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 0x24b67458bb206bf1b1771bba3879eecee3d182aa018756a43e8131aa06fd3b53. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4815d01f-6bff-4fdb-8826-9d3e5e21e0dd.json and https://artists.proofprofile.net/proofs/artist/4815d01f-6bff-4fdb-8826-9d3e5e21e0dd.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 0xaa826cab89816426b78fbd829ff52a346386e0ae3c8d4c23d2d3843f98336575. 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/JPW462417201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd3c802ce8349814b5737dbe585e872207936b6067e09abfd63e8c49d5063be. 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/JPW462417202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3673a04732138b02e7082d4752fd9ee40286218078dc0e699fee37827677c3. 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/JPW462417203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2f662341097bb40beddd105dbfe7ecbb362ca18d8f00a22738f9d1d810f87d. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/JPW462417204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15328805d2accaa8715060154fd6a7c98ca1c83a11575c6b11be4e19251ef42f. 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/JPW462417205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ece947ad8788f535724f3289c78fa1f5a7d30e0496ab1f4a2f27e61a539136. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPW462417206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59993242682f43fe803d79fced8682223292754c02c024acf27e305f983fb4ee. 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/JPW462417207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4a5d7e48dd702d450fcd40e278de5ebdeb9ec876bfc08c3f035b3951419b25. 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/JPW462417208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a6fdb552f1d09115114b09b8dbc8faf570df84711d824f6c709480302d1a53. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/JPW462417209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b2c8d96dd8b7af799757754c2d64f135ba636a6c5c984a3fba606a966f928d. 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/JPW462417210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5510402d28b2c7e1c4923bcaf10b9d7cc5bebb297a3f4e015096a63864dbcf6f. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/JPW462418765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef6aaaf3498a7b06e1a6ef2dac8d07741a4e2a9eeab7561ed994ae2af4e073e. 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/JPW462418766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480f4797a132be2115de24b334fa90b05016ddaa55c12d56c408a54fbea2b204. 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/JPW462418767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456bcdb5f961f7337c8d87e1cca8249712430e74d970d0232245abbb9cb6b61b. 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/JPW462418768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482460c03c644af9a89b64879f7efabc3e3380b0ffbb88936d0e678663f04d75. 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/JPW462418769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396d578d3e6746643302a3289e9833c56763d5a096da4d88a2848c28849fece5. 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/JPW462418770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8d9b88db398d1db39db0f1177bba1d98c059a692e685f30bbdd923f37fdb4c. 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/JPW462418771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff66e0f03b27a055a37ff7d08d3725c529980ef828aa5e4cf66bbd0d5523ce1. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/JPW462418772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b45fe66adc9df677020570e89b37e5237d8d31426e5d22655dd11cca85914f2. 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/JPW462418773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a667294e8df4791a470d95891a857d8bf8914efdfa6990df718c6611fddbec. 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/JPW462418774.