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 0x35a3ff282e27e4f4176a89f5df2e5edce7a308091f0459b33c64c24ca8ae79be. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1de3de93-c199-46ec-85ec-f14e6c299850.json and https://artists.proofprofile.net/proofs/artist/1de3de93-c199-46ec-85ec-f14e6c299850.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 0x772d5b9ccb6584d8291db4252197428684b79916d1c1b3fdb2e86c436804187c. 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/QM6P42431741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b4afc72d45ef77eed7f5b383196d54b800b600e254d4b75e3a5f8161d2ac61. 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/QM6P42431746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32c3b6bfb4e79b80b1434ce000888e69124aba6ae4bdb810cc9dbb3ceceda94. 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/QM6P42431762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89bea586d56076d6f578637ced4fd67cb6d6cc3eb5bee0e8f59d9e59e76528d. 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/QMFME2366610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89bea586d56076d6f578637ced4fd67cb6d6cc3eb5bee0e8f59d9e59e76528d. 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/QMFME2366610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361680d7d8d76f817a16b7bed7ad0ddaad3380a087aee438091c876770efa8a3. 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/GBKPL2203792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0652deb38b24f34a10f48501cd0867758402510b20fdd2ce178296ee6522596b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKPL2205091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fc3e994e4664c0a9cce35a354b66351d128e2e7a725461b64c974a87215d89. 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/GBKPL1825142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d6b7c864369dec1e76ad86a428fb7932b9d4e7f4add007aa3db7dd803fa5eb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEVF11800436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f3c913946078a09bbbb6abbf1f03fb7e057b6caf54961dbe5ab1ff19385f7c. 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/DEVF11800462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9d49d4a65ba94a1ce8c0064e29711845118aa043236f48547e3ea5334313c1. 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/DEVF11800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b84c64fc22f77604cea86481f287919a94acadd6bb6eb780436f5ec0b24a9da. 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/QZBRF1876789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74682c63aa10a34a3c1c4474e849d583cee0238fe9dbe3a5313c0beb092b6364. 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/QZCE61809599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd4319905f75e1579123db05287b51ce065d8e42c6804b8443ab15f3257051e. 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/QZCE61809601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff16bc1dcff1b71d60fe9dd72298caf329d09b39f5a8d8a21554fb60c898359. 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/QM7282300584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0652deb38b24f34a10f48501cd0867758402510b20fdd2ce178296ee6522596b. 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/GBKPL2205091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba2b28fb3415ea3b191769aaee6b67a0a101f4eee76f1b982a2c0381e017b90. 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/QM24S2106216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54bff1d5d708835ea2c249041fa5e8c46b484fd691f264933c91284ab609e8b. 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/GBKPL1971108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f90ea63451cd25e69526fdaa94ce43258fa7f4693b9e4c000f97afcfec6930. 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/GBKPL1969955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f3c913946078a09bbbb6abbf1f03fb7e057b6caf54961dbe5ab1ff19385f7c. 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/DEVF11800462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d6b7c864369dec1e76ad86a428fb7932b9d4e7f4add007aa3db7dd803fa5eb. 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/DEVF11800436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4de8d1e0e4c4fba91832fb00bc133345799a4e1a1a5e7f7173483d40ca9c588. 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/DEVF11800407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9d49d4a65ba94a1ce8c0064e29711845118aa043236f48547e3ea5334313c1. 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/DEVF11800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287e76c8f375d6c0da75fbc83e9d35e53d32ec9a7a637d7bca0523ccdcd0f444. 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/QZHN81923660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979ddf5ce6beda3a270cc1a0b1d923305abcdbb3299dad9e8c0d37446196ba99. 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/QZHN81923661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a8077887cbac8ba096339328e15844adcbd7d5b019f69bbd7893d4b8dddfe0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USDY42518515.