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 0x6a6285cea483bee6ba013242c22b74309eaa223c9970f290ce675cf5dab7f9e3. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b34820d1-c823-47d0-9cd3-00cd05ff1cd7.json and https://artists.proofprofile.net/proofs/artist/b34820d1-c823-47d0-9cd3-00cd05ff1cd7.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 0x2d304d73e4fbed58afaeb6ed4882e9d820a8e949c02dff506d5c3acbd782f7fc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAYC0003030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe002efa776d68e5bd743efaadfb4f40c738a4fb25448d2aa69132bbc80507a5c. 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/GBAYC0003031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103dc026c46ade3e5b3e045a5bc49efcd3c32e274f3999d7607cf6f8282aa520. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/GBAYC0003032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef16118cede812fbb475bdc6d737f6549b616115c846ae5fe4ab6bf60f3e8ba. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBAYC0003033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b267e0f9b375294387714f1a5a6864d681d0e9b4df785b164fa627f2d07667. 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/GBAYC0003034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d070553468ef79d138458dd753fa4ec030711adc64fd94c3acb3669cde93cd. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/GBAYC0003035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc6f2ab42ec37223018472481b143bc2ceab9fd542f6a193acae396372db9ef. 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/GBAYC0003036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4feb345aa8b7008da59932bee4f966dbec9149ccc090ce265bc8ff8e3f8393. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBAYC0003037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab309b6dff24dfa9c2f3b4823146e76d3e74d7a236331e7754fbff529e3441e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAYC0003038.
La Passion Dans Les Eglises Orientales - The Passion In The Eastern Churches
Tishbouhto L Morio - Gloire À Toi Seigneur - Glory To The Lord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fedce2c4cb64430604f43ea2053877bf793f28f9a8bb73a2bb0dcd4c7569c11. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FRP330800170.
Halleluia - Qamal L Hayyu - Le Vivant Est Réssuscité - The Alive Is Revived
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ef7685b5e397dade0052a35327fef50a89344f234db076ce314024c851663b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/FRP330800240.
Alleluia, Tropaire de la venue de l'Epoux (Lundi Saint): Alleluia, Tropaire de la venue de l'Epoux (Lundi Saint): "HaHouwadha-lAruç"
Chorale de l'église Saint-Julien-le-Pauvre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8858f6e4dc01610f78b4e12b8d30847a89e64c28ab730ba22e7997ae8e9ed6e5. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/FRZ148914010.
Ya walidata-l-ilah (Melchite Sacred Chant): Ya walidata-l-ilah (Melchite Sacred Chant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e21acc15b58b8b0c24b47edcb6c59174455dd91ad19264fcc11eb7ee3cde86. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/FRZ149311020.
Kondakion de l'Office de la Nativité (Byzantine Melkite tradition): Al-yawma-l-batûl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743b70a5791d35b1b3205c669ed11dc5c7835f1ddd77085ba1bda848386465a4. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBAYC9902106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd02486fd5d323b820938364edeefdadbef65fa864324fc59adb6d0337d0515e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBAYC9902127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4a2baa33c9d749708199c512c045320c21aafa4ab430ae7cc78686355420bf. 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/FR59R2246763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f325b2dda918db27a67ee91d2c6e37f35e71df16a842d220a89a8d9e88e7f1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR59R2246774.