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 0x7249338b1825bb54bef415b179f1841ae09746af80f48adf2a3006078ab9d4a1. 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/99ce1a1b-8293-450a-867a-932a6d389f82.json and https://artists.proofprofile.net/proofs/artist/99ce1a1b-8293-450a-867a-932a6d389f82.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 0x65011c435aac69515774036e340db44e597845569975d9f419bc1cd8d0342160. 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/RUA1H2193473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5775de8358c11df0ec8fcb27fcd2f1b7445cbf14db57692102fc6d768135c07. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/RUA1H2193474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b215d3843795f908679e469168f78e883527a3bc5ac5231b364769e035dd5c3. 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/AEA0Q2186159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3866095be321b47aeb8e1fee3940679930a8648724d4e9e757b642941e7b0137. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/AEA0D2183031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885ca8531200b0571c891c437497b5399ab786bf9372488ff9dfff806fd851a6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AEA0D2183033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf204cabec18e92e6ffd6ba0aac0c5c485d847cc2a47e3bef847a3a24cfb20fab. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/AEA0D2183034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ae87da9c45ca1490d258f991d7f635e5c0be6906b690366ea1598b6111cc40. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AEA0D2183035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aeb93eaad2952ede261150d7351ac4f436534c4aecb2831ab30de17661a595b. 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/AEA0D2183036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f7eff76a97d24f46259571e1f292fbabd292c9fb53930130dd2b0d3d821d70. 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/AEA0D2183037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7352a997046630ad8a7d21b30ea2cc19aa3ce71183ff303efbce1766fa0ceb. 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/AEA0D2278373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791e6e96071168c3db22a554c997c4da6e2356eef51936ef9dbb7f5b7a2220e3. 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/AEA0D2278375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979ab610a7b1edbb0f5ccf9043565f8314423bb03dee133bd174067dc409ff7d. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/AEA0D2278376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a22ac630be2917cbcde30ce4d4e1aac6371eac0628bcb512b9cca64cb790e64. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AEA0D2278377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe20631a4dfcac1d1dc75c8f6d73f35df4cd45f3210b7f2c63f646053a08a02. 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/AEA0D2278378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2db2136a9098c875331e341a3d9de74b0e29189fb31674341a00f7ceb7dfe72. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/AEA2L2342465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2970e48c4b0c54e2ece414d1c99aeda1084ea5492c6690e573a52d6d8c0c0e82. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AEA2L2342466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1100715d76ba37ad8ea4bafe3005bf94e213fa435447806a25b74562c193ed5f. 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/AEA2L2342467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd987e28ba886f9934dbeeb3a1f75031c9770c57f0e2d4d6caab20b2f13da372b. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/AEA2L2342469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8868f0747fe69f0e17cbb1b3445efcd8d0f9794d78b4e63b1ab8cbfd9167479a. 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/AEA2L2342470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae13847dc52383f2b042f0e8872e6039dac1871bedf71e160b2f52dd0739b11. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AEA2L2342471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd596e0d42664f037925c3d99f562157f0758d5d37353dafdbb808fd8924939. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/AEA0Q2499230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad96fd287740e5aecaab6118f3500e90e48a943c8331a0a91d31067088547a8b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:56:29Z), 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/AEA0Q2499231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2638d8372321f66873ef59bcdb645056b69591371ba455221bcb0b06ab33318d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:51:17Z), 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/AEA0Q2499232.