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 0x28aff4b7d697c0507fdf027c682956c414a2d5372b0301b2ac265eb305410dc9. 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/48cb4537-4c2d-4875-8c9b-842e0378e79b.json and https://artists.proofprofile.net/proofs/artist/48cb4537-4c2d-4875-8c9b-842e0378e79b.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 0x2590fbb522281dffc59531048b709fbe46c065a7d1041abd61375b44c0ed69a3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPW462458394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a95e934f1b467f689eb233b58b6dd6fb6190a1fb69b50bc80b902de6a0f01a. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/JPW462458395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55b33ec444e4c45b27f01cd31a769d463ecceb7e4761915240191d5f97ce28a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPW462458396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb211251d2d545de0a7b188d8a3ed1259dae8a73bf3cb3976f29afed4af694ce0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPW462458397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9ac5658ce929fe6ee86dec93958c8c1b1bdba4e909b39a9c1153a4b6dec930. 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/JPW462458398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a668b5d2be6a63d0682a0a7762fd9fa31d9375f9942099e36b3e955fb9dc21. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/JPW462471120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cccac1d9328f16a43ce7b1e4863e37dc432d946300c15a5b748ec64253559bc. 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/JPW462471121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadce41b911c714d01526551f64a6c1718e40275e1222db8a3d3ce9c4cfe5bf7. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPW462471122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614cb2b4f63a9b6c8b97b32817ac42faa2d8d2d57657b5c0b19edec9331e8cee. 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/JPW462471123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8a5827ca080956749f48132999d02614ec89835141437a2dae7785309d6bbe. 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/JPW462471124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7adcf9b32ab6bf21f6e2202deb84b27d79f291736e708cf2d14ce0087b63490. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPW462500519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c76e9d5d37e05901d3e98bab8e908aef7b59a0e5d3d8b50f595b8cbe0af1d39. 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/JPW462500520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26353276c839581c3d1b3dc5d6f29279e38accaedcb927697f15fb56bbc7afe9. 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/JPW462500521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa275144c53f47b3e835fa4ccd23cd4ef8d52ed71b8ebd9b24d7f350d098fd43a. 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/JPW462500522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c7a139da39813269cb0f88eeb3dc50a4cb0c04f22cd9c15df7a9e40685410e. 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/JPW462500523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01faa802290517261739ddd7dbabd489205269e9e59190ac70472fb2c8b1be7f. 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/JPW462523642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a082c5cd80807a26478b6854d63af9544775b8de73f8c300cdd639264b02df. 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/JPW462523643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1993f7d68e9382875e1151e05cd32dafe135785fb7e9cc1112077374e6acb68f. 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/JPW462523644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d9ece9e3f95f179e32b5e3b84c6da2ee03ac9c5bf5c7ae5a530a99e626a5c5. 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/JPW462523645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7a3d9acb56da5862808e2ec416ca55759efa438599254b8eb4a474666798cc. 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/JPW462523646.