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 0x7b2ee3a9512a4cc59a78e880d673853b293b559feae647d1757167db57c3c46e. 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/1660ff1f-50fc-4c5c-9097-2050c43ede80.json and https://artists.proofprofile.net/proofs/artist/1660ff1f-50fc-4c5c-9097-2050c43ede80.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 0x783031151adc1bad52c9698540a67d43bdae40ed341f29a4b6abe7215b729af3. 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/QMDA61549116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4d95ef5f588578f532cd493784d76995da323e1912e3748b28ce6d99ee44a2. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QMDA61549117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0b639c2756911b0f189e16cded02b2fe2a4c018ef72ecf85ad657276ec340f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMDA61549124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978addc84561f417fbe92b902d0bf38b425109c8cfe624e1bb970a8ca3906828. 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/QMDA61549125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fbbaa37817cda9c13e16af1d6fafb93de6f1049aa324e865396a901450622a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMDA61549126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834e233d388643ff5ad9318681fc5008fe511d8fd6572756c8bcf5c955647f8e. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QMDA61549127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4813cc296ea408c40254b9283cf886d6f825f6eaf84a42e1b5490c62d89a0d4c. 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/QMDA71529301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b1bc72ac43474fd613a05adea6d1737810fa34064f5bb74aa84bc5d0cc712f. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QMDA71529302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af660d1a455aa21d80d44b83037bd39c9f120322b866a6ad1a348c8e6c26c4e. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:55:58Z), 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/QMDA71529307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d061e0d30b92237b48baac41dbf81edb331add727794379f0fe6f2668fc34a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMDA71529309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af0650583fa8fae10e69f7b47af7fd3962d9a4f2a036ef5dd2062978ce269a7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMDA71529310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5997830c5d2240dfb7cc82f5bfe47e8200790ef81a071bd8fc854491aad450. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:01:37Z), 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/QMDA61580281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2bd98a3bca453accd81e3537e98471c2e0da3a28e1574e9ef8d42254f822b2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMDA61580282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f302f5b3f3f8e15d1a2f41e63656e7d0f712173c73d94f79cae1d5ce3900cf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMDA61580283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681559896aa7312b26ba6119c5408f42d4d70b69ac9547ffb7e9f186ba6a4932. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:32Z), 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/QMDA61580285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd188a8fc75981a286f67582cdcfaaf841cd59aecfa2e3c0fe20c4565cdcf66. 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/QMDA61580286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10af7491d4973e96e6e7af1bd016b972a5aa4a2d3794191f5ddf28394510706. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMDA61580287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3847f10ce9dba6b47672f1b8c19eaa556bfd55060c207900b6edd9e46b205bae. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:22:14Z), 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/QMDA61580288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf255f8bb1455877aebd969929852e32b3818101cbfc22fbebefa213193493a7c. 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/QMDA61580289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d83369c39453905191e160c21fe062f3b1dec819c1bdc5ffc9589cd3fe8884. 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/QMDA61580290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f7ee9e47ad1f762cb7be98b162af1e36b3272445be39db79bfaee2b30eb136. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMDA61579717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64b4babd8395726f7a88be7c393de072a528df22d4a32d462b56dd4f006a817. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:01:33Z), 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/QMDA61579718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347b06fbc38e82050b1c6554e6bb2149b035c90e91a157f42035f33aaaf2a444. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:19:31Z), 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/QMDA61579719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070e498e4641489414aa6229af891cc2baa37859ec136134bbe0914e995e3271. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:24:55Z), 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/QMDA61579720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9934212706f2d20fc6c6979c48380f707bee1ae6a6b92cebc6b201f0025f1b0d. 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/QMDA61579721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a831a25af08233ea4369103816c28a23f4426c3c571c76376712d0427e8b743. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QMDA61579722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e76fb298582d9a9923efa450fb9668decc852e3348d6aea3f6bb70b081cb367. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMDA61579726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6003fddf09214b8205e157d265f7e3b0da8435a4b7f8907290d12fc01f9671. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/QMDA61580265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c4eb768be04286bd9a40a70e8e6eda431465fc66eb9d684b15d225fbb31529. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMDA61580266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d758ab69731b48b7400ed91d2f146009d870dc0b841700be4755ba8fbdf5622. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMDA61580270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddf290fbd18969af5e861568d79d598d3b0ca21ea160bea98d1127276c185f0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMDA61580273.