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 0x6d505ef53ebe7f821bff1b6b809277666090c5f45a520b9c51f2eb7573b3e6f9. 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/8a34df92-d92f-4cdf-b522-c8510925a508.json and https://artists.proofprofile.net/proofs/artist/8a34df92-d92f-4cdf-b522-c8510925a508.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 0x9dd1436a0779b3617f08d09e71158a366f2f11f8e68aaf292d567ffd6d4408e2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US3DF1111399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7843e1a6a68a04c16da90ca7ce00cb4d22615a4c532b0659be30687dca0620af. 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/US3DF1111413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fc28cc3b1a564f4a236cad78b8e3cc6e933bf79c2f665e4167a40158eaf57a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCACG1509355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96fdf7a98eb9ab26d30aa17467de53fd0f02c23bed0b30eebf7f23d638fcbca. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCACG1509382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c188168beb013b652046888af8a057ba3a3617090c52f45dc24c6d1513a6db. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:39Z), 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/QMBZ91699696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a082cd5dcc386f4ca4b5faa741fc6352cc8892eedefa244adef3ac1c96546c4. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QMBZ91699703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe18dcec284c290f808b9e686ddb566a9dcc45b045512d061460bf66e1b7bd2c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QM4TW1706822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff25e7b3414998463d0f8d9ca59b997708e2e5e782b8724848004fbcbe0e977d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QM4TW1706823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e217446866040bbb14188fa06ac271088840bed07ed43deef60f59e0bdf1dd7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QM4TW1706824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a62dd261c8c6fdbcea23e9608f9391268de2ce4b91c367065f610843d4ace8. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM4TW1706826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a5f35facc57d6c67ac8bb3f02caaf6427bd8317190c0219a52af36a0e0dd7a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QM4TW1706827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d8a40273104f92bb1504da1d5a617a7eb440a7ed985a10bbfb2b3a4d94c658. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/US9CY1700877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5a9234dcda9f2398398436d3499cef8b4634b430d8686ac579c5c3f8238471. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US9CY1800207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca674759bd84b224a63e485e68c9c2f1cb4f72eb0c1c4bd33bc512f39d3f7bd3. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/US9CY1800208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db8ae25c55e2cd2f57d97ccb6a85cc31d9e57da47ea1205f4e9e506d1a05de8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/US9CY1800209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65a42b1490ac79681a796fdc0cc137f5c6b5d0dfc6634d23eb562a24b9801a5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6MZ1807796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0f6de8125553d6976e0579613ad9d08ab67f64137d0f6362afc67494019294. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T03:29:19Z), 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/QM6MZ1807797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279a7d8fc077ec607b49b932b176492c06dd89e844b406e65a59ed0a12ee3808. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/QM6MZ1807798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a70a71a63df949b87faa3af3b40704a1256ca25b8ecbd7276bddf55675c97e. 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/QM6MZ1807799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2289b65b542167681023efd42e9b79fb01bc1716bc48d106c25238f7e2ca8ae. 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/QM6MZ1807800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a64553648f7c7c0fc067bda650b91f8ff1c933d5e797f0ac10ea00fbeb6727. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:08:52Z), 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/QM6MZ1807801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026f1dc999f5f337e3880099051cd1ccbd4f9e18f52a66399ac0e3c843382459. 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/QM6MZ1807802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7171c264e164585fe930df9059e902834b3890d0c5b0848a47286a1781e5dcd. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:00Z), 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/QM6MZ1807803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4fe620cf2ba1c4306f7732e89db9a08a77b92b7f08bd563e73367984b80d7e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6MZ1807804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f6b920e17177f4139c6ab18352b090af54487d76786af1d24b4ea6e70cab82. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6MZ1807805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c64a755f925dea1f06daba88efe873f77550857ccc103f4c002eb1fd2b0e3c. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/QM6MZ1807810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882569812bcde1cc1509c234ee6cb70007947a8ebaf6c7d3fe5330d21a12924f. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:07:08Z), 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/QM6MZ1807811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0362d4b85f4e9a54cfd72b099ab2d5c8a1684040bd601fe5f09fa370d6f31637. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6MZ1807816.