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 0x4e9cc37be04b7f8073acebd621aa66c17a48ff550b943ed01953a85e15065839. 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/ad42502c-4b47-4a14-9ad3-828f1b43323e.json and https://artists.proofprofile.net/proofs/artist/ad42502c-4b47-4a14-9ad3-828f1b43323e.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 0xb13ac0af9eee6207f30e8661f88b9dbaa43fb1be53b6b1caea54ba2a3a3c0b99. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:52:22Z), 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/TCACX1728435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae873ed55fc8d6e7afe1df9d80bf53e922e21a4688b65479c68311d8704b13bf. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCADX1832279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01631cc056fa192c70357205e1aa08dd352856f36db465093a62616e5a8758db. 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/TCADX1832291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f86c20fee35418f1929f1ff17ac8d416f57534ac5fca257942bbc3f7892748. 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/TCADX1832312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83728efe5d51b7de9cbcbbf29d37ad21db2d930a3f62a2d87b7108356510c9b6. 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/TCADX1832326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a0644ab1249ab365019468078ab81edc9395a0da557233c4b1bca84e794550. 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/TCAFY2115760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400d800a0a31813019b0361b29cba3dfaf3cd273f03cace5c2fde859e3cbe0c6. 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/TCAIN2402803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c55bf7ed52e531e26dc80e291eac6e2477074e908bcac78402cd05c219d4e87. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/TCAIN2402850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e1759f863fc7548cea5c60eaac987e05090ed5d9956825facfaea0e76957ad. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:26:22Z), 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/TCAIN2402862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3b087e8918ddba018921ed65aabf58b647085e700ec5f6a91361070b18b7c2. 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/TCAIO2402873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63912a8e1af69c3e75956e25f1f46f47cf58b5c7470fba93ac568eeff29d34b7. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/TCAIO2402885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754dc4d9be3e3a8eee041300eb063b25864d4c4ac79e0b3f1ee882401f372554. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIO2410170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acaa17fe630eaeb8f241cf6f788283f6be7a1f580d3cf01b9aeb020a75c809c. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZK6H2588847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9399f2170022c87cacf3b9776d52852c2f4cf1f298b92cd7d6451dea6d8fb67f. 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/QZMEM2564242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f51b182be357a678ee6a5065593a71b06504657b80418d878679779486b85cd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMEM2564243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acaa17fe630eaeb8f241cf6f788283f6be7a1f580d3cf01b9aeb020a75c809c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:43:49Z), 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/QZK6H2588847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6981055af436a4a5903942481c4fb52af0c8346dcb880577b4507a0dcc6f342. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZMEM2564244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dfb5c9e1a900fcb09a1151087126c2230ddc4857fd61569132c11645407298. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:08:50Z), 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/QZMEM2564245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e0b85b7ea80e8c79236605de2371e812bbaeb6f1937a95acd6b6b82f477ac5. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZMEM2564246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6202234741e160e580df1186130f4316dc5cc2624950c70e9a6c6ce16e923f. 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/QZMEM2564247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9c67eb0524f509c2f2afd7cd60adfe5b203879c62ce01523fa7fc52ecedbfb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMEM2564248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580ca88002396e809baa6da0cf1e9ad5a79401e655dc5ac320a59bc6c3b1699d. 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/QZMEM2564249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb414c52597c34af2222f7b17b31947c074ef9811bc35d6748e8f83dbebfb033d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMEM2564250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1222ff28147824e4bb434207698c144dbc7b9370811290ce6c1bd5da2ed21e79. 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/QZMEM2564251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa77ac1419a3068bf09607a72c837417a0c80218e521af96fbbd5b8884a8ab60. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZMEM2564252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f464cfc906efbd3426a25f577834b19cdedaaa25f9943a61c2f5c2d773c053. 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/QZMEM2564253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9704e06db97870b674e18638a5f0057abfc7ba9bced022d9e5cda69e2a4dbdd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:50Z), 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/QZMEM2564254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56f51b12f16fdcb82945056b54bfe1981e43f3e2bc725e9bdaa580c8f5a12ee. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZMEM2564256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1cecbd5a3fbdc88350711b0a3b4dde5787a05d8cae1beaec206304ba3aa2a8. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZWFM2560365.