT150150110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a6702dc6cb444464c0d27c128ea4ad6a5f8a5ea3832d13e4b31519010dfc5e. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ATT150150108.