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 0xaadac6941eba3f1b2f572a9efaecf94beed1d3dfd88cd7fc08efe966e91d8534. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d682ce8-2fd4-4787-96f0-4236dd66ce48.json and https://artists.proofprofile.net/proofs/artist/6d682ce8-2fd4-4787-96f0-4236dd66ce48.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 0x3d277f0fcae7a28c855fc9a8cccfd12533462f74f20e42de16249e0edc467a73. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLY330801856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7881751299db86a6fedd1fc70f8df5abbc9ed707bf671ad684de3b4047f3b0a0. 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/NLY330801857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d04d592ca53dd6b394a28b05d8b11a7c40b8c01872564688a3ec19c3e77bad. 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/NLY330801858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61fcc317ba97e5de97164dbb2bbbc4ce21ace3a2c9a48b0efb66d7343b551e2. 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/NLY330801859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0dd8dd47b4d9db7f3cdce3cc2dc5ee6f9e65e51cffc5898adb9e569291beb5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLY330801868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c055507408787af5b003e2dc5c2570f9aeb5526d29fa9d48a1198a604b770d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLY330801860.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701dcb8393112fe515f2c014affaa43b5e706084c639ae2e4d5ad400e3f419c3. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NLY330801864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7748e7229932941679e025aefde4d1844d7657f1e9653eebfdfdbbd882a667b. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/NLY330801867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc33a91e263daf806f376ff4440cfaff5b94cf36df208e0e587daa8737e66cc. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/NLY330801870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcdda9add511a82a1853428e8d45b9cf34d83cb2bec39e4ae555d50379a1679. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLY330801871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde591301dc70311d307576c0669f3bae111b97d31ee3ca1bdc098584be82f043. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/NLY330801876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb109e636c9b19112fafc4b415a20a8eaae485879a96b0cc641842004cec463. 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/DEY322401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52824d118c52eb2d298e44f194a617c387b02b8d1ba14df5e68f6b9e2606c563. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEY322401002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e51680adda26db213b0e91be070924df6a76950a590b1d23ad06377c1b289a. 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/DEY322401003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fe814376887600016a52513b19514e288aa010f4e031bdd66098b9183c2a72. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEY322401004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b56a411877774b3e32fcc7c16e39faf05bf097b0e849d9292321e78a366564. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEY322401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b1b0f148d8bcea8ca17bc0c56124d8ad919ed546daf7ac6d818d8843aaddca. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEY322401007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d74fd3363ef79828def84d22caf9d6d09b9b4d2f0619197025d0b4414b16974. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEY322401009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b3d416fc9248ca80babafb42465e84d8caf0b138b8c75b310d43c7c45349ef. 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/DEY322401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b10a88796f2e14943b6b55a99e4daa123f1c274fe4a9f099f7f4e7429e084e5. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEY322401012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59221a53f3df53b8e3a165651b3757f1b3292b4eac530dea5797184b6dc812a. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/DEY322401015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67af8e77b024975311fe5ba035eb63810b1626fa09a4b83afbb97079988a8cc4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEY322401018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05e2ba8b98ca7c87b0ef3804c98a18a6939cf0ae43883f51345ab9ae5f8dd20. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEY322401019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46955b826db02b735f7fc6990af395b3129c3b0e3eddc931ddbc519192ed8783. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/DEY322401011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0496aa986b779bc6a22a32c94f6896d301f724d766fb0af6007d9bbefb536671. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEY322401013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54a5094d3003714bb5dd7e9f766afba4ad3d995abfb14fd2b076b978291f5ea. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEY322401014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f955bdd479de2c58b5ee3f49ae5b06099eec6e909565c0a0f1facac6b5dabc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEY322401016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06586c53dc3b90770ef338d99735113d6e479d282f2c02dd07f66a5e52c768df. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEY322205002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff80f52f47795a48db2976d32ec8ae9d5f1acbe26730a984ae47d1fa9bc5331. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEY322205004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ca6aea491f3d31b967960ac6ad5fb8bc6d9ddfb7b85545e58509b5307f28ff. 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/DEY322205005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fa76132f73ec31fe349b11985d4b61d54aae571e2e5ab46369bfe5de79b194. 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/DEY322205006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd60f630310c3eef679dcc73531b69251a3699d7aa1d375fa3389711ef2468f. 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/DEY322205007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f3c3132473643f69ed7eef8cbb758b9a3722b4a7ff28842293a23c49672c2d. 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/DEY322205013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f4a2ca49860f183dff67ea4531a5429cf6e0dd502e0ef7fe709e39808b619f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEY322205018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25a4d765ae6ee9451fe42cd0bc0c2c5825f80b08e007180259838c76c42d2de. 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/DEY322205019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aba80fe740212781613ae7f4a7759690a4a3a9530050a0cec7d82256c3cddeb. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEY322205009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb137616b6390f27b6b8382119fb1a8f4942529d62e77629adaeb883d1231405. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEY322205014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638a1d5b171ee8a5536a608da231ddd951c0e51c98ccea2e853bbd413cab9a92. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEY322205015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500c57f6b8a6915779426ed6444c757af31340de88b5858ce370f4d221750c7f. 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/BEY681700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0381816f721ff05ad55b1f71eb1327e23f5e442f29a5bc5a63ad76211e4fcd5. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BEY681700083.
Sekretos de Mi Alma: Kantes Djudeo-Espanyoles