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 0xed68f567490445127f0045e46d06a5b4412aa0236d4ff81cede6f112541a1a62. 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/0850b23e-0929-4120-9792-e08ebf66f91f.json and https://artists.proofprofile.net/proofs/artist/0850b23e-0929-4120-9792-e08ebf66f91f.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 0xdd062ea8728c2ffd6c807f4950c6c808c75d2e83f7b3564266a29b2d7f66811c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SKA881000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39d6dafb12f302c46de381c504f6f644d0098eb6e177dcebee53d0f94fbdff5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/SKA881000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80fefdfc324675e5b3ba9654cc0b262d1138a5c4f06e5c2a757008113a11a27. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SKA881000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72612d402c1e873391238f42d3fd6027d41d7da6d69717525bf9e36d49a6f5b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/SKA881000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe72942b8783ab1501ac5ac42edf0c58b10f6cef4398c07305cb6d2c2a625ce. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/SKA881100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bcb4cea5095663f25ecbb1aba6df768f187a96e7ddd44748f9e8fe16c43794. 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/SKA881100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f60567be427b6b83f4f93d7d0d0fdc4875241fe87f6c2e992e3ddd873872d3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:41:27Z), 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/SKA881100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb356b89af06eabfdba279589c1adc8cc65786c11147f6be82e38b3623e5f424a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SKA881100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb542415b8152662af87e3f4f78eaea2760e3bfd4598626480434d9db96e561c0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SKA881100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc405547f64115ebda7b5e1caad800fa72124ae3001d1ec2dace89905870863ba. 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/SKA880900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75db772e6de0e497b346fe6f22f41324d2de8a842c82238b969a0ea038961fc5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SKA880900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e1f53e276eacae49e2359f8900b795bb824bc9944978758b32d05063c1a9d7. 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/SKA880900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8365341e8eec46ec98446e0ceaa787da22e5787d9c00178009032b4a07d3ad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SKA880900031.
Keď si dala – Hej, tak som si pomyslel – V pondelok doma nebudem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702af9421576b1bc191cea884790ad438c5696a2c3b089ac184b4d6acd6433f5. 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/SKA880900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ec61af45a553767bb47b548130203b9ee917b84b4745dd444c4e118040699f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SKA880401172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df1d61ca1fb953b01870a6e21021426c8b16e47ea3bb758fbe9a725f8dd36ed. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/SKA880401180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1c216fa1b73b83a391b312dc05cd63f9fe41516f3f1dceb2e1b83c0c56045e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SKA880401151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee12e8d6a236d55d1bd5dccbf5fa738af85d9e4dab49ea121673058591bcd02d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SKA880401152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8bb1735fea91acb8d3a2df1bb0c99e31ed85a00687278fabe22c3990bef601. 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/TCAHG2353585.