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 0x33d1ff8bf0f181a1da951502a789a745e187db174ee83838f0baccffb98a98fe. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63ab12b9-6e5f-48b2-9bdb-e68f529a225d.json and https://artists.proofprofile.net/proofs/artist/63ab12b9-6e5f-48b2-9bdb-e68f529a225d.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 0x442404ffc9965aeabe31b6fd0ce6b48700549af8bab67db75fa48a84ab7cde6d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/CH7811816271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a0dbd31653f148eef3b8d0b9be97d88db799815d39334c88a97ff4e4b690fd. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CH7811816983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ef82d3fffb8badae7830b424576db254a4c11f1e7f3ba03db67674c1b3f601. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/CH7811818568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90954135cb5a6a55889fc918ed89d6bf487eb2fa338e5e955bae1c7703b57f8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CH7811819792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4510466e7f4430228c426f66d450cb9ce30585862a7354271bf3ac52353d688. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH0011900161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9b8aa9f005fd90d610c5bdd4a0f6b0ff5645db584f419b083534e840fa855a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:52:32Z), 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/CH0011900163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900c68682f03b47ca271669359fcbfc1ffbfa35a395b31f7b16d6be4efed9d7d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/CH0012000044.
Ungerwäx (feat. Chico Chicago & The Youngest)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4c284a2a63f973ce183baafc42fd6b149c5f02a8ea8b72247a7f2a0e426798. 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/CH0012100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e6c7c14f1c08ceb1a1a7ad20fe214d40f116ea9070802d564863d974f87a1c. 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/CH0012100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb708984960a8e14a2f97c4efa78cb854127ddb421aa4344e13a10c2623db7de3. 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/CH0012100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0f85366446e3a8d2604819e3c50c59810eeeac7eafa6b5b2058178776f70fa. 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/CH0012100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b45c5b83b2ee2a9e523c4eba65e6ac1b180a958d82532f870889a4df9e617b8. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:06:08Z), 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/CH0012100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58e8ce45aae3d89e3c282810a1fec562a0c8354ebdeced9a4ccbe7f3bbf8ea9. 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/CH7812223591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e42637b34476c1459b2cd12c1244b0b971cc937b316088fb2b5b613ce86d3e. 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/CH7812228745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b44f1bd74781dde29c3f22805b238274fb6378789db8f209b2d836024daedd. 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/CH7812241247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac5c43fd1f1ab1bc2e250ea18f97e4493c8df7ac5602f33be45617741596417. 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/CH7812354534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c5984e7ede82c6c4d176ef843c2c8f00a80bae0444a51f05143a9ac802f3c8. 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/CH7812412280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58e8ce45aae3d89e3c282810a1fec562a0c8354ebdeced9a4ccbe7f3bbf8ea9. 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/CH7812223591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fffeebe1f99a988dc5d6c709da1cc3a5b99c4a710206dda0f2e94d829184d04. 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/CH7812407869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69a4bbebb72eb78127044047264abd6629dc78e1982e904cc771a902657a9fa. 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/CH7812412282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120d50b0a06ded1114f5627cc74111a925c0d092f450b1051639d4f2f055a9f1. 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/CH7812411108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df12419a7d5307516e94349b08df3779450fba1d649156621a55f7d005d96dd. 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/CH7812412283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66b0d60b73fe0a54d3e4ae717ba56a31af671f3a4cc00c6a0fe7a65b2c1c11d. 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/CH7812412286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e18ccc25ce157937fffab70a8ed08808ea8be8ae74464e5fc8606a31058086. 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/DGA052264107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5299462cdd42ddabeae8ba6f0c53b90b0db0680ba2a26f345ea9fe97d44cf2. 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/CH7812406491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0451a1c8e4ffee1b2a6e6d3340125ac7dba29ae97d24ee87e2c2e5248233a43e. 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/CH7812412289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e42637b34476c1459b2cd12c1244b0b971cc937b316088fb2b5b613ce86d3e. 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/CH7812228745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0797e5b4108dfdcfacba1d36cdc60d3b5a8e8d96612c7f3ea206a4a6bdbd66. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CH7812425699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf489d16b2cb6f72106a99a076894b03a5df5d04292e545c2d96c795cf720386. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:09:11Z), 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/CH7812530949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d08f6140005e4057de14da0f54b0956b040c3deb7f87d5646ffc4fd560dec90. 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/CH7812529990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8811314cd3e6c0ff52c782b2fb4abbd3234dd4a08c9f00caf5194edb90e6f6cf. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/CH7812533287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2483cccf2c756804d1628e04a2097686b1a1945b03bb5be5593975d0a1d0a215. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/CH7812545216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6063e228fb6a343c15eb170201b7a17c80507e7ec16e236a0d9849768d6cdb59. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:01:15Z), 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/CH7812551110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d311039105a28285666616759cd7ea55c8f98f0f8bc5bb09dc318c530b9c021. 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/CH0012000034.