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 0x57184c74535ecd4ff8643e13c82b43564bdac27ea69191e4c20f204410ada193. 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/dc0e610e-f5ba-4c1f-b79e-2d1e1c524422.json and https://artists.proofprofile.net/proofs/artist/dc0e610e-f5ba-4c1f-b79e-2d1e1c524422.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 0xbba8be4c94a3bcdcf516ffcc3973c9dd7579f27ec975abb4c3f26a0f184027f7. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:52:54Z), 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/QZYHM2402462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8b5100796a4d0c66e2caf9c602ff81b243252db596f2637b33384b1cc52e8f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:52:00Z), 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/QZYHM2406302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6538be16d1bd8a27fa2e08a3cf63699e0dcdd1b665795933c6e018316f82d15. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZYHM2409502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08bd0aa04dcd60d987d4239f7219ab7658d2e8f0a83c6568d58c2a6e20acb0a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:57:33Z), 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/QZYHM2418522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00349d56a206bb628150f3dd7174d4884acd2facbdc55ed68edd7dedd5c78a4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZYHM2418879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3754265dc061d70dc6df262b60f53c79b0b98d6a46e158023520854ce8ef4dc2. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/DGA0P2446580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24251228cd540d6f74d6a2d9c89b344da5fbe21b9aa939b7753ba8cf63f37f12. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:24:14Z), 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/FR10S2596136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d982341a8012a5380036dc98d43ce39bb4b45869fba0fd18b04dceb50e1025. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/FR2X42524360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e6d3455faa05a01685b1258e7831865330429b89da2a7ac8817e9003985571. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:58:42Z), 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/FR2X42524358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98314e4872fc1e60018ab28f8c19dd08fdaaeb4df2cc31c105a00dfb3a9b575a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FR2X42528196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d0634557a9235e836591ab36407820d335afd48139eea8687fb53abbdcaddb. 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/FR2X42596960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dd148114950bc9103ebb7bd4554a8d2e11d20d149f6227b863fdb346b8513b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR59R2519390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8eb03e2678d9b11c1772c1565b66cadd7e51f8114893255c8ddcda8f0184a84. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX282507528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0dc3ab5c3a10a8e47b9b9df2dac94e46918bd47c48cb3976e9d6788936528f. 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/FRX282507526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce2711ec8573059ea8b17b8efbf71fbde155b08fc8fe0e4a4a8bffe734e57c8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:57Z), 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/FRX282510116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13983ff9430765ccbcf5c0552dfef94f7e7f069535d0cc2dd5b1986ea778665. 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/FRX282510117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5f527babf147d7fc979d3c684cbb9d4032847ddff7429ad49f585fb82e0451. 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/FRX282529363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01411058fbef85c90112e76e5fbbb00b6a82fe09745d712a6019f035ae2da63e. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:12:09Z), 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/FRX282529364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ed486ea584b2b8bfa93556177b6223079724643b7e9d2cd1c010d18ad4c979. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FRX762508187.