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 0x02639756c4472c049b7cdb3cf3010fc1739b6fd6e6fdb66d4e8a1ae403f4bf27. 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/ad665846-25d3-4359-9fac-1ea7f732c823.json and https://artists.proofprofile.net/proofs/artist/ad665846-25d3-4359-9fac-1ea7f732c823.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 0x2976e48fddc98f509d9d7b71838d93351831fc6bd7240a7a39532b8330ddb35e. 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/GX53U2033825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc84cd29fa8ab8b7fca8d643c15d3dd9943d3ac3c6e969beef75496e65dee66. 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/QZZ7L2488379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb4d6d97c1a009e94b5f294d6e4bae200c01bd8f820f9a68536862178ac4ed7. 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/QZWFG2403199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329b11f66ec9dbc2faf80546e523b67e1b9e5fa3a24026e7cd38d9cdb13b0ece. 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/QZZ7L2488381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c6e9d6a402a5ce17ec517d33664dd953bc9f5ff2ce4dd44e0877c12cdfb1e9. 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/QZWFH2438617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e162a9aef58ee595f3973b29918458fcf37693d67bcf9faa1c9cbbd05b6736c. 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/QZWFX2461882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136f267ccb5fe2e3697829d0b2388944e2752502dc652047dcef3d18394be56b. 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/QZZ7L2410677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ada66e4b2df928d9a82aba8baa22a294f7ca729b1db5cabb6306e8e0a17790. 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/QZK6Q2082306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cdd1d53acc5b8318605cd2dea35d31ae349016ad21003e6e1d940464a15e33. 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/QZK6Q2082313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd170e2443d71c52eb3d51306fc7345c947e5708aff6c6be67fa984166bfcb8e. 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/UKXN22557042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b409df0a718c4f8dacc95a76b1406207752222e08cdec06ba5a265eaf248710. 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/GXF9Q2591408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bbfefb8018eefc1db167ea6cebb4d734fd7c9e491e40b995f3928ca499dd74. 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/QT3EZ2442046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd68456ce327da5996572a44e52ec74973baffd5c367273ac3ba3e8df7454db1. 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/GX53U2470783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3f11ca1e6876c26bbddf66316a617c2ddf3ce5f05fe2ea7a1557c6c1a06134. 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/GX53U2318613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1502abc95d4044a680164c88a134a6ddc5b8d0addb216c12fc1e5c9ece8eaa. 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/GBMA22308816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697f07687798e9456bf28ab781fb149d12b5dfd26cca2ac731f397d7f0f95337. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GX3Q92387059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90335a488c3105f6b597c50da6b4c854b706aff3937625b28c1f88f7e23661b. 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/FR96X2120711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f49fba05f8aa6fdf5461e5540c7579aa55f4e202ca2064ca7536cd0aad15cf. 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/QZHN42078453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3848c235305b8b5fd9a72d1bec17bc45a9220bbad2793ebb6251a9a9f887f59. 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/FR10S1999256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdefae680ce71a2c55264577038fd887863921580e802a8720df6c4f41effae. 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/QZK6L2468936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b8879aaf74147a07653ce80bc80e60c05a34655b64cc03f2e707faad5b4f87. 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/QZMEN2457648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378f5e99efb2feeab447f6c512db7ff77929f0830a65a9e25a86af0aaaa8ce74. 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/QZMEM2489857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54380c047a9e2ad6c4517c0c93e82a4d37a3f6317a702a046d09ed73a64e0291. 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/QZK6K2478671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec532f7d58f84f6dd60d64c5467e51471fff76b551eda5f970677699dafe8a0. 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/QZMEN2445568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3603ad1ec3ae8ab5f29d7a39312d8e669dff7638cf1240a4e0237f33d319fb8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMEN2450374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0817088b596464fe8c23d59116cf43a1e2da371cca41604fe5931c12a92022f. 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/QZMEN2450441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefe9326ec563557c28aeec4af01b82be3874d7a048a0105c58915fd850078fe. 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/QZNWX2129034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9069c0574ce22ed66b76ce889fbb6dfce9d92251eb36e37615a21b8268e76e. 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/UKXN22562420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b20da4029c287ce4dc3b7dc554931ff71af4c76363fff8ced2bdac3553e9b2d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKXN22557184.