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 0x14c84db443cef2f4dcc7cbccb9db3fcb8d1ad034a0fcc24d11b884a8b0243c81. 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/3b8da2d1-39ee-4bd7-90a7-2417e1413d10.json and https://artists.proofprofile.net/proofs/artist/3b8da2d1-39ee-4bd7-90a7-2417e1413d10.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 0xeef1bb363c057f6e4703d9a1ca4f5347b6bf5570690aca03d23047e61078a238. 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/BRCSH0000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34400356a771c1c4fadc8758cddf2ae13cf3f80f15e71599d41a18571a7e568c. 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/BRCSH0000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2482245256f8ea6d0823c0059c650d30ce1dc27c54ae71b7b49b6bcf9041111e. 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/QZMZ92336687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d0b76a11893097ab327d6c903f0ddd0ec32d4464e2a10de129a167a5aeb756. 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/QZMZ92336691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b54ca13123a661648264ef644e9e57aebf4b62557f756f6f514611b0488c0a2. 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/QZMZ92336696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3a520566dee35d1c86c8c63909dc6f46562f6e12f5235384c0038f50d6083e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/BRCSH0400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9df6073fba80bdd2cd5cada496707b16e833ef06d3c4b8846102b23d62c469. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:54:10Z), 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/BRCSH0400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe26d088df486bdaac6589bb87d7f633a3e3624e76f1aa1da63e9325290929d. 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/BRCSH0600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22130b0bf2faa8dcb8f58c57b2f3835e70ecfed4297322db764f993a705fe92e. 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/BRCSH1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684dc6d96074c82c5be6cf30486516a4edb5d474361d37fb84442c5adabf1a2d. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/BRCSH1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3b72ba526cfe2db3da601cd17574c40ee957346b877b738213ee7bd8b6d70f. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BRCSH1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de22366ff1e9d69b9c199b8acdb35de4495ded65880a246b868b370c5727492. 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/BRCSH1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c9a5b7a32eee48f5c68e12c3c93e2042d6f852b56b1889dd4ff4847752d663. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:32:49Z), 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/BRCSH1300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089e58be3e967251e848592108eefe407cff83b18dd9118a8c0f7e068a692341. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRCSH1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f530b820587fe4eae8e58c2acc5fdeb882ed7a58c87f35ef58042e4f00d9a96. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:31Z), 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/BRCSH1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505ddaa88b67a1a117f1020ffbcb173064a4567facbf58e271c9003aee8eef25. 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/BRCSH1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa820e0918751a5ec7714e4c34f3ca8ea08b892ee095396c1ff4d18b67f7bfa44. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/BRCSH2000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0ebc1b684d69b0dfc5fb7fce9e188d62f7604419bdd6dfaa2eb36e1d8d8d36. 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/BRCSH2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b420165d8d4b20d7030671cf05f0846c94c3f01fd5a622677a3204065bfbf02. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/BRCSH2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f53cb852b6e7cab6e631d7ad99a705e32916085e2079c9a0ef2c9021ddb4d60. 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/BRCSH2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaca41c71c85b5ff6ffcbabf165471fba2c6d19bdf8a5e748707c55de2cc874. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BRCSH2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dca61cc9fe3ba9cfa6f70b183e73f87a75a3f62be36da1ea3cc9565ef305144. 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/BRCSH2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946ef011e0bfd706679e74104d7203de2523867ff02480b2ae65154b33cf1db7. 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/BRCSH2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdc8e0a53d80f34b4da2b50582615d7c012766817bf4dc48db43845077c2560. 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/BRCSH2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd208f3278ad8d6f07bcaa874bb2d724027514c447eb5adfef0b32aece65ddeb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BRCSH2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c34c34f6356bef08a8f6a6858f072166eacbd95f5276cec4600d193f6d03591. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/BRCSH2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9693f47ba5ae1ceda7854fc0f1c0f1e2a6a109d1f7d0b6e60f27943914e1861. 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/BRCSH2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2855baa7c62354da38d05a68af905de61bc0256e0e448e88d9f91c35a7d0538e. 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/BRCSH2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e2b7d8e12a1113b69f86b4e47ebcd58e3901e06cce78ddd3f93964178c12cd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:17Z), 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/BRCSH2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4b28652adc2a3eade933717784e62a27bcf5c15909661f02291f4e40be7b67. 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/BRCSH2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd95bf652734f12d8ff4783f8e92eb63cc5ed61fa9300b2e59d3da351f8ddafb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRCSH2500032.