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 0x1254cb17b37f4c05f315a1b0faafc1470c933c7a02a20c933c34db6a3417b4cd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a67235b5-72e0-44d2-8b5c-540576ad7fca.json and https://artists.proofprofile.net/proofs/artist/a67235b5-72e0-44d2-8b5c-540576ad7fca.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 0x2103bb65aa6d00fea56282ff39f05cfb10e6e0cccaa5c6e2cc4694a0e025b835. 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/FRX452149185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520ab7396a3660bf3c4dc711f1d49ab9b9f4305acf8ad99695cb7365ea927557. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:44:16Z), 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/FRX762189446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c601b904d2dc473d5f1c0872c579c18a25cf2e3fcc007477fa2c56192231b1e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:39:30Z), 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/FRS182110340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf994c16b7e22a8919d7ba7ec27f382711d0952e548aea8fb8e9b1e40b72599d. 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/FRS182110341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73400d05115dddeba1c973ff76095e4c544f91d3e8ca10ce8cccf16019618e6a. 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/FRS182110342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9820b36da3b9b06f4bc6c25cfcb36f171f1c8a5fe5c4981abf43047e0eccb798. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:40:58Z), 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/FRS182110343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb6e060389c6a3e0e44e5c359493bba305e33bb0a967f930a892e9b99c2df65. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FRS182110344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d26443f87418b81b72e399ea3d32c8706140220173cc82bb4bcd10d2cbce1b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/FRX202268300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a7851d314545b902ccb17e908ab5ac65ea22dc54c243eed6301612a3a4089a. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:31:28Z), 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/FRX202268304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd404d42727e2648414a29c42745a10cd20d003cded19edda3b67fed327c23730. 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/FRX202268305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a893dd7f68ef1a3291358d501b6be11db469adc0293e87c7cbb4c33d586b3cb. 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/FR2X42347090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1de5a00cd406754b18a5e3463a30230253fbdb7258f81f90fd8983e5b6b80d5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR2X42347091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd757e6266cbc2a3583e28b874cb734ff9a67d033259a18f84e8ca185a73e0500. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:29:59Z), 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/FR2X42347092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b67dbf83c84ae5f2697388c51020a6d02c7486fa535066756711d82141d6ad5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FR2X42347093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9c9498dc26a5af8a2f496c6fe7526268af68be359e998d0c4c09ae5897ab95. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR2X42347094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ca875a149caeca6ac1337ef0616103dfaf9a02b01eabd2cc01e29ea1bb7bdd. 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/FRX202357861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd060c087543f08fb9f0be50e5fb304365ff01d5c3214c986f2bea592ac7b59. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FRX202357863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c2ea6c11d5978ffb46681393c88bc25eb753f863861c27012dfbb7b67ebf7c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX202357864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6777da803b8102b67d2dee4605756098933b832e8a0f3ec62fb961601e10dc. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/FRX202357866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002f792eee06047ed79c8ab1161f76604eae4fc1e9b5632b07c4cd712c30e7b3. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/FRX202357868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46a1273b09063ba71d7d1a1de3e96434cc26e740005eefef643627aa6326f25. 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/FRX452385943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fb6490d2a5b4e0b7b20ba84811064e25b943b1f4ab2c344c8cb85b40623d65. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FRX872387275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a1e199a9ba931963e40b84a4e579c85b894228cf9fc4f7cca59ee864f443f9. 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/FRX872387276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83627ac887e6bd7eb52e446aad71cc9d527023ebb292b0fb9ff5464622cd8c9. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/DGA072350788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d0d83c7883a0782097cdf9d5dede699a30b2c93641c3f8fcdc87c644cec721. 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/DGA0P2359704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199ac9c07fed8e36846464fa087a7a2eeec9d0cfb9fbbce9fe948f1718c1f7b5. 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/DGA0P2359706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50ccba81265d3f20a017404e0c730343a417549b1318168cacbf6442822b33c. 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/DGA0P2359709.