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 0xa65f5c67380ad3f82c274a08f60b207768adad5e674ddf44bdc357fe46470a7f. 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/cea37bab-4c0d-4eca-bc38-40eba4369d67.json and https://artists.proofprofile.net/proofs/artist/cea37bab-4c0d-4eca-bc38-40eba4369d67.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 0xf6cd2420e62d6cd45bcbc575c75472d4b40b6155e22aae3f90aa6fc35890fa7d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZ762564034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865dc4c5e3e8cdf2ffb39c0d0dfa8e29e7fec4994fabc2424350799239f2c29f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ772571037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc357a41b598d3d1b58fcfee37901add0bc972b2721bc41d26e7c0d25468690bc. 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/QZZ772571038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0570fd5ed8ea6156c9bbe548d5d5010661714d31d2843541c4bb8c10a6baa2f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ772571039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce870d574b18d4d5100883b27b7543c887e10d6c029e96ddf0d98a615a16bc5d. 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/QZZ772571040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b5946a17a621fa2c48719b61284f6368538a4941245ed3ea19938fe8f60162. 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/QZZ772571042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a346f930555f25bdf1ca5dea6130d913befb833522fa30b47620cdfdf87c1cb. 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/QZZ772571043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0d071b22ecda5113717b151734bc19ae5872daf5216b81f771ccf954702a44. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:55:59Z), 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/QZZ772571044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfd4dc96ac8e474d93faf6c2aec4f5959346cbb42b66020ea01433d5e887948. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ772571045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59791fecfa18db344cdd19677561012111a96ec20077a9e9fd5b75369cd1db80. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:30:40Z), 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/QZZ772571046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa368de93db7eb3342da408165e8b90cb43e62d8383f3ee2b200dc79859ca7842. 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/QZZ772571047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b25e7d64026fe19cf55f3402562fe329bed62288107b08541ee7494352d6c3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZZ772571048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68712c73434a13f66e4fb8989fe0454859a4eae94e90fb35c86a74fc48c3a245. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZZ772571049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee137c6a832fe46d74d2c3f26a529f29bbf882fc5fe1d2804814862a0b726d6. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZZ792540905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde026cf184fe943f3770d0b3134bb91140f81886c93aa83bc04c08e375722672. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZZ792540908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672e97be2d9fb9ddce7270b3211622b92e0d0e903ef3b816e26f5495806dcb7e. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:12Z), 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/QZZ792540909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00136f48f2fc36b2ed6646ef6efa10ef463c7e135db21a615011b2c2eff6bc01. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZZ792540910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde341331267fd1ea2bede5524cd1dab095c63924d41aec5d11fbaff1cea9ddef. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:29:20Z), 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/QZZ792540912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844a2cca429a8186199c0cd858602e8d2e21e1ed630f0a223a90b5f223eacac4. 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/QZZ792540914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7a4550765b2576624d35e0687ebadd3f8f66136c9185ec86a12090fe799ed6. 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/QZZ7K2543809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3ba90909c6eab5391764c79aa7eeb20b888f63f17e308e0ded02dd10ef6fcf. 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/QZZ7K2543810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6848c7a0a478673aefa2282b2b6769e345e640b2ac875933b7f32f979d65e7e4. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:58:17Z), 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/QZZ7K2543811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bd76a673edcf8a6ba1c324eaba575a33a0b5d0cf49b7961c6975dcdb05ffb9. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:50:43Z), 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/QZZ7K2543812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896ffeebeaae4b269fbc2140377bfd1b5812f7f00cdd8196ed47119485f38a8b. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZZ7K2543813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b61e7ed326c68243906adde49310270b87923a8adec7a00a9be9e525bb775ca. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:04:54Z), 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/QZZ7K2543814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d55720a624957252401118d91be215efc3fc6a61c404b0e45ff677f2dd38c80. 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/QZZ7K2543815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3451d34fcc8014fe962e0887ac03f6fdeb5bd6315b3dd5566d0a2ba134668e62. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZZ7K2543816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7690cdafc3a2b356e9b0617624dcf0f88e9cec3a63beb6d84075706e97d478. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ7K2543818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba28c2de7db94f89eeb1c9e78ec1bddbd4df1a2b0912e8da0267c26f2facd206. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7K2543819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057fe0b6a361e955e6b2f63728435f64c13b3fdc61a3d142e27ea935e49c6c26. 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/QZZ7K2543820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047110ce3d29774ecc6d6b6cef64595f4a052d267e8212c06c1f6c51ca699542. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZZ7K2543821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc971263faccd3b861c4d861e39610ae2e974576966600b7eee01095e9e88877b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:27:26Z), 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/QZZ7K2543822.