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 0x8ec5f34f808fa1a14b453f13862bab3b4961c3a35f385a56198d64afc3894b66. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9db2a55b-3fc7-4735-a9bf-a24fc54d30e8.json and https://artists.proofprofile.net/proofs/artist/9db2a55b-3fc7-4735-a9bf-a24fc54d30e8.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 0x7057c701959ddfaa9c0d2cf2a72776b5d5c934767decb00fcf11017bbd4e042e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:43:12Z), 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/CH7812046007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec427ba1e71a4c127922cc83f2875c4a5fc1567b8b17fc0bc84d60ee2e44e966. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH7812181675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd60eb259cbc9af768a7f88a5fd2fc7dd779a73d1aa2db3c7c9b97f5ee05e54. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH7812187602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e423c04156c23de7464f5574cbb71e0c84ebe7b6bd29a6f07890d9a63b67bd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH7812110202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b8568c4e8bb9ad38c58a2ac1cf3a8fba24d3b08dc73be965c2776803e93197. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DECE72301517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbedbee115a600d39af8230f246d3ebd84b725e32976cbea3d3f663f4855b4f. 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/DECE82300766.
Always on the run - Live Orchestra Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b49c6437d1cf4580deb8173b6048f0d4e81b527bac70fd1d4da6672deae143. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DECE72400846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25387c23cecf8cd265354661e14f496f4d41aeb9740547ae7097d6fa3d46d51. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DECE72400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ebb423454a91a3a55fd6064454e8c3949eb70d53abff610b67801b03bb4ff7. 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/DECE72402096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf25d4db9cfcb5cf78e4ee8de3daeb387aa4be90c81b557edf8f184c9381d2c. 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/DECE72401670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25387c23cecf8cd265354661e14f496f4d41aeb9740547ae7097d6fa3d46d51. 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/DECE72400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7848db398d200ddc0a5ff6ee7e21dae92af535b6c715c9b2dd230839a47100. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DECE72402871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eddd1553ea887506b59d5af3c97d1a14d4a5e75bb4ff1120a8fb854722f371. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:52:23Z), 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/DECE72402106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25387c23cecf8cd265354661e14f496f4d41aeb9740547ae7097d6fa3d46d51. 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/DECE72400010.
Always on the run - Eurovision 2024 - Germany / Karaoke
Eurovision Song Contest Malmö 2024 (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458db29e902002169522e8c35a5d1b2f508134cd2374bb96a469a7dc29c48185. 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/DK2DY2400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25387c23cecf8cd265354661e14f496f4d41aeb9740547ae7097d6fa3d46d51. 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/DECE72400010.
Frühlingsgefühle 2024 by The Circle Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25387c23cecf8cd265354661e14f496f4d41aeb9740547ae7097d6fa3d46d51. 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/DECE72400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ebb423454a91a3a55fd6064454e8c3949eb70d53abff610b67801b03bb4ff7. 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/DECE72402096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25387c23cecf8cd265354661e14f496f4d41aeb9740547ae7097d6fa3d46d51. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:24:59Z), 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/DECE72400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ebb423454a91a3a55fd6064454e8c3949eb70d53abff610b67801b03bb4ff7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:53:06Z), 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/DECE72402096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf25d4db9cfcb5cf78e4ee8de3daeb387aa4be90c81b557edf8f184c9381d2c. 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/DECE72401670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d02d2bed485b8135faf947dce05233824416d2443835682b10e568d65f11fe6. 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/DEA622101443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c3e7ae0dfd9b2e01b894f03c177ddeeb6b5133ff6c0da78d1b8ad1a6bd41ca. 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/DECE72500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25387c23cecf8cd265354661e14f496f4d41aeb9740547ae7097d6fa3d46d51. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DECE72400010.