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 0x355bb78a9f05ed2233beac96916da1fad459c399e3db29297bd586691a25fe27. 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/a9cdbdca-21dc-4b9b-a876-dbefff00c9e9.json and https://artists.proofprofile.net/proofs/artist/a9cdbdca-21dc-4b9b-a876-dbefff00c9e9.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 0xbfb0bcc8d85fac14afcd83be5dbf117d298443d203d31a71896f82432dd0ba07. 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/BXKG22401293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa437700b8fc5d31990983b459482dd1a5d85c8ee02beeafb76d17df3ff9986d9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKM2L2400198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c150848f6b1136392aa7337d0d62ce1953346a2d40e4d2c7deb4b6eb15eab32. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKM2L2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c074439cd4e80a113a0d84458625365cb4330a0e2e8e97734d5be92dca5556. 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/BKM2L2400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8ba6aeb27dfffe4babba37310f880c013fdd78e9bc567f0a0adb0a1d6fc996. 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/BKM2L2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d6b12dc9357b50f16b5b6210da96e8b840f929b4144bdffe04d522bb9f1d26. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKM2L2400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2c03ec1d7d52f86ea3b71c23a0d6d263a86f828d1f94355c5ab70704fa78ce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKM2L2400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b510e95306330878263b25f0f03c34cf10a3d4635f200d2a774e8243e3dc88. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKM2L2400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5cd33e995ba7ed46b35814ae48785f53aefd328d7bb0427dd1a6661998025c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKM2L2400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e9a2a574a5449859162613da5b3e495417b602153892a65fa907d08bf61e1c. 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/BKM2L2400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7064ac9d9c065701867b3c4ab99e6e32bd0f100086542eadff03def90aba5be2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKM2L2400228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a4066475e29339150982ad98ec31e7ec251c488347dbe98b2e90e4f6d43675. 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/BKM2L2400231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ef36aa53f8c8cf4d937b0c910795cb22be90c0fbff77c24614c15b308462f0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKM2L2400216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8c9bf57ae4f5c033ed72a33aa198ba1131c02185ad2171fe2e92efb3df4788. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKM2L2400234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093d08307ab793af5e56a4b5351396c9906a7fb31cc4233f9104ae242546903b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRWMB2300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fac04c838a317836bde9e3f39eeb8debd5fa15e156902b5eb9cbf04fe122ec0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWDD2287294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f07ac8bead207ea2193dba1c0dac11ecf171e9c7808aed47495ac3eda5cb9b. 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/BKM2L2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbafc4b9198115137149f50f9d1f35597cfe598135c9930b98e8ba87cb8fbeff. 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/BCM9A2200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93af871415a0db7aa50df9c0f23b8ae7043fa598a8c25543f93fcc2683c0f372. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BC2TS2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e767e4f538591c4ad0b3d145cd50db5178d243a901432ff4ca78bc8b05b6c5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BX5UA2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47025517b82b919f40b5a324fe7a0f71456f65c8b8a5d01436216807689e8849. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKNDN2400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68855cbe6abf346269260263d9ee909513893c1910367af7c05b7af7fc8b5d84. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWDD2287269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68345e42f6943d3df4fd44d58b5e1670be3ea12c027b4680d33f619c8bf2059e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d2a23af7ba5142fa4bca56b33a0fec258dbc154aee3683ad90931d986cfe4f. 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/BX7P32300639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fdd81b9cb7dee3ade9dae886409014e6ec1743869fb74b3a91dd34a714f501. 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/BKM2L2300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a03aed7162ceb15114b965bc5d5ba3a26b2ad69a145f88cf4595731cd4db094. 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/BKSUV2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d31963a20e28ff829f338ba4ef6ceb36bcc4afb076dcf22adc02f1c424b0c10. 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/BXIV82494381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a44dbc7a9e9741b2941bc8de45668a88016a1b0a07af5cac2720938abef43bb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRWMB2300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7894fdc4604961b78f9bad9f3a54db380f72405f45337ae5c2a60b09637873. 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/BXKG22400056.