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 0x357cbe7735465de67d3750e39ea69c934f9a05fbb9ba693d92d582b24c9d163c. 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/b49ec30f-6109-44eb-a2be-a9e3b681fa56.json and https://artists.proofprofile.net/proofs/artist/b49ec30f-6109-44eb-a2be-a9e3b681fa56.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 0x2a6692699566ac0c543a6fe3cae47c09f803c3541e60ef0e09dbaa75dfbf7c40. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USJI10100293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf81406b382a8b39dcb0d7bfcf0c529d688dbfe792388751ee044a7b314c4fdd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USJI10100294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe707ab687daef69b8d0594ee3361c62069886ec0ee152bb6b7a7f9e7530dab4c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USJI10100295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1431dadee5c9c4959ba7f09024c11833c17dd24cafc3c627fb6e1b329ed3cf74. 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/USJI10100296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b899bb58251648167a34d392db7c7004b54fb59ae978149067eb02b73703389. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USJI10100298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd00550910fddd8ecfa548b7f00022b6dff43caf796018cd71e777f99df0a55b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:29Z), 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/USJI10100299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a8813e3e90a5ecbdd77c7400b5fa4bd4eda48387ef5ec7237a45fe70a39aa5. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/USJI10100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82556dc84082ab521f21ba8cc25b9992bd6c2af4d20129558151e85fbe49843. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USJI10100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5e923f4a3bcab28b8afa3a2847e1da3ed309a3c01004b48befcaea483fa6c8. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:47:08Z), 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/USA290504802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3b0a9ef426d60ee0da9235413719fa549a5c62f9cb602472d9dd8010fb6553. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USA290504805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8150a2d8d41f86108da463d233b1fe9b6e83989310fd4280b772d0d9d26f6eda. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA290504807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db39191bbbeebbec961083c19bd65bd7f96afdb2a824f8f96952c8afbffea98. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USA290504811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac48b30b52f1ef564cd8e651215b884f03dfa83e72451f0cae47ecd991713a5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCACM1624437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e82acee51c3e5ec1c90327476aee2d10471da0f852d4484c1fb3f0e9ae16e8f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCACM1624441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be600fb5948e6bece1e0cafb2349db7b01775084d9ffc8b4fab550662d211c9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJS2585737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6598eec0a033e07fd498ece8f6b5ce5117f594574884655a4ec031b4d79342f4. 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/TCAJR2594073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab35fde26148820168db01534ae07e9bad984f3c146d4939c07cced5e16b8d5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJS2594084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8308eeffee083a81f4a7d5f646db399ecf345fef692be75166770ab361fd5cf. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJS2594090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57fe04e5d6d38692fbb133f1a3b724f76cef5157951212ead3e2e0df83ed316. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJR2594095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5250c0a278c8815a9e17206b1cee9b503db8fee7f6997260bca630e6f6914838. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAJR2594106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afce73892f685b799ed8c55146be4406510eeda57c57a55dd0c4f2209f5fce5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJR2594111.