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 0xb9d0f9c0a2061a89805beaabbd850fb095297dfb49133f03c3774b45296b7e18. 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/0d210c20-d843-4c94-96d7-38eee81a4994.json and https://artists.proofprofile.net/proofs/artist/0d210c20-d843-4c94-96d7-38eee81a4994.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 0x79d7fd0438a8c652ed9375b9862aca8ba758fb4f938da990480032dbe69fc5f7. 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/ARG601011933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc120c0235e8c7c93b75415c23df16a552267e8ae2141e44d0ab36f67a6b97b6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/ARG601011934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7752181ebde6d03bcf87d9a55a110ad6a55f41a9332eaac78f8c80ac153daf. 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/ARG601011937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b3f2f690c913144fcdecfbefdeb3044a1268bc83106ad5384df1af67eaa67c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ARG601011939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c3c595476952a0c33779c7abb9b19bbe980b6c1b36d8e1c7a0c7f207f67156. 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/ARG601011940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c74b622905c83aa813c76f950d33f83e7295a0e417e247292ada427ec58687a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ARG601011947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319afe6fefd65e380ea00c0d051546f9773a191965bd8db4832fbb8b7303ea92. 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/ARG601011948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e26735b4a4bd3ec717ffe2e1d40651b977be54ed4b4b2a59a5b9838fcf5d5c7. 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/ARG601011949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc81d8308850e62fdac375f4e612a6cc3e48e744c0bc487b29208c41ef895184. 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/ARG601011950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8fd5eff13120bec8b4f9bfcd0dc8ef9182a5252ef18c860a91bd6eef444108. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ARG601011951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77aeb7a53d1a91815d57fcbcb16384667ca3dd82da46fbf58939d02cae485777. 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/ARG601011954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a9519ec13ec37daf714f92235bd72d98b88cf24d34e13a0cadd3920fff4976. 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/ARG601011955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f2a549f6d4cc91f018924572cfb36942223db399661d2ded27cf9622e06a48. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ARG601011957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694520d0d560ece20e45d183abe989c7e82a9d9e667a732e04ff97ce02113dbc. 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/ARG601011958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad9349cfd29eb87a525f5e6d85691bfcf1704a0c367ab6c5a4701c2a08b8b7a. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ARG601011961.
Boceto de un Vidalero / Buscando una Copla - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a223c6934982ea07f3e99c043bd7e0600f8e4584f37800b9cfa4f5c688db1e. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ARG601011962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9ce27892e98a6b3ee5747dedd8a0093bf87330b0bc04d9810e1269bdae3ea2. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ARG601011963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ff2c7e86168a566ccafd1290545d9ddb8e15447115dcd789a4a49c0399c2f4. 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/ARG601011964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0123b182d9b40f2ccf79595693f9b7dab831a6ec2825ba6496bb266fa48a08. 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/ARG601011965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4e16e667cc8308e15277278d0a90a18beb8ab4382c767c1e478d55a5e68e74. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/ARG601011966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a684ec252fdf1bd3b57dda84a820c2daf438014006516d009efc2f5d5a68da. 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/ARG601011967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e6925c180588b6312d30151c4bf574c6f1a7a3035e528dfa82cabab3460e96. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/ARG601011968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697640b39d4720ec1a6a455c1e37e3a553b776d8ae0181bb33bf09524aebbe31. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ARG601011970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cb4bf8e2a92bf2fdf24c4ae38de7087c91e233de976bd8d47b0f4c2be4d771. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ARG601011972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc722042abcaa8fa1a0a28fbe4981115ed606059ba130e1028ce27239aaf941eb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ARG601011973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4445af91e55070bfdd2346040715e6aa1a4db7c92b1452f427ba928af19b49c0. 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/ARG601011974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb7c038dcb3b05f34dc15849426a2c6304d063a8b27099b1fd7dba305154cda. 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/ARG601011975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adfee2eed9b4197cda5ae0af5481c5c15001c0babf133473336394dcb243e82. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/ARG601011976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721616413fad420bb9be9518fe5a357f609f5527b8294504ad1e7126201868ca. 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/ARG601300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33213f16967553db8123af1e698ff0f6ee48979b5773bfd5d61b05dc2233c42c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF040700132.