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 0xc1785af9949d4ceffd67181e927338fa78c354d7bd7cc3c601457d0c815435c7. 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/7cfa089d-574d-4224-a60e-8bcfc432bba5.json and https://artists.proofprofile.net/proofs/artist/7cfa089d-574d-4224-a60e-8bcfc432bba5.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 0x572a607b4e60174d377e2c2c0ff0421b96b6f44e059ce357f1d8133d68d3d6f0. 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/QZMEM2205516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9682b1aae42d35c0e115211261c544a41c699b133f31f4e3e07601a6348c3fcc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZMEM2205517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb10521b562a01fe62cd9638e5cbb0ea8e27e7a89094b4333acb5cc6011b21c6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZMEM2205518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9997308288a46d5714eb374d1f08deee61c5afe0458e0af0cdb9ef6955de37cf. 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/QZMEM2205519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e3ff49f7f429cb4384c74fb235660cb36cb46a897103405482ba5d95df0a02. 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/QZMEM2205520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871aea1363ce37e11abdeb8c863060a506b7c7baba550d695d3ab3a78d7ec21b. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZMEM2205521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0ebcf7587b645521a7a4049f2a01291386b94ba87d37202b5e40ec77090718. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZMEM2205522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c89456c990a0a95d9c2314c836a2becdac44f335cdb67ce0601dd11b69b84f0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZMEM2205523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c7d76dbbccdfa9d95e78fa40931eeda5447dcd3ee7080d132609b7e023b685. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZMEM2205525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c3283fc274a890f9b0b6111e89d0d672f0f3247de4ea3b9094c5e9ade3ec19. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZMEM2205526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b16ed84d1bda4ae278212f4536c1cf87f6c79fbb56e3514800c080cb5bf81e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMEM2205527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42af53a08acc49fac55d323ad3c4acb25eda67cc5e4e981ec1882ad4ea87f194. 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/QZMEM2205528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd325a271b6285e7bdb638160c8bd2d4f6f9cab18de5a377db16392b2225eb7c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZMEM2205532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af718a6f71e15f57ebc3b6e95eeb639ac7f06a935d1dc4ff18844719a1101f8. 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/QZMEM2205533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25473f71d324183c4798caf39fc0141a1a08da6dd98b51f9f04fb4dd7419b6d3. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:11:43Z), 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/QZMEM2282977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb8a1ecb2460289c530328873d0f2c5815ac01a73bff4220f7a9d11aace8398. 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/QZMEM2282979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ad73f8470d630c7e6c0b5eca9e055ec2e3f2be063ec5d765058cd9823f44ea. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZMEM2282983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b049fa393a1492fd3fe655add46eb3fb41c8c8bc17c22c9e7695e6593daf704. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMEM2282987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cff5cc90e52fa769fb7f9025e3285563f93b7dbc7fcd0d9305269ff303aeb4f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZMEM2282989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc328a3fcc8cd7c9443b3d293f643099d4b99fa57d47a475328e98316f5194a86. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:22Z), 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/QZMEM2282990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86605cb1e4f5d32cfcf86cb58322d5fc5c3730ddea0ce4daa799388a65fc4ad. 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/QZMEM2282997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adbad2d347f212021b2f09bd255e747a4e808522d62e06a8062d3364a27e8d3. 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/QZNWR2233612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee340f549f49ab17f9872528f1a8a0f59dd25f342e28229d8c00c029fbc9f0dc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWR2233615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6cd9fe1017b691c2b68e19896909f7cb1cbc61c25b5ac4fda6e7e2bb3a2c6b. 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/QZNWR2233616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db75db8f2c47d3c7c3519c46a62fde52e150445c82def28dc68c31a93ccd41c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNWR2233620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81561eaec52a1dec9c4ca989267953de1281fb9923255bd8811187815eef1d93. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZNWR2233622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864d9998ffd0250d2cf2c2376c969dd49e2299b6c1e044db7a855b445727f6df. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWR2233626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4da8850b60eacf442230dd554c80194b0a585da2ee0dedb9a0d85be4fe6bc3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWR2233627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2c7b78f2a4b043c20c410883fa26a81fa1bc589af36df271750dd7723adbd6. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNWR2233629.