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 0x6669e349f13a9b338328217552736a784add1e91233848b3ad6166160396a781. 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/30e0f5f7-2416-4103-938b-ebbcb4288e51.json and https://artists.proofprofile.net/proofs/artist/30e0f5f7-2416-4103-938b-ebbcb4288e51.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 0x6f45e1b548017992f4051cfc3532cb39f335b75ea60322825cc78f07a41b3efe. 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/USL4Q2348166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b29a5fdb51f19351a5e92b4108763e2a49d56ae600da7344fcbfeab11dbf41. 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/USL4Q2348168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc387b7bc9fb87fed66283a448113afb7140fbde0494a6412264535077b802538. 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/USL4Q2348169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0126a6be535aa959c946932dbc7dff4373e602fa1fc5b7f02e9ace589b894e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USL4Q2348170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfdcb841e6f09a32f9c6644db61f3d464be570254843cb38cc73c1c840d3e2c. 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/USL4Q2348171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b36e8957bac727b0fd7425cb821a9c6ddd0924486aa09c1a18470d2eec68f6. 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/USL4Q2348175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5df558ba731675c0431f9499a4c2dd68abfc3cad2ab42fa144f841dbc5d0a9. 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/USL4Q2389632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e09bd273a6bcd9b85438f436d260b213dde5f1020b957df8ce5f72015b42eee. 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/USL4Q2389633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a63776919e01f8a334b197474c6cad4f57fe8f14a3cc2b20264b6774c98224. 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/USL4Q2389634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3653fbd10ca5e6c9b921455b50887e09f13d524fa41b9da75ec79cfc26fe1c. 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/USL4Q2389635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817b3a91d70ced75281a7a1fdfa9a67ca063ca78bce9de589a93b6694477e134. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/USL4Q2389636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b44bf0d737e89f638caf058515669197d4cb3758448f447d71adcc99c61305. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USL4Q2389637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc2644dea6ae938a8ace68f08fdf21029079633253bd16bd84a01961937cd8b. 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/USL4Q2389639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af83997c73f17f072ad4c6b809ee6d3afd87ce5f5a7b7471ed54c2065b96435. 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/USL4Q2389640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5119a9824a27df9b91b100a23f8477d073e656f7ac75ca4adf3982c723679d9a. 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/USL4Q2389641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe108b6cb680843d1cc4e41a69bea73534d7a9d1e4d4ce44971d18716802f265b. 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/USL4Q2387996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2eb57f6f7fb79545b73e08f4ac3230f2a82c397e38c734e4edf35cdd4fbc70b. 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/USL4Q2387997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1457100e7077223f5569293d7fbfee9c23967cf6d7016f8bc073b2129697d705. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USL4Q2387999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab321892aa5783e07ab904159a14df07d351cbdd42346bcb247bcee87025391. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:56Z), 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/USL4Q2388001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9418d7bafeee0bca62c258c9848c7da865f2b025f15a5cb2b1c96f38f90c662. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USL4Q2388002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb762c31f672149917f8d225d4c999fb6be926ad3b4944e1bd0077d3389522bec. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USL4Q2388004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8eb50f7ee6a4f79d12fda4e7721b4661cdf784a195c07c17444adacb95b4c21. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USL4Q2388006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1295ad75e3e5627a44f785abd48ec56121195e0e4262899db88eb229ee3eae3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:23:36Z), 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/USL4Q2388007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf764b0436bf9e79b34f189d79e27da1a661d6e775b5d957dd5a267eb283992cc. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:41Z), 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/USL4Q2388119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d3b6e68ce7f90a8249709058acab592ecb44f8c727c1c89b8f8d22fb2e2510. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USL4Q2388120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee095927e67d9cdf8a00e3305b9272dcff58bb1ee39216502654a81a5a9177bd. 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/USL4Q2388126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ef00784ee31ae58f3e5c3c3cdf787baeb578a51f1dde1aa784716b15d8fbfd. 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/USL4Q2388130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5fffd0ae8b96f7cab3ea3c052594dbea10d78fd981c4b98128e44f4b4d7c9c. 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/USL4Q2398536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1457012d545746aabf8fa92d4b3fb93294c8a491442f631b3534878efe8f69f8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:03:40Z), 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/USL4Q2394911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78911eda27d4f92208f010a8d4000f068d7ae5f721ce360ae331fa6fe2f01955. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:59Z), 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/USL4Q2394912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba93c2128476c225d3a34872781a284dc991dbf32523dcc0994723cc0e7665c. 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/USL4Q2394914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14eb3d5738683f818d546da9a320e8e4e2f25e80e294ef4927b1d2d1dda97caa. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USL4Q2394919.