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 0xbb14403a65c7aaa0b94a8e2c4fafbf60571fd4f64b87c379d720adac8d0306e7. 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/f92d4c92-1174-4988-82c8-f1bdf9c58c37.json and https://artists.proofprofile.net/proofs/artist/f92d4c92-1174-4988-82c8-f1bdf9c58c37.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 0xe956e438b38b3613a598e87164f97d30a8fbb9d26c5140c9290b8592691fa9c1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:07:53Z), 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/QMFME1327168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e450837511e495adcd626de56cd8438c3d0fddd09e2e1a66d0afe531f3cabb9. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QMFME1327174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924cc794d3c77302689823bd7d760f7acbda798d210c4de0e8350f3dc75f649b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFME1327180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce50c5906e345d5f6d73f29d381a2497969dfce2c21824bf27237598e425cdc1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMFME1327184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795a3467c652555ae2b1a31a298ff35c92c7eb6c5548de50dbc58d33bf0730d5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:32:42Z), 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/QMFME1327962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89d08ca484eccd17b073b2508f2033399e8ee3a893e081b68d3870353f4a349. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMFME1327964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21081d2b9d66ad356c0b2da084884ac8cb13c7beb0116b79f5929810b7fbc6a. 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/QMFME1327967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9cc3bc825180a3df60ca7dcbf009a5e170e0e7142c1df2a18842708b1e0576. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QMFME1327968.
Super Éxitos Vol. 2 de Grupo Miramar de José Barette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc768c45868bd0c9edcb58e9c730d2e0d48c7c3b59b65819d16b26a4dca9ae74. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/QMFME1327976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8af5faa8b029bc4880ca704a67c6093dce021174b306882ff40a8043862481. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMFME1327977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e2c7a3698443724f166befffe471d1c4fa6532526f3248412d0c1b8e2b3a43. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QMFME1327978.
Super Éxitos, Vol. 2 de Grupo Miramar de José Barette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5156020f14436afb6234f79128df8e71db7ea5d995e8241d3efb9b9c3afee7a5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:31Z), 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/QMFME1327898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced8fe7db9a765cf014fb875c1f332b05a2056c43f53d288fff904e6c9f30023. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMFME1327899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05b4f09c8fe4260632d5884ee0f09fb8c47e8a0469da0c6921af0c35fa74a40. 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/QMFME1327900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac74e030c26e61e52fb9ae6d5793a501c4bee7a6636ebc927bd90bd7bdad5b19. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:41:25Z), 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/QMFME1327177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5156020f14436afb6234f79128df8e71db7ea5d995e8241d3efb9b9c3afee7a5. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:23:11Z), 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/QMFME1327898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced8fe7db9a765cf014fb875c1f332b05a2056c43f53d288fff904e6c9f30023. 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/QMFME1327899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05b4f09c8fe4260632d5884ee0f09fb8c47e8a0469da0c6921af0c35fa74a40. 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/QMFME1327900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e450837511e495adcd626de56cd8438c3d0fddd09e2e1a66d0afe531f3cabb9. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QMFME1327174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce50c5906e345d5f6d73f29d381a2497969dfce2c21824bf27237598e425cdc1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMFME1327184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1531b04903f2aad21b833e4be15dfc21f79c7d6d5e3c99ca82073fdf92b03872. 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/QMFME1327973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8af5faa8b029bc4880ca704a67c6093dce021174b306882ff40a8043862481. 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/QMFME1327977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e2c7a3698443724f166befffe471d1c4fa6532526f3248412d0c1b8e2b3a43. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QMFME1327978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f7d1f17694d6d119f4111e316cac9986cc0684562b8ade84b670a9aca91642. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/MX2620974403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d7b8fa18e309971ed321b39cb7c69be5145d0e749d346e86a178ca72bc1341. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/MX2620974404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bd4cee4d3db7180376e011fec0f2956963ecd043d38cbdab806f2adc5db782. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:10:54Z), 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/MX2620974405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bd91812976645566bdf0e76f1b6671a9b91c2e32fbdbff95434b6d065dc38f. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/MX2620974406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea01cc2117faa7e9a4b608abd683f7702a5ebe7235009cd486ac7cd86b92143. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:27:39Z), 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/MX2620974408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68ad489517707f0c76045164ab55fe9cfad7f9a6ef444298e55e8e9a5361ad6. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/MX2620974410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620a715c8d4dff053c92fb8390984a68b5a39ac92f83a59518d792c81f5178bd. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:18:26Z), 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/MX2620974412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d04aec4f8b06d470d3a87d06360bf61907dfb24cb151d5f967aceeace48e5b0. 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/MX2620974414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad4aa02e854c75bf8c3d6cbd214d5ce95c07528965adcb21cfb0d5aa98427b1. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/MX2620974415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcb5d57245f8426e819fb74184acd218b10904af98eeb7404cff52b835b5234. 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/MX2620974416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dc42722e7c40bbaf84ce95deb4ad308b1748a3a65fdcea861dd65d7e66d224. 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/MX2620974417.