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 0x3aeab35e16da928d195e790bfb7abd038bb5b02dc5fe2cd1bcd5b62066ab820f. 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/ac0f3485-6c27-4622-91a2-7a405d2e1fa4.json and https://artists.proofprofile.net/proofs/artist/ac0f3485-6c27-4622-91a2-7a405d2e1fa4.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 0xa5abca28326cb40168a824d08ef0d2b9b44dad433d61e7775fc9d7407ec48d45. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEYO62200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a70238f4f3533ef19dee3ea029f955853e93a2d0c14583059da02068837be67. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DEYO62200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be363632913f55bde744c020ab4b0b5e9ed469c90b6778e73f20db3da914b11. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/DEYO62200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6433b5b80306c6ffedfacc4d4cd8b74399a366a642152d767bdfd4146dfa07d3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEYO62200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3f7c43b38e7b9288716ff493edb1289a99bfa80cb91b47b1a336eab93f736f. 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/DEYO62200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bdfb16733dcd6c2312658f229cde82fbaec2b3e8626ae64ba4d39745479fc5. 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/DEYO62200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efb3bbebe6a46ac7f7a06a8d849edca9b78fe502dfa6f7f666c6621a8d4707b. 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/DED831801746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ac1a9dc153cdbb885be9419d29821050e033135fd5adfaf69f47227cd60981. 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/DED831801747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef784d009b365a332a9d659d7809ade45809b58b8a69af3da1b32186f1929b4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DED831801748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444a1fbfbf39d8110d466bf089265565e97b97c816d55c664db002e20b9d1082. 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/DED831801749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100c2e1fbd94afe792a813bf5d9e806abd4abeda81224f40b6a8512ca6c49e40. 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/DED831801750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c30c97ea45269272ba15d0817c628d6c0e68d39f47411c9f057ab93d023cfb5. 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/DED831801752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709394aa7423aea9f2cbdda0984c595a490ea516a8181d61299b6423fd67198d. 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/QM7281766180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc185fdb6773f4a61bafb473ece35264a6605bd365dfd58c2033306a861794772. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DED831801754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fec0a9ed6559303668bd59b64e0f40ddff2be2378ccea9a8178d1f27db42bd. 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/DED831801755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1989f793e6c87d85fa0216509a4db70e0b76b5e7393ce9887689d63fbfb1b652. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DED831801756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ab546c9377f865d47d4b167aac43f4c4398e3c5822e6418c2c48f1ccf74951. 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/USERN1009299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757b648b96e1ee4e5ca3b4605cded8959b7d2202ead02a414c1db854dc5fa6b4. 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/USERN1009300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcbd5e159a9b8914b9a520e61da348d0389fadd23f065d2b219d774a93f8488. 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/USERN1009301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e16f9565401385f48fd3e7142ccbadb1b655f49d4fc01802813feb3522ca99e. 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/USERN1009302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7758c684bc409f0124416740f85cd595716c085e3844d3f758c89125224d4e8c. 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/USERN1009303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf850c5451ce746e73bf98abc9a835c97e18723a46d8a44aa73f5c3c5ae03af8a. 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/USERN1009305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70795dd25819c2d25f4333202e46543c1674a1977f630dacb9a2dc19d672f299. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USERN1009306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba8252beb859bf42b6e88bce6912511eb86f429896a5ee95fb5affe6616b6ae. 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/USERN1009308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcf3d733514b8f56556c5cba468dfea663cd3cac41e11f50895acb7dcd7d638. 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/USERN1009309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d81c6f07e1413a16412e93cf44c84c4196d1987bfba6d185ec1bb6ae3894409. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBNSF1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511f88f2c46aa70740d1d88fbd1f5c22ed55bfe23b9fe54326faa59b63f4636b. 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/GBNSF1400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cda1f9d7038d2e8a74604220b077b254ba074cc08df59dc8c0585c9183076d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBNSF1400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb7bc06b9172776d35adcd33fd1d79bb5ae978fd9aaaa004f223fd47bf9e961. 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/GBNSF1400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefb7a1f1501611d0831d9eac7d4c36b30afe3947e262e79ae3a39c53fc9c611. 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/GBNSF1400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba4147c9296e2b2a2c3098ce87a10fc8acce12c51c7af4633f8d35a95bcab2f. 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/GBNSF1400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1aaccd5f803bfb9e456d28f7574af9dfea88f343ccef315a5fffcfb3dec0ab. 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/GBRDV1200221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083ffb2b9337b8a176248684324f9cbd87ccd5101f290dccb6c8766834be4155. 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/GBRDV1200223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c63bb6a9490d6c33db2c98b58f6772466b420a8899b47261eba5295fa864738. 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/GBRDV1200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c12d5583b4a57be3097e066b379216b8e8b1294842134558ce5e82e9552299. 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/GBRDV1200226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401a750fdf9b91621a8ab5a75b7a932bf19f174f571064430cce78a5d6372ed6. 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/GBRDV1200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1695f88de04794a7ce674b421733a2ce1f5403818c2b956ffc1bbde6a719bf. 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/GBRDV1200229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b720795fa478b2b6aab926d8a0fba50642f76fb1165a6dfad8f51d022bdca4. 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/DEYO62400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a70238f4f3533ef19dee3ea029f955853e93a2d0c14583059da02068837be67. 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/DEYO62200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3f7c43b38e7b9288716ff493edb1289a99bfa80cb91b47b1a336eab93f736f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEYO62200020.