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 0x314de70d30e36e0514c0c406bbed5271f9bdf6ef104b94a17cda80622578306d. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08f279a5-ba9d-45d7-9313-a8a419e0c9ac.json and https://artists.proofprofile.net/proofs/artist/08f279a5-ba9d-45d7-9313-a8a419e0c9ac.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 0xada3eb70e6685f685b97500d3729dafad2854d524ff0b88e35625a11d7778775. 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/BRMXH2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b57ae7dae3c6a96c911fd9e44fc6288e5039a513b74a5ca07c6e2a2fc246d9f. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/BRMXH2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703e91170fb455bb432e85e40d96b3ff8d775ee6b9efbb81b1e3ed23ecde885e. 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/BRMXH2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeccd434c0640dc59b1fd3ae95dfcfe5ebe9885d9b90a7c8b4f96a879c572ee6. 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/BRMXH2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11f432aba1fc883250c05139960960d28df490a1032ece0274b6d7a8f5ad11b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRMXH2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bccb3f4b207b5bbd6a0d20feb9a07670f3575b27492f8c03b717b85749ff60f. 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/BRMXH2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941c0846da73b41604ec227ea1db25a697d16fb0fb3816a6a34525880e517907. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRMXH2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db190b6509a3d868b9657c90518225660f8e6317d04ed368b708ee3b5796c9e. 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/BRMXH2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098e14130acf2ef0fd62d8412493a797165356d7d427f69608730542f34f9ec7. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BRMXH2400014.
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 0xc740ef55b4730113db95e053fd6514e7a77d6798495aa173d8a0dedcd4104031. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/BRMXH2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f1f0808387109bd4b58b02582f50e1d5a83dc14853b30148a4698493d4fb72. 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/BXPYC2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4fa40fdf72da955880042db40b7ccda580bc0c5a73b9a7f16dbc799b11c307. 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/BXPYC2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51d4ef204fda3c45c3a8d741b8c9c90369772117b65bad7b029d191338cf97a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXPYC2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cb3e4b38924b5caccd89ce9be3e2448f2287d66df4066fe8bc8acfd3604bd6. 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/BXPYC2000031.
Sangue Invertido no Coração Negro Despedaçado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4bc2814bdc08b9e2d8902b1e43fc4eaade31f895434e8fde7dad83a7bf40e3. 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/BXPYC2000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8992f11bcb5dfa59abbb3803f52001984ed31b0bc075b815f537f991d435ec22. 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/BXPYC2000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c91dfd0c12aef3885e58e2194399b6a22ad35c861d1d667fbc8431552aa51b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:58:52Z), 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/BXPYC2000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad21006db4e382b46837afa23a2f2514f07e6d9650713f9b2510d1f462a7c8c. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/BXPYC2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e3c2cd7fe2e1894855b276b982c65235feaad929ad2f21f5667f1fdf134dca. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BXPYC2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc635a3df43416a3b5f219250c8f02a64e481c96bd78cbcc4b7f3bc5ba352cf. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BXPYC2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e5c2459ab11277c1407069ecebb92c4d70b7c64eac4df8ae528917ccd5a437. 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/BXPYC2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9de1ec24c86280ca531480312c950c992461ad52c80bc2a4f00450619c2b6d7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US7VG1979356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5159ef0f4253ba5ad423c9462614a35b114c7fbe26badf517bfd86819a758d95. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US7VG1979358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89d991a81ad80b994210cde3a3a8e094d7086bdf83674e1f979d1bf365696cf. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US7VG1979353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7f5f4088166f693581ec022f4793eea12ff4ff51ffcc0a44e2d901d105c2f2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/US7VG1979354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cdf8f7fc24fb7386bfbbabb9746b8c4362f38cae8659a55fea0ce519a61177. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US7VG1979355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a53ba51d56eaa9127cdbd4e1655c48290dcb19ef8e5a0937ce51bf011b2022. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/US7VG1979357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817a700d1bbcd4a70ca93fab56abca569a2ea6c7d98ed805f2747e28df050600. 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/BXPYC2200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612e793a837fa2fbc885dca1ad870836e0aac504e9a7e886046cb87ad1381a8b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXPYC2200229.