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 0x4d08ee9e2bec48659cbe2af74fcf05f750e6cdca03ae24a546845e7f6d2f6580. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09d2cee9-0b60-4aa8-9e3b-950c8a39a3c0.json and https://artists.proofprofile.net/proofs/artist/09d2cee9-0b60-4aa8-9e3b-950c8a39a3c0.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 0x6cbb5ac273b085c22db8f05c18842be6057e69de1197b253354b7f68da8ae60b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:01Z), 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/ARG991004110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95fe984360f31c41ad99fb667ed1002ce379523bd2a05114823b097e0685dac. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:40:45Z), 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/ARG991004111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d44eb4b26cb90f8d73df6973d0b5aabbd496757c368c666132c78996c3fb5f6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARG991004112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abfcf816eec39c9e565ba7b7003aa1c0c62a9f6498587f047bc58de3bbdf2a8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:46Z), 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/ARG991004118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96ccbd4441300f64849e07d5ca3200f4eb7a9447c3b40d7040828279d6a890c. 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/USAGX0500632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed3d2ecf5f2b8bebbcbc12da768fdd3ada2f25daaca8d85e637faf1b1bd19be. 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/USAGX0500634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e8a4569201e9eb29b7c3f3740a8737dbfc632373226fc64f2b7ee051e53782. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USAGX0500636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6e9289983fc9bc7c75a2e6558328fbf096f40f3b7c0e53c914af590c696208. 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/USAGX0500639.
Sonidero Soy/ La Tengo Que Olvidar / No Nos Supimos Amar / Te Arrepentiras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf261626e830494dd1588b1e9f91c62f5e3525799607b759227c541cadce232. 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/USAGX0500644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb339875f9996d272ebc16961430b5bdf5402327d3edd8c841580a9414143fd8d. 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/USAGX0501694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15be2106adb45f1dc63e98a2a7c470e7ded6aafab3e258716550964037412bdb. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USAGX0501695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb654a68a4d9a1b5b8986ca182da30059162e463c9b1dd83eaa84c6a1b7e67d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USAGX0501697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa259808a5ad5cd28c3ec700a201e184505ca6f98b03e3f7b353bd6df3c854279. 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/USAGX0501700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2afec58b470fa98a2945bacb32037277c421f742d2fbb1bde7b3d68d03c58b6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:35Z), 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/MX4971504572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b1a025877c4fa958f4680ddc19047eb885aacee77e3744c38ca57b06e68890. 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/MX4971505036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95eed1c5536bc141f8b9297ab8a14b893028a0ffefe28558e2c8880806bd865. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:31:00Z), 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/US7VG1762039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374edca41fc1362e9ef2633d505dcc034a8932b0ebb019a2a3f5db27949e7e0a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/US7VG1762040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bffed510d4233cc1a54d9ea4ffb427fb45ff4d6871a898b6d023d1d6e1b569. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:03:33Z), 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/US7VG1762041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb41023d1085a2882a090f8421aa34761bfb9760d5cdacaf146d1ec3ad8db6f7. 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/US7VG1762043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb139a8226e9e563bc5aa57cab8f602da17e803a9d811d2e555201948e3a1e0b3. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:25:57Z), 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/US7VG1762045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aecf8c508db02ec9541dd3a262c57bdeda1216069aa74e4f91477eb727263cb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:19Z), 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/US7VG1756804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb4f9e190731a8fbb68bc74bb021af9272edfa6ebb8b93d9fe8b13855b2f323. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US7VG1756809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92679fe09e2c88ffb86ce3453bad85c0f6134f8b119b6bec427c0058bbb7d6c3. 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/QZDQH2425892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8905021db82e183fd84df7142d7e72128dbfbfc4193a124973b889e9c69b4d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:53Z), 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/QZDQH2425995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa7f4a1bc5c94bef01f427b0fe54045d047e6255b9b86089ab0b8733fd6891a. 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/QZDQH2426000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b51bc3d96d4a52bcae5e4435699a5465e68a65540c2e263f9d1f9f8830c6f5e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZDQH2426002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc387ef9a328b6aa103cb58000cd180afc8ded93efa8c40d454613522c0b4bd2d. 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/QZDQH2426006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd342a200ada543a3bc9d38732fd3c072b1a9992a61f6520237b65690bf64b145. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:37Z), 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/QZDQH2426724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f9484242439f5404d7e4a719b0e8759a5d201f5d268f9edda3cfa990a0dc47. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZDQH2436223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7f20cc755c8e4bc5913f75f7882d74d3395c5ff025d5296181d23343ca0bc3. 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/QZDQH2535544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32e9dd41286c8a9fe859717396d108a270f4d7da6370344baa9d7ac5b6a2459. 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/QZDQH2538484.