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 0x18182fa834e7ebda46edec9956acc4f63fbab463078ff1384c57360341875ae2. 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/e8512244-6ed6-490d-9ad8-1e0bdf2b5a04.json and https://artists.proofprofile.net/proofs/artist/e8512244-6ed6-490d-9ad8-1e0bdf2b5a04.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 0xaa71be4e6868e2020a9e6ef5ec4a225db703e70fe0e65c238cca279c451f241c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/TCADS1852961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce038cb7b64a02755da301c2d2f2b80625ed37da8513cc7f2ba0550fa53e7336. 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/GBMA21945176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45c9e0ce0c6b93c70c27c4ba974b3ec839a5f789ad589946e23582bacb544ef. 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/USA2P2248075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72637d1cfc08a99cfa443557150bf716c9ca836c7623dac7ac193efd5d8958d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USA2P2300931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d29b2f3f459a7b134d5abbbc167fd88ae6d6f1f66d288c8f9fdd05e67ab9758. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:26:48Z), 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/USA2P2302563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31c4c6c3c2e64e7916a60751baa3bb723c11cba8caa097cf5e2dd08a53543e6. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/SGB502322593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded2ebd22c76890cac5fda4bf33c9302db6a3bd66bbc91034397dd2023c46573. 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/SGB502337656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7c7d5fca529fa43741ca5bf40a84f74d1cd95da4d53adcfe95a1f89d31cd08. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T16:51:22Z), 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/USA2P2332613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c76843a8f2d6f777ed5ec016e06073a036cf67d6f58d1d718983a308ecefb76. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2345380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3659399b7d0fb5ede040fd4e47cb9207316c6baf5fc5826601b9974749d91b51. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2345381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c741109d33e63c46564207dec87eba2dfb5811f3bb87be3056754245a225f4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2345383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab665f9862686e62897240362a2fe41d23b441c42d12b690a7a371c8951bbdcc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2345384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fe8e85be7e1a12f70736f3b9310677552de7ca5444e1c0bd812cff271b01d4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2345385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b699c478136321054a9d320b86ac724bdfc985b14a4231e05e2e583863e46a6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:37:16Z), 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/USA2P2345386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45c9e0ce0c6b93c70c27c4ba974b3ec839a5f789ad589946e23582bacb544ef. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2248075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ac1251ea918a7eb32b5fd11262aa1ba529ff745f13e008caa87268e148f52e. 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/USA2P2345388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc46ea799c4a946b3fb2e03922470f4b6daf7c76ce6b0a48c3496f9f956e9e4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2403107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52be2fc8c9aa28b052e2f62e617f50d2c7edad8a51f9f28b3a7118d49964b5a2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2403108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c76843a8f2d6f777ed5ec016e06073a036cf67d6f58d1d718983a308ecefb76. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P2345380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3659399b7d0fb5ede040fd4e47cb9207316c6baf5fc5826601b9974749d91b51. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2345381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa933daea18a174e932c445ec17bdb7986644064f0c0ab982155f98a5fb8e65. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2403109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c741109d33e63c46564207dec87eba2dfb5811f3bb87be3056754245a225f4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2345383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab665f9862686e62897240362a2fe41d23b441c42d12b690a7a371c8951bbdcc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P2345384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b699c478136321054a9d320b86ac724bdfc985b14a4231e05e2e583863e46a6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P2345386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fe8e85be7e1a12f70736f3b9310677552de7ca5444e1c0bd812cff271b01d4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2345385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ac1251ea918a7eb32b5fd11262aa1ba529ff745f13e008caa87268e148f52e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2345388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45c9e0ce0c6b93c70c27c4ba974b3ec839a5f789ad589946e23582bacb544ef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2248075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd491b5830eeb916e8e124eec59ded1b5ad58a559e437efc77a783ec3c28ceb4. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/USA2P2403111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88956ccc36e419728b78b4fad47165f4fe99d58fbd447ced3359260484fc1402. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:58:29Z), 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/USA2P2436685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192e1b5de12c54e28da4268a8b793b22264b360a00432eaff6248e79d0e2a663. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/USA2P2478109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b5d34de323f1fb7123d882e95e1266f9719c0f0b5af284a27d9f8afa119bb7. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GX53U2530760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c21ac101f38f97cc4306b34a6fec8ca75b75a6507dd13bb4da6f7916030d48. 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/USA2P2436586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192e1b5de12c54e28da4268a8b793b22264b360a00432eaff6248e79d0e2a663. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USA2P2478109.