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 0x8366f78a904b603dc238188ef5e28868f5bfe2d952700c8180b0a467650f3148. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01b98bcd-11d7-400d-8bf8-56acf7086774.json and https://artists.proofprofile.net/proofs/artist/01b98bcd-11d7-400d-8bf8-56acf7086774.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 0x82cde47d27fc3d6a381be6cfdca9c2c16e16b89ada4709a59189cbbff8ad8078. 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/GBMA22512816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35759ee0ea696a865c2b3cd511f9be52fb784586ad50c6975d23f5754370e4af. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:47Z), 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/GX53U2530218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126111b60c72578c4a0be7de63c312c645fb461212557b7012cf1ce74162c357. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:31Z), 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/GX53U2530220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb529f3bd4dcd28932569e7fe59db405d17b432e9483c630348393bcb2cb0bc61. 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/GX53U2549841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e325bf93aa217d55cfb474ed3e135624fa02b05196dc05ff3659b6fc2ab5460. 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/GX53U2549851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1964778bb69f6b0d5b79c83f8ad5a6d800e7322b81a820e0af79411d8c5e20. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:53Z), 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/GX53U2566743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf783188a45f087f9aee83904dcdf93d31e1d17de8ce7608c5e73b68155aaac1a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GX53U2566771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7863faa9ba44c7a55055f2a8235281661cabaa1e08c47dd245cb2e5618f3abaf. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:39:19Z), 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/GX53U2566778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b58be20578f0f9223e7f29461e9aa84b9f9599fd40208eaf78e38ef1a0aeb68. 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/GX53U2597970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e03a745523ac7d733188f0312adea4936e9b3cb4a87a29d4e2cbf72e7fb88b. 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/GX53U2598234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfeb5ecaecd3828b3431f2d9b9848c0839c26012029549c45b74d2e2f5f293d. 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/GX53U2598237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760771d7013387af561f2e983d92eb354e79bd92f273c26dadd1a8c33a48510b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:30Z), 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/GXH2J2577728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc035fb15cc27e6c0746523a693274d3c77b6148b6ce6c775c74273007d4b428a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:58:03Z), 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/GXH2J2577904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98dedf476ca4784f8d998c7e2ad5422fbf8e05a8f3d602db708f73594dc4d73. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXH2J2577869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a5b77db21d63ffb12a9766b1e231eb410f5424de97f8ad7115c167650d39f7. 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/GXHAF2508551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee0edea4760eff3b58d2f98bdf15215d9c1a98faee78f7e9234fdf276024799. 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/GXHAF2508558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe416f220e0a02a6847cc37f036f1ccbc2e263ae2bd09d58e36b33a662b76600. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GXHAF2522537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c146951747861a4d20d57f0aac5d95f1c39027256b7287b748d8c1ec3088612. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:55:32Z), 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/GXHAF2524525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90c6fd002fe71bad051ca7fcc93740b2bb528eda19882bc56c2c42c86f1b692. 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/GXHAF2541464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784b7b7edcc88b879aaf41029606c429d0af5f4af0e269f9e7e8d5c32d828026. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GXHAF2541457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d4b9c1d3394a1801852d351283c37ab2c3089e1d5ba7157f05999ef96b32f1. 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/GXHAF2577375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c463b02b4c83de04e51c01ae8a9879dc63fb0786cf2fadc1327aa65b60177f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GXHAF2577377.