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 0x04fd3ae2419fa4ab87c42b06decea706f1267597f999605ab417272ef69605d4. 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/7bd1eb3b-e40f-4cc8-aff7-dff49c45346a.json and https://artists.proofprofile.net/proofs/artist/7bd1eb3b-e40f-4cc8-aff7-dff49c45346a.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 0xa960f169084bbb0b0f41e30a0213834081680ea9284b2b2e97d163bbc7347d61. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBSMU8479012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb043ce8c8b75d60b4ce03ae7c559373c05891fa8d6693e66a949cb3117b37f4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU8479014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a151d51860686a2ccfb2832235a39252548ad30efb521abfcc2c6194742e15. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:44:13Z), 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/GBSMU8479016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f43b5d11d31a1f232ae8c48c35535a2bfbfdd36d5d850f0f0590784926d7b8. 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/GBSMU8479018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fd9db2ebb3de68ef63123081b1f698ac18ad0dcb117924051184daf7ccd60c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:28:54Z), 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/GBSMU8479020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe274a702689140ae917cedbc18be4aa84a60aae2dd51b4d0a02cb59c169db2d4. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBSMU8479022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a31db22f6484582daf41511b1bdea464b8c43bcc05548d45f7186f3596cb64. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:53:33Z), 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/GBSMU8479024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc1181d1a9b5a691cf8764136cc921be3d781e41c831441a6847221385b4f8a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBSMU8479026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af81b1e0b8e8815f77bf7918890594baea5db7d533bfc8476a9945f54b7de69. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBSMU8479027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cac031b4920175359e767982246539393bde0eda8a4772fa0c1c39dffb2c3e7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUMEV2340861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76479d34456c2d49e38396d12f2f426e3fbf0b58e0f8a50dc81d056d291daf96. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUMEV2340862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919346f19d0599bdc7e8718fa2e7f5a9f12dc21b30d3fc071ece87fc03a229cd. 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/AUMEV2340863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c14c86ac7cbba367f796dc966825b701151a6f0dc084477ae205566c054fee. 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/AUMEV2340865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fa55bb2614fd062ccd67db90803931bb7d406ecc9dd5eddd7ac8f6d996b6fb. 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/AUMEV2340866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3af4df42064d519b149cf02b338713265a720026bb34d6b6d080516a4a7cf46. 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/AUMEV2340867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d0f7a9246600e40a13627167aee721640143859ee33204066e6a7fad3eb7cf. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/AUGBT2351756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cf99a12d569ad496e403bc3d81d64cfb436bd916a7bc6d1612fc26e28ec886. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/AUGBT2351767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f425a4c9e3716593361205b1e21f12bea7cd7083dbd3c8301ea4294017b8491. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/AUGBT2351762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049bf2dcd395fa626dc9d4e10c257f5d623d9ab80e7cc595a88b17b688e410d9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AUGBT2351764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9419425f98015153682158cbd70c0f6387c633348525c427864152c5d209f1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUGBT2351757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4820a4ac0c0d1c8c6ef2ffcc996b03befa0de5cec16a6f4ba8703b2c97fcb164. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/AUGBT2351759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2823dbe80a9f0b684a08da1fd6ed7471d548e79c00e8b4aa7d93549852c3d3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUGBT2351765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2159ef6651fdd917425b84c4556aa746fd79d435cb9cd38a95f57518efe02d73. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:35Z), 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/AUGBT2351763.