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 0x66ddfeaa2c02a1aa426f3207a1b54e7afb729078fcb5707882d01e719768eb63. 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/375e95be-7b61-4022-80b3-8b1d400e5512.json and https://artists.proofprofile.net/proofs/artist/375e95be-7b61-4022-80b3-8b1d400e5512.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 0xb111ca6cf2ff6f023b482c97879e341b84f0d3d076c836baef757bbd032df2d4. 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/GBKQU2246040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8119a3d555a49cf93d371ae69ea47f6ffd7441ee608f78dcc6e2d144c39034. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GBKQU2246043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca4c65741490929a17bf841440c6ed6f0d0cc719475266ce399f8c93a39976b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBKQU2245686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c2bf8f58e5d23bf5aa990ee1656f0bcaa7afdb4a024a4e44541c1c460e75be. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/GBKQU2245687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8491c7c62e0ff629938bb86a72e5583135c85cb2f9982b7bdc0b9379037c80e. 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/GBKQU2245688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b32cb0c2cdb4e9f6c5103754f987c3821e476f29ac2009b4799839551e87c6c. 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/GBKQU2245689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1796aa6e14b715bf59bc161ca771d97ab274c0f69a462f3f3ab004937133c19e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBKQU2245690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f4a12583dcecc675cc9c677400dff29d740c6f2444f6624cc6c11b07851bdc. 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/GBKQU2248603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d41de0088b15c52cc68ddd8d6ac80f1e363662c5dbdd633f7e1093a4a193cc3. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBKQU2248599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35954f4425d050e046588f2b08ace500b66b90eb376ddab16916299a694e4ef1. 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/GBKQU2248600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cce77023d77c4d6521f1bd5828f9857820ae1bc48fe8464d0d71653ab0219c. 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/GBKQU2248601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c6834015c3f48f7ae2f7b1a1bd50c9d77291823c255f0cf4114bde096b717c. 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/GBKQU2251440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b6bcccb74066ed6ba9795eed2bc5e8683d0c4230e674d33fc06cad87627d46. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBKQU2251441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3232c6a2e80e16b3ac8fafc4d12e51466ad346584951f166dc8f62d2e10bdd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:21Z), 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/GBKQU2251442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6171f85f155a07f08f63ad0a2179b50baa1a54f29910d4108c41168da1d270c. 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/GBKQU2251443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4054eef166eccbdafe863247182747fda28a888305e19498f1b1036f376073. 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/GBKQU2251444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6134de7d4c9ac169edbac7188e19c3cbbd614ebfbb29d705e061cc6857eef88f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GBKQU2253441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9b6a9f63257169823d765db9e4fa7335e98beeff89749c62b10904d10af05b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBKQU2253444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84f4620e4cc9ced481637e0747ad4a5d089c873e47096757a4de51d010cb644. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/GBKQU2249436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55fef5c07105b24bb2e97064725d8f38fe0da29104046c7a05e2f005019d92e. 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/GBKQU2249437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b6140ccbefcf560bc7942ac3ae079e8c37ddffc752483a183d083fb8ae8f57. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBKQU2249438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6585ca5e587209d87f1774750f3becf388fd0e64e74e1cb2d03525f7d35aeb. 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/GBKQU2249439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98692bdb980e6a6a0bfe0e1b48593b5eb6ee1e602c4774b020308f5ff1ac7c28. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:56:18Z), 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/GBKQU2249440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fd49e3bc9a975711ef5f55bffdfe1d29065141868a653ecdb0b10d7ae46bf7. 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/GBKQU2250749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe99066f001bc3591939a5fcbd0b2893d28b635a3dc8d11f80b7313f71c5bc80. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:19Z), 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/GBKQU2250752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81f907e00c49028eff043f949a30a7d2b98d91377d04f302545a10593190bfe. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBKQU2272372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3d80916f3bdf8f29abe49d699003632737d7634dec91e87346572ad256c6be. 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/GBKQU2427951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ea4a1baf4435c85c50b511991415db7d9ba53f5a7ff65676ce3687d2b0526e. 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/GBKQU2427954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b617112a842024d1ad450a80b7d12b9567c27dde9ed2db5ab55af129cc0123. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:33:35Z), 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/GBKQU2427958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d268da27366f69cdf4474b349cf44e8eda588bef8edf1e29583db9fea2f1d5f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:44:29Z), 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/GBKQU2433084.