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 0x7d04c67a5dc8c973d4c4ae5f2c1264ae331ea19210dbd00cd6ca4fa1bf8d56b3. 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/cef30fdb-a837-43e6-a70b-be215bc177cd.json and https://artists.proofprofile.net/proofs/artist/cef30fdb-a837-43e6-a70b-be215bc177cd.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 0x2eab88c9d9a3579e455a958b04eac525ae2938743b5ae2516da375407f4b2db7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GRSTY2500805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352b77b9a8b66ccb74c18bafa9f3ad1d1618bc0d3804a33e163dbc40a9d9967b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GRSTY2500807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7521e248e4a2ed7938eb045e14ad792274c7bbdc264c1e797cd3a3ac527fe0. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:34:13Z), 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/GRSTY2500811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87534ba5f5742600986689ae5130815d63eacff43e647174d150f17fcbf804ef. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM7281963442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd157fa92345e0357f15b458a5ff5bbc9a06d78781b1097fbcdba649bd5aced26. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:09:59Z), 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/QM7281963372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420baf6d6e25d25e969fde3c78a61d84f87378e1f7a9354783a39d79b64f0efd. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QM7281963373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8e24387997a764c7dc2b0b3f0a38ed1a2c203224aebfd04b1160e64c1b3da3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM7281963375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bccd20cf6685d14ffbb14d9f5002adff45fb9234085a09f4a945cd7f02d7097. 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/QM7281963376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27661b6538870e64f7d78881d80e1985d9ddc92281bee7153d490e3aa904c83c. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:37:20Z), 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/QM7281963377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb630ac4a8238cc6989cd2b060ac46b2df01461978c220012336ce09d39569f8c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QM7281963378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1031c986a57d0a28a5b463b98fbd50c7eb48afbd78a2fa94d4a0e43aca1267f4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM7281963379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3ab518fd87bc3e1cad3a6696d474446bc744e548257598be3730bd29092f47. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QM7281963380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0216adf2a1b8910c60a15c543811d1a93acc2fbb84cb8eb4e15fdfca86155a4c. 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/QM7281963383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d98a11a51c12b65a6812870aa1955d7c6eee7c2dcc08cd15cd33300b19aaa70. 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/QM6N22071001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133c8db2c6aec0e1cb801d7947180e4adc613b8d8ef4924f0a3f0a891eb8dbae. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:16:36Z), 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/QM6N22071002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d0d7eb0516b3fc5800715ac72a852c25d818187a3b412d953ecf55edcb9488. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6N22071003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aca3d4f23f86b1f7127572b025d858cc42a5451d1221234d99f3bbed71cdcc. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6N22071004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf0f756e4b06322119db6886fddc438d2d26df1240ddd45b6bdb6fcd77c05d5. 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/QM6N22071005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248b243a8e826dbe1dac6379ee014c05a590012648995b254557a05cd19ec02c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:51:53Z), 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/QM6N22071006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c89f889b823f1c8994f53d34a09a765c17233c85dce566fad8f7deb10056aa2. 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/GRSTY2100375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6940e5b2e52d15dd054fc628a50c01176fb2976011882aba0ca493df799e8c2b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GRSTY2302537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5e1ecb05a88872419bdfaa974412ffec91a773c01f129aba417bd5f4cafd07. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:24:58Z), 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/GRSTY2302538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86749fe33dbc0638f0255fcfaffb737bfc2e7537a5b9aae5ca226fc84a6f954. 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/GRSTY2302539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef0a74e7717e31aacdc440a5a4d3e9c6086e541c48ded07b2fc437c53692db3. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:58:03Z), 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/GRSTY2302540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8267eaeaaa742fe91d17be9fe8d33154f11f03fa031afc35d1a78583c0bce5. 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/GRSTY2302541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9b7732c0938b2768235e939a7c0a434d6db0c6fe6f6ce44e5463619cd07d25. 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/GRSTY2302542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640bdd293d9aea3036cd8c4b740584811ec4e4dd2c606be733be07c27ac6a2bd. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GRSTY2302543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d3509bc00c869a80dd397352a95b7f9072b1bf6fd5b694fb48d9abf6436987. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GRSTY2302544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe77a301f3d893851db5cd717243e34b23c14abd2946dba4148d3b105b2f6416. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GRSTY2302545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f154e99df9b638f9a2f2548ee71340200ba978a36dc03aa7786b05d034d19b8. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GRSTY2302546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4730d04c127fa060211df60d3488defce6925716fa23ef6a66d4e4dc98b99e8a. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/GRSTY2400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd03022da9a843ce034f29017b295b516af200e8ebba49cf68361f11dd99d15. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:54:07Z), 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/GRSTY2403186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762811caaeffe7fa3e0a17072c860499b09fc371169b7100bc6d65c0e6c29c02. 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/GRSTY2403188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebde9a4e1e44932c1eded590942ca8d5b753fc32cfffd6e2dd4febd07a9511b. 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/GRPA12300258.