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 0x17ba47b62b1bd0c8507d126e94d6cf1ddb59d8ec53c16302b4c0743428d3e4f1. 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/2bfa669e-8d29-4903-94fa-5df440041c0f.json and https://artists.proofprofile.net/proofs/artist/2bfa669e-8d29-4903-94fa-5df440041c0f.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 0x3351472a65f33f405b413d56d62528a65b5cff0f720e940c4bac26cd38a0bc65. 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/BREPE0500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5348979a45e30f10bdf16624586566d60c99d54a7fcd9d554961bf54e311a81c. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/BREPE0300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe242429c0930f5305e974c1d1a4e49529c33d8ac6055229afe4eaa075395f733. 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/BREPE0500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60616b473fdb3ac06b38f8a230cabbf257cee0c7920ba664259cb65219aa93dc. 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/BREPE0500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436aa44edf4bc382ad3a0dc7f4f5c66d89b95aa51f15c8a7d7de2a887b913b13. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/BREPE0401188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803539767feb77654823ec5815757150e86ee7dadf2697fd4dd42f9857a38fb5. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/BRILA0100309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79110063c04293a650c2a4810a5e22ac14c84bf2c072d5be695bad5cc534b181. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BREPE0500118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc851b566701c901a7e5f195652c2a52be3bebe9227f4eae079e4abcaf82c18. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/BREPE0401193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360e5da4dca17b5bbfd539f39857c82a24abe01595b784d6659881ee5f1b0fb8. 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/BREPE0500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8a40a81a694b2be46ac0a4963ab8b84b56d1073ffe1fc39dfd4932dd1eaf3b. 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/BREPE0500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f63d613b3c0958615499f75214f7e36f79a0134daa119d01524794805d6ee5b. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/BREPE0500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362ad963ddfaa0ead99d877bb71f187548e8dc2ba8b6cb184c6a672a11f6477b. 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/BREPE0400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168ad06fd97e61e425a2cbc2b116f6c369269c188439c047be82415e7a022d29. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/BREPE0400675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb754e0f10d5a90d8d2976ea12d3bb6c9769e5bd09a4e454a6e8c28792305f5f0. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BREPE0400700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb621107271cf87eaf13958d958809e8ef93134755c20dc99324f4ed8023ca2b4. 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/BREPE0400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa86ce2e272bf1aad5ef6d2feffdfec79dc7e79dbf49299c553e4a54f7aade9. 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/QZNJZ2310883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f23958a5fae98cc1db19f931bef4fc6a7d09bffdf6f69fc2cbbe5ba1e7d98b1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNJZ2310887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e8f11b9a1ff91e8193234d2192bdc30e86332b2f0c09eddc404213b45b55ce. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/BRACT0700301.
Pot Pourri: Ponto Chick / Dobrado Esperança / Dobrado Marcado / Dobrado Silencioso / Tenente Paranhos / Dobrado Maratá - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ccdea2912e8839b783230abf79f8d67a2c404d6757c07db79ed9b1db9eedaa. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/BRACT0700308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2779431b576cebd65e54b7ddbce6868fbf525dec6baf15a604793904f24e774f. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/BRACT0300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414e8b8ec0fe9be0d82ba962a8817c0908f8345d7444f57bfb9f7d55c83f9874. 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/BRACT0300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b1e72580b2e38365e2739ff8b04a24ca1bb7c415416ed69573e1de74402b35. 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/BRACT0300220.
Três Tiroleses (Drei Tiroler Mit Dem Gummiboot)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4e05f7e72c0600cd0ca4434815d387f4d0843db7e2e9312d2d4fd85e606549. 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/BRACT0300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792785af7cabd36253ac58729738f30547c6cc6784e9b15cfac369b8ace87bca. 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/BRACT0700876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05444cb08c5d6c89e2f36ecfd4cdb67795efdb9da4cdb382b1ca8cd5979e5841. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/BRACT0600404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709fc9de6253db63ed563ba7bcab2e28f2f54eac808af60fcb5916fe5df03c65. 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/BRACT0700305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1feb37cc41e73339f78068ba8bea8b1f51721564550192908278e299cb912025. 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/BRACT0300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b1e72580b2e38365e2739ff8b04a24ca1bb7c415416ed69573e1de74402b35. 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/BRACT0300220.
Melô do Rolo / Wen Die Bayern Feyern - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e6e07b23a46757386f085a6f0a175d4cb128a74e3b96afa962e6cb77e93db8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRACT0700644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5d286d27bb1df61c90af0089da6ddad30833c06f11bf7c492777bee7222cb4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRACT0700652.