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 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 0x44a0f0c1964f09efd9c6379ef8f1e5be191ed1ae0025577c305e0144c1568e55. 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/48e2a671-676d-482d-999f-855674211331.json and https://artists.proofprofile.net/proofs/artist/48e2a671-676d-482d-999f-855674211331.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 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 0x77cb9dbcfed26d88c7711034fffea6b31b93b7c642364ade94c3bdf8dd7d3c59. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/USR010810913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628c5eeeb9722b66dfd3fe6b2f2a2052ced137b6b773fff38dbc95b1b7e72e6e. 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/USR010810954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da7c3cf7216ff690abc5ae5bbbea2c9cfe985e5a90fed5e4248d5db434866c4. 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/USR010810935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd509b8031394731edc1abb68b90e96bc7fe6e9a182c6fe6dce68aa22fa8f3457. 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/USR010810975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6641709f55fae3bb2b35dd82d28dbcb9beb69a237156420f2572d934ed84097e. 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/USR010810955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77e5f39dbda3d4dc2509e1a9973ee6f7829a03d9e948f91ca8888816bc21306. 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/USR010810937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05e8a1366f13685abe8af4495a756b72a31d7326fa7de90c045134ae4c29a62. 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/USR010810957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2cb053eb0e277865f7e18d3ec36f3e9effd667845797542d50e1751bc44e43. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/USR010810917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15fc3ca9e7da49602b4e8eef05228567600d59653ef3f207f4f7fe198be4d90. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/USR010810897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f01e32a8dda557044b09f4a73eab6a2a446696e80b1deeb0cdf258fb6e4756. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USR010810958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70a037948af4f13dfdd068a22ad2e0ee4c2749ded42e7d44421d76eaf4cef60. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USR010810938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2754a2bc493ac2998bd62fe9b7178f549a388f5ac33498e59a048d99fae8472. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USR010810919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8505b12766cb0fe38bca3930dadc4c65edf73670f9d0f5b94c6978d35e305193. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USR010810959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ba7c54fa1996e90c63a266708ff6dd3cdd9917d276c4d40dcd817931453244. 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/USR010810940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f05b6cd2374e7efaf9423eba79a010d426d1b7c0609416829672a8c4254ff4c. 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/USR010810961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126ce47004e7416c16023bf364f6b1ea8fd65a9c0b7c4423a5a67b5612251e00. 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/USR010810901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9afb2ebffc2519e58dd5ed346515ff48ff354d10741c82135a3222aee46de7. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USR010810922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c2a50fe46676d40cd7f0243b82a8255d2a937c5e30333de6d394f39d1a4a96. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/USR010810982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf25b83d8572532792f3bc4ce47ca8ce32e701fd822f0ee0c52f2b17e4a33504. 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/USR010810962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdaee8d1fa9f42204102ff3e5c0581bf85e8777ae627e928268c85c35686796. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/USR010810963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebabd954c3c669e7e7e4f6015a0123a9af7a8b62c957f65781ba93229076b749. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USR010810903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda7e1205df92e2fbdfe4b79ee191cf5d1f18fdb19d453feb71fc5eee1c638a9. 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/USR010810943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf20acc65520380206bab97a5ac7a33d41ec1b585661f950d9514e2e3158109b. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USR010810984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31163694ad893ce870bb3d5401b59059392eeead54208ec179a5707d0974382e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USR010810925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f2f4b6b081fcfa1b32f1126421d7c34ef3efd5dce6a541c8ada7a539521a7c. 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/USR010810946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe031c5ae39ee10c60a47df9ecb939ac529510fdcfd5a6dc8b04dd0558110ecc. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USR010810966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e92021238e25f0afce5d9c958b96f9bddb3301a2d99f615c29f26e3050eab99. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USR010810927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250ad6765d83b649a1188218107496e134967894ae7d3547bdf907e834e2a091. 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/USR010810947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcb2cfd72bdc6705dd3be2c9fd702be1bdf8681fcd93e51c57e201d7b7d547a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USR010810948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5328d2f4da10768070dd78a4f83fe3cca16294bd655bf0700187c844a5625a4a. 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/USR010810928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ab072638e3bff8f2b252c7d2286866157c926b54af81e45ffb2446464564ea. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/USR010810949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e81b66267ff4215b0a5955b85500146d895c6c5fdb90b020df304990648950e. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USR010810969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd34e291a24f048762a0c93ee2bf51ef013c3eb59742fcce9dc151f672f4c8c9. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USR010810970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13b772d1a832f09efb29f738a19b6dda8221ac1e539732ae1e68c3e60b90641. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USR010810990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5a438054f79fe24aad7596f3114fbb93d8e0842b99bda2ccb62ea4707f49ec. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USR010810932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1a600c01cf1cf3bae575b493c13cff86e42a35f5678127b8d1b56e6ae47c4d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USR010810972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5b966b5cd2f9a28c10ccf091e0fc42d34efbd9cd03fd2ec9db0463ab13426. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USR011011019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d13ab4a99da14c062c85ed5c82e9f77e32e536a148da07a4a31c16d68fe4e41. 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/USR011011050.
Tangos Inolvidables Instrumental Volume 4
Tangos Inolvidables Instrumental Volume 2
Tangos Inolvidables Instrumental Volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5b966b5cd2f9a28c10ccf091e0fc42d34efbd9cd03fd2ec9db0463ab13426. 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/USR011011019.
Tangos Inolvidables Instrumental Volume 3
Tangos Inolvidables Instrumental Volume 5