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 0x643d8a41d581a1a283be7ca33dacf1e8c0ec3cf1726e69837abe921e7648c0ad. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/430f35ec-b365-4c01-b22f-f34fbd3a13fc.json and https://artists.proofprofile.net/proofs/artist/430f35ec-b365-4c01-b22f-f34fbd3a13fc.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 0x7399787503d3bf17baa2a0327cf9d4e6cbae720124426b32403336906f67a952. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES6170300482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f979e09b333f764e64e534a8ef6c711fe98a95217457b0e65159067cb8bedd. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/ES6170300483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc1f30949738904a9dae55baca2db5e92e18e945d2c4fc266e642347db0244f. 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/ES6170300485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6edd86af833612441807a3b417e6dd80140d20eeee017b1b5f8d4507f9fcc64. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES6170300486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc941f51aac4278ac347519e69b934f326897e140fe32591ccebe0f65d1fd2da9. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/ES6170300489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ed653335ef13a90919b27b2e9de7a31c3bc253668a82a2afc9078285b02904. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:04:04Z), 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/ES6170300490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2d3a1b2f5af0989e65e79472f4ddcf4e2cc5a039a707b32e6a89e47789169f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ES6170400664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8090834966b36c2227e566396dec3fb54e3f1106f26e42642897bda21b762453. 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/ES6170500807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0915e4d7908f580103188d1d1f36876e626646f2f953c03afd7ec7170db0393b. 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/ES6170500802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0819e980ef05b722d2e5435eac21e8efcdc8e2f16dcf3194ec192e24234afef3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ES6170500806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2fc2ce2cdc67473eb4888ce6472b581acd20b8e24d2cab21d098894bc1f791. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:40:18Z), 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/ES6170921000.
La marca en nuestra frente es la de Caín
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f61768266ab98f4070045ccb972c9f91db889bfdbadd30bdac6bf229bb6377d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ES6170921002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51b65ab10b12c35ee6585984415f3d8ab20e742d8c2c98c8bb7c122841b8d69. 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/ES6170921003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1956398b08b96471eef72ccd4ccbe82aef7505a4eb8e140d605bea54bf3f5084. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/ES6170921004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fc9e6562805088711620a6c387ebc2a84daeb4746b76b130dfb93b63ec1bfa. 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/ES6170921007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ffa9e25fb31415bf114e7940259e99c74950538af6ec5e80138e96b6f7f5b4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ES6170921008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7406378b012b9a011014f7c8dac0a5a34961a82d939801f4d7b79dfa3e099679. 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/ES7001111208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22180d9dcc642e89d14e41b4654c072d3a060af1292aa9b27fe8168fb4607e5. 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/ES7001111212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f17b4eb08b888db4c86a89b746ac25ef2a7bc9e9911865cd465f2c82a531f7. 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/ES7001113602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6877da8a59a80ba848085e2a1c6e8158249efdbd3266bfd9257877099faee8. 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/ES7001113603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83274ab9b798f4983800d620cba13c36db2d204964bf6d7b3234ff1005d26801. 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/ES7001113607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3991b8b9e47f9d0677b68c9d74e6d8f5e4a00f3e8130b185d64fe5aa212986bf. 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/ES7001113608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b62beeb07b7d17b9fa769e62de8e7a5ececdb3a09edc32a7497bf3b9893cba. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ES7001113601.
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
Toro - María y José el Toro Anda Bravo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabadaa0955912de3597897aa71a2484faefca2bd44290abebc3aff7b61c3fab6. 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/ES7001113604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46f075f0df278ff4fd1ef900607bc672759bd7ff377c333aa624fb904b2a669. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ES7001113605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0291c97bd4df4ef44fb050cccfb290421a75d35563920f81250ab925ef299a4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ES7001418801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7265475c6b65aad437bea9b3918276039b3bd77ba695ecb1c87430cd0ffb5a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:32:58Z), 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/ES7001418807.
Ballenas Muertas en San Sebastián (David Kano Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2384fb911629e75030ddf67e9c6282c8c74536b3783bf8c4ee679ec640674ecc. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:47:26Z), 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/QM6P41998243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bee68d0e6b7d9ea31cb79667a75784d5273ab66c1c071363a3d530394a7c095. 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/QMFME1974603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52b0d9330c1f013dc2ee4f54ec79d62e21657d6d2895bc79e078c7aaf23e190. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMFME1974605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3fa14d077168be49b374e9e2bd9c5c6277c295eaaafee99fac7d1819f2d9dd. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QMFME1974604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a668e5003a4f108c232e54a85265caf6c7d1fd71691e6234abf103d5fefcd84. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:03Z), 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/QMFME1974602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaec2a9659a0bf390bfac6ce34dee04ec6d8c5c5f02b126cfeb4a3cc511eebcf. 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/QMFME1974607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47de72b5a1de03e8461baa71154266659687bc4baf9db57c66cf627d8f99163b. 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/QM7282087539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3fc39d319e922dc7d11ba221db6bde6430b32fa0df39944eb49386db5952c1. 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/ES7001111202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a45b4977f07262b09db60d7a25fd76c9e5b19d963bce171c513439fff766f0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QMFMG2200001.
Toro (I Hate Models Speed Up Revival Edit of Andre VII RMX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cdada60d77391e8509c547d3439e6c8c78682fccbf02757aeace1e9592e283. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES7002162501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74181e9f83f88a0b04f7d5c7fa7999cce669d288771f5e69cf72ab4e1fd442e2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:45:41Z), 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/QM6MZ2306714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97bf1ff1f39fa6db5d3de3f101b62ed71e8905f8f23d2c78ada5161cfb87f53. 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/QM7282392963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309f43226eb8c397d0581c04982df02bdc98b69aab0cccdb2210e9a4e556f075. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITV952300225.