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 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 0x3c552e3d353fcbb1fb5a96b1a616d343a10791aab8b21bd1aad85df7149312fe. 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/1c1faa5f-ebcb-4077-96bd-22758216d370.json and https://artists.proofprofile.net/proofs/artist/1c1faa5f-ebcb-4077-96bd-22758216d370.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 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 0xc1a85f3adcf4bf249553643cfdf6e6aa094b926e87ad81188620e25d395c8b61. 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/QM84B2372003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8db35bafa97a8d777e591e3bb60aed3ccb3322c1e89249b2e38f191af93762. 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/QM84B2372001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9881a6a50deb1ccf4180c434f0af42fc4ef6879394e8dac8a06dbf1bf584746. 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/QM84B2372002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a85f3adcf4bf249553643cfdf6e6aa094b926e87ad81188620e25d395c8b61. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM84B2372003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8cc82dd2445ada62393aeb051a3abbbeccc2824ea60094550d4e7b1c14b533. 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/QM84B2372004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f9ba8840f97600716a10d7ddbcc5d63c94220b93a1e2e638507dc2a545cbfd. 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/QM84B2372005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47aa6f610db5389c4e49d824cf1930803d02885663dfcef3c79153a218c7029. 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/QM84B2372006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404dc2899c86cb09f06d93ffcad19f47ec370f39df5f2a083e860109fc08e51f. 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/QM84B2372007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3680d6b26f255e64d20eadf8c902a3e3262633ee37ad2a2f363587c26517c944. 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/QM84B2372008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162f17036281e94d553bd8cb6c11c821a1f598d74ecdba9e641a425329db5497. 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/QM84B2372009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464f5c1df3eabfaf449e1a73a6748ac0a5ecbba94d53f2ef4da85effa5fe334b. 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/QM84B2372010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fc7d67cfe1ad772d423b0de21c5c4ba24710fe84b9f6dbc281f559143405cc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM84B2372011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404dc2899c86cb09f06d93ffcad19f47ec370f39df5f2a083e860109fc08e51f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM84B2372007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e87e374d1426a3704bdc3f45a93d851227c85222854f805f08cd2d772ec7dd. 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/QM84B2372015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e87e374d1426a3704bdc3f45a93d851227c85222854f805f08cd2d772ec7dd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM84B2372015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5976926332b1d4ae88d175b3559e9297f0cee2434698b4ba3d4db27f45eb199d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM84B2494001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9049e046d0ed23259546e57a8691be1f2dd431703e4f216bfa2916b4a5fccf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM84B2494002.
Love Theme from Spartacus (live at 'les sons du cosmos' studio)
Love Theme from Spartacus - live at 'les sons du cosmos' studio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9049e046d0ed23259546e57a8691be1f2dd431703e4f216bfa2916b4a5fccf. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM84B2494002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e4ec49664f6303e6228691f73c2210aa9c5cad4aeac6da2bc198c28c3c3935. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QM84B2596006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8402c18c0d62e3241bf64dec5ec806605b3f2210fe69149f9b90931637a7185. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QM84B2596007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae56b13201d75d53ce6ae3cf6982ed522db9e64f80a99cb59dacc3852d509e2d. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QM84B2596009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a6073a88d4f70d76c1e0b93cc72cddf32b6680e22ee2a3252dd2d53afeab2e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM84B2596010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a6073a88d4f70d76c1e0b93cc72cddf32b6680e22ee2a3252dd2d53afeab2e. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QM84B2596010.