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 0x75b0a51d80880928f3e148f94a9cb30b4a57e95ca80f02d05c9b740eedd53051. 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/2ee2a29b-a4ad-4ca3-9357-37c72e273e85.json and https://artists.proofprofile.net/proofs/artist/2ee2a29b-a4ad-4ca3-9357-37c72e273e85.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 0x2e88aff3fdd78912d395550c979b11bad7858675beba06fbbd321dec47e55e4d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN42477836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adfcd4a06df4d4bd42b071a0c7e0692e1e0d36ac02cd2d6702d7898781f46fb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBMA22401950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9380697945a0e99737d7dc0bfeeb465733c3f84b8b9f7f35229409a9fa80204e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBMA22400912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e7b1cec919420eb921955036ceed907e5333f08f30939d56f4fd432f6a0915. 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/GBMA22404306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae62fdf42c7dfce0771d9e2f4c1d9d3a0c4249b9742501c3014f6339eb4d8d7d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBMA22404316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc873eff844e078cccfd78ef78a61e54b92dd5629c6eed95aa20ac203f00dab8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:26Z), 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/GBMA22404254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087fba1c089b7e23e41579cdc7e98ff9ce713c45a93b55d655d6a60a9c34490f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:14Z), 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/SE5BU2452841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920ba4a3913328413903b78b79dadc3aeea83e6450fb51ee28da1bb97a1e60e4. 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/GBMA22404311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd952aee55a1556d4112632a08f392617b9dfcb03ee1e9dfef8bf4d3bde08fae2. 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/GBMA22404315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e6ee8126540ba72f7be3a95876079ca400e83478bd2e31600398b2f4c17262. 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/GBMA22407201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76990792d2da7c05eadad7da3ae2616b3044255129bcbfd8d720a754891014f4. 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/GBMA22407409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82406a91bf0d1c3c98faafb9a71b549a38cc87c9c8a1dd3efc84e51482a2ab84. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBMA22405980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8943e67bf480dcf6aab62e316b1608bf0655a0faa6a9fe8699cd9acc96595293. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZHN42479151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf4a37273ed9e7294b68ed1bd5dc6bc1ebac4b2b7ef0512d998fee7a2fdf240. 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/QZHN62425858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc766bb56615e16822c43b290a0f2512c7c802bcfa49df98487446e427064bf. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZHN42453709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c62ad75297a98c5854b84bb1646d1a91ae5b1032b6b8c2c76d60963e113e7d5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBMA22407270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6511a5e4cb6441f5cb1db100b6fa9d8d937e0f9194560ed0b77a46f583daa1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZHN42452290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106a39ae3c465faa70e17a4e122e4b5995c8f3a4ca096d76bd19b91ca04ebabb. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/SE6QE2404093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780d3a7a43b644c2b3e5cee87ed13b858aba52d7ed1f206af923ae1aed858d78. 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/SE6QE2404092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bfb664d2163c220b2f601438e2b1de9ef3582f146e45a47659cb1964e3ecb4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:27:09Z), 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/SE6QE2404089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdb9e6f2f758212565e35abaadded961e10dd508a18818e97377981097e7f84. 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/SE6QE2404090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2de15b12378c0667a3212dc06cd4983a2e01e346a28a7a892ef26ea59afb1e. 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/GBMA22360965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff76c7ce3be3d40a54f1c53261dfe4b62fbbd227901adfcfde637d6a71b02e0d. 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/GBMA22361292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28faa5e9585a79c5f86edacc36687ce9f68dac06ed8dad50cfb18fd410570fdb. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBMA22360955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaf8262d25b5dd8fd65222637a98cd27c66ca777f8d0484c5d06324720afa79. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:48Z), 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/GBMA22361304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167086bd5af443dfdf54ab2bda32e49e799ad5cbe1c658dd16bdfecacc60b586. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBMA22361003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e9b94a68e5fc96045a332a63c33634b60088101343ca62ac75ba244f79c1a9. 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/GBMA22361298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a08793e790a9c0e22618e321e5be43a16b7a4d26e463a8dec113138c8da0c3. 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/GBMA22361012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53e2792b4473723c6d797708b2b021c3c5540e428eac184da9d27e8ce5f26f1. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBMA22361293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb2ef017edfd6dae3a346c3e0f727c81def149b4eec6293000036f6b66c8e96. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/GBMA22374599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54532c6f43a9331e07ecf30becf2f849e9abbf1ca58ecbaf67a31c23fb72b6d2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBMA22374633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8287a23f98176877b1bdbef18b6620ea06d30e1d5b1aa33d5fbe0eb4cc3f7fd0. 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/GBMA22374852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8100f382dd2138182c050f656c3dae2f28b0d7bb36b3041d32aafbd1f06d734e. 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/GBMA22374850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbf71878eac4b32e4bd2ebdf2141e10d118a5e24fc0129581c852b5d31e54d2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBMA22374595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a56d7de1ffffcd4226888b1476d3ed8808ba3cf2d70662c659c877d660aeba. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBMA22374778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a5feff767d069e4ad353350cc001cd62a1061003536b3c05f44fdc45465478. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBMA22374773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1bc6be43d35d94786468628a215e27e7ebc7baac4a1f74a4d412e5b50666b5. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GBMA22374851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf995fa661c50d39bc8669de43c7dbbe8638281a250a6baa4307cb02446c3e272. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:49:46Z), 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/GBMA22374106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23fc2b0132e3c30a2043e95056c9c0ddb4b18fd97888a9f4d9c4e507d03129a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GX53U2484067.