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 0x044878431da8b9546ff342505ed183ef8dd8a85407f5e6511676f8f04ee398f2. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac444a91-07d3-4261-a104-b2e00f222ab2.json and https://artists.proofprofile.net/proofs/artist/ac444a91-07d3-4261-a104-b2e00f222ab2.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 0xd253d7512b2a5cc1e4cfebf43303240ee537b853f2a702d57b986641e603294c. 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/CHC381700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf213e8f5fa92e653abd7eb575d82127728b820a6d3d138b7f3490785692163. 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/CHC381700085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c243b0460eb4cf622f2d7f5730a01b594425ae9e4c0b15bd2b8597b237b7149. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CHC381700089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b0e1f0b758702e686f9a6d795a4ec04f706ba0fc9366123a9839877be57306. 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/CH7812411497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f3f9e03056a72bbfea1b8ed55f12078636c5bbab8b819712f2f4753f6b148a. 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/CH7812417059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816ca56691c292241925381171cb1327cf8d8fcd0e138e0e57d228dafcd33038. 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/CH7812417060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f91ad3b947e068a8ea0dc25cbf18b4dfb276bcf33cabe371536af957954611. 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/CH7812417061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e5a22518b86f8dc52375c213d5e8ef96044de572b4d690e9b3c682a47ad23b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH7812414732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c342e5a59992e8a726bd256bacc1a45905b793459790d963aaa96ec026a5d7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH7812053976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a21dc664175af91cd3899f359fc82c8b45bdd0000e01059ed0639068862abb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH7812053977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc04ee3352afa0e9fded2adc7e7045c9f0225b4e3272bd5238bd1406d391b05. 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/CH7812053981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab1e650b822557b44bd1255974aa26e81d6d47616095c595ec63e3faa8ad9b0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH5170900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdaefbe00347e23f9fc8115cd581db704a164de464ceb35f74fa52cde47ee70. 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/CH5170900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2560ec8943ed2b6f212c4faf026a685a7433d239ea18b2d39cd2959ff801786. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH5170900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7318fde0d7160599fc5f7ec82f76de0cada1edc0b1bba2bec1021d952d4520. 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/CH5170900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8423bdb7c5974769c81467b4e86a6f624f4d23ce7a9e86a71454b6220984c3c7. 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/CH5170900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b0e1f0b758702e686f9a6d795a4ec04f706ba0fc9366123a9839877be57306. 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/CH7812411497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc04ee3352afa0e9fded2adc7e7045c9f0225b4e3272bd5238bd1406d391b05. 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/CH7812053981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0fda7e09096f9c1dc0e8a240d394e9ded1314b2b7b38ae133ffcf5db728661. 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/CH0040904500.