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 0x98d7fcbf47abefe21b9803eb2cc7f8dbd5aaa40c375c8006be6798ecbf9b9d97. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29f101ff-a573-40d7-bdf6-b1568a9696db.json and https://artists.proofprofile.net/proofs/artist/29f101ff-a573-40d7-bdf6-b1568a9696db.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 0x42d2664e50d0b92fea2fc828d3125b57f8bfe8edb3e78c596b26d474a02da25d. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GRSTY2201515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35f717f62b667f1632d82fffa6896b2fe749e450d81ca6f4df05be2a8758431. 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/GRSTY2201516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcf082aff5d46eb06d6ceb182b01c5eb07c39e809ad25dc77cf985087703aa3. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:17:14Z), 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/GRSTY2201468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b489ea823ec11711d3053bdfbef935e4932dca07d49ce1e099851eb3abf4049. Chain 2 (Bitcoin): anchored in block 957835 (2026-07-13T09:48:24Z), 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/GRSTY2201469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1624bbd961cc77f234b710b3e20c8465111b2a4e08625dc245883808d253d6. 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/GRSTY2201471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ad8259f943ed65bf9295dccb5cc4a56e5e7c9b09da7a086abffa4a3cc960c3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2201472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a0420ee38ded9d47d25a7870ebafebc28bc2e5f6bde95e3241e8bd4cec0f03. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GRSTY2201474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6743429f6fc8a5a9404ea102b0b0b1909f9bc403af0780aa005b36c9896726b. 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/GRSTY2201475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daf6e916bd261e7b9b218f2c2b2366324eb72ff9d2b3f8123c6b7defc6a76ab. 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/GRSTY2201495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2af6cddb0a0378b22f6e8d6074df40abd17bf498100b0cf633212b2939056c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2201496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b00ab305a7648af237f094114cc311343c7ea2c4bb45a4f2602726acd566e9. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GRSTY2201497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e2b2ceaf52af8b8e0e8145d58325bf882e0bb6b14e8d988eb765ed042172f0. 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/GRSTY2201498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2dcde7eec38781ae3b90d275b56b182eb261b6e0b1dee267bff1f6b7682a8b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:33Z), 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/GRSTY2201499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8aa228bad37ee74432ccc3c4fccdd1cc612a11981df1e4d2e56f90fd5e96316. 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/GRSTY2201529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785a83d0bc6bd4555f8347acda058f23c2f961d23379f1e3fc4042fe9740849a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2201479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6d00f1d680bd142a65c697dab4c7474954853d8115f419871cd2465d90dcc2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2201480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7c7c8967d9dbde11c0d12557b0567380276af835411dc19806d4fe0dec3a76. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GRSTY2201481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66eabd55dce6340648dce70f56d3e895dab114bd13eedc0ae01c354d11117f5. 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/GRSTY2201483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d066add1977691730efaf2da809443628f85c5c29fdc75cc7985df29fa01ad2. 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/GRSTY2201485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfad454366cd1d2565e9a0d41e491d11364f067d269f6bede5d5a98055448c1. 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/GRSTY2201487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3df5d9abf6af0b52c1e8aa3549641746d60c52c5801004d77fb3608b3b85d6. 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/GRSTY2201489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8408efd63533fd4afacf9579d8f304486bc1b8f52ad8959b1a03302e0703ee2c. 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/GRSTY2201533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b975594a30952c04158b281c8c367e650bbdb88817e401a40d92cae9a5bbe97. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2201536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9fe503a7b16144a20fc64179b94aaf95fe74ced48dfd647fbd25a9b72e0f08. 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/GRSTY2201503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89f78de95ce9ee63bdd4507c7dd49948ed73e8b0ea8756589e52cf176ff2660. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2201504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25db9c69ce9b12834256bd9b049a43c2da30ca4e711949089b2374d47c2e10b. 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/GRSTY2201505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e75c75ed43d9906648e6733e441ac6589ad2cd8228944f67cb9e6e113ac379. 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/GRSTY2201506.