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 0x8936ab91959f603a96aac476bfe4b3907d344c4c06e0ae859c38d9c375e42c95. 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/145d7473-79bd-41f0-b1f6-437264fdbb2c.json and https://artists.proofprofile.net/proofs/artist/145d7473-79bd-41f0-b1f6-437264fdbb2c.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 0x1de6fe0a635acfe3544b50d1449a23bd1ab4e9ff91a46df2be614813b9306144. 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/USQE91500602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99264739a6b9094ffc8cb082e5160abc99d30819e62cc7aadc28e920b48d4644. 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/QM6N22328042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ee70e7f9e11332cd808dd6fdc4d55bc0d3ccaa3f1cc479257274c28ccc8b53. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM6P42393076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaed66c8a868edfeeab45047e7e35b82bf15c0a737dea5f12a0b8a1a8d346f00. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QMBZ92348058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b2464babd2f1ba93005d0a4ce5ca6c9497b31988f9dc4e06d139dc6e070b72. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QMDA72338747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99264739a6b9094ffc8cb082e5160abc99d30819e62cc7aadc28e920b48d4644. 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/QM6N22328042.
the sooner it stops, the sooner it starts
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ae35f6b13120a0996ccb39e8475ed13c8a8a534f6d4fb1399cdfa624a0ae39. 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/QZS7J2212536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db19317d1f1137501d0a6a837227def0da6861975b8aeb75de75b341e1186d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USJPL2200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f3c2ec8a0195f4e6df32d61c65ad721334adf0ed94a36bd0121dc439ff754a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZQAY2234534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556f08ac83065d0c4d56f2e5b49129e8b743c0e490e4f0f715a3220473efd3f7. 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/QMGR32278162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc676aaa9ebbf4ebab60a8951bd01b4abdfb8871732eb0c6e3acacd49e15b134c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QMGR32296054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb440dd7018e9dee9aeef003a019f98e031923e112d481c869b301cf4fcd822. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZQAY2179555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7e731ae286d779975c46e63b3189f97aa51aaa9d7e694044207068a33cf8fc. 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/QM24S2011109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2b8d37e48ffc661548b811824245da2b95660759115075dae40d4a7cb51778. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QM24S2011108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac492490b59e0e5caab5c89f6dd2a65f0051b4cfe805c5b623390143cfa7fe82. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QM24S2011110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9769a4807a7875e11eb915ea8a3afe5d616f0b57adad1d608187caccb52647b. 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/QZK6K2088828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b3e5ae97db6c0421fd39e06de1d9e196d72fdd387185e030cb4c94389d3c26. 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/QZDA82016376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fa436713612a4330d5aad49aecad6efb78e0e48ac3ad4504d540ed12edccd2. 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/QM24S1911110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef39914a6b7e37c75688d83bc9270db6dae309c6eba44b96739405c09ef72844. 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/QM24S1838964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efdacda02209d9be2fd8a2c4aee85584a45b3e6a6544c4a5a0d70c8877c3bfa. 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/TCADP1892389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986e889d64a461e9a93de1075e319a0789c22aa090b61a59fec237879752ac70. 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/TCADL1864460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4585d7cf8910a8e35701256d9ae4ef0165e5d49c99f612632724c611dfe53ea3. 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/TCADG1776840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e391a955ee4946bc8a508a021aa75b6040193708e6aa7ed37354f77230bee3. 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/QZLBC2100468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bcd4d2f79368e78ca76b340b09adcf60545ae16902e70d8cdbe0d688e82c38. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZ8GX1701443.