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 0x3e9dc5ea0f9c977c0d4b2c9a36b479287738519b882b6e611ab1dfa6fc0e9c3d. 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/254fcfb9-6b21-4b0f-94b2-252e5c016d57.json and https://artists.proofprofile.net/proofs/artist/254fcfb9-6b21-4b0f-94b2-252e5c016d57.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 0x6e218712788713186caeba5c26269a2c86aa5cf9ad5b95d481e59debc33b7b1d. 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/USAT21801057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ae5e8d81a8fbc6f7c3779241fd436680fb5cc7777d35d410e9bca7b8318c60. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USAT21801058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7504a6de52c8025b51a2573819739b3549e809b8e4230a73af923ee3522a4a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USAT21801059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9060af620e10dcb142d3e601033a6efd03dc966f4c8f4b9e34013d4f0ecf433e. 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/USAT21801060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20495b05c3c63c395b6159a7a325e3561fd05196eff44b30aea296ebda7338b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USAT21811606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc136f1384146fec55a7c1c5205ed343f09fc24a0896912219c4768ba0f222628. 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/USAT21811914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb57a67328bc994821a9a583eb158664a0e5f63694f65edd14a3483e7abb74b3. 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/USAT21903176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2705fe68bdd94437d9c44244c421462fec36ecc222eff127cac82e883da3efb. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USAT21901915.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24b83a46e7ab10c10baccdde295bf26b51378361181302304252cb642a382e8. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USAT21904235.
Late Teens / Early Twenties… Stay The Way I Left You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3613e13004b7e409c09edd2a4ece2ade7e60dd96794f4eaf205a8379dff2bb. 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/USAT21903051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9103ae37dfedcd3b82809bc15f36b14ddb8215bd48c5a60f02e84e7c03d01892. 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/USAT21907386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a184fdf03cc835f0f845e77305cb6c34c0aca22df3da5a3658e9bee6cb9e306. 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/USAT22002496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2795a8ad1d85e12958a6ce7802a39d360005b293d2dc4d006bc94ec7cf0cc38e. 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/USAT22006636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d2ea40b918838f56d504d74a658ed3c4950a04929eb0b22038a253f3cb1e6d. 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/QZK6K2172891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd43fa9027a0ec4e964b8355d896f32a338829f3828318bfa0e2312a7040c438. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZRP52106618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8629a50e8cf98bfe314d5ff4628a5bb834a402d087d5a1d829ad9dc0f7ce351b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDA72268677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e1176e53d3d07d7f57cf47cc1f3f0e88a9b6b89c61a246d12433fef3a085e6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN62229538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c60713a849b3761decfe5f7e57853233da6d2061b5c1345031db3038697dbc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:29:47Z), 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/QZNWQ2265580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02813614a1e22887bcc15c8f4d3d95b2413f33abe59342b1a1d26667b039573. 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/QZK6G2330817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661d5df8543b4942c78467e42b5ff1034bb2839b85720e7d52fdd86beb196dc2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZTB82438242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1d08a634d10f790eddbb16a15e5d4f1ca016dd3ea4e1b31f3eff1be29c3cfa. 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/GBAYE1800729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d1c45ccbcbcd462bb75879a201b6b6fb57bc2a7df132e965b7b9c978b74b18. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/CA5KR2130751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f4ed745878f13824578030b36de6e3dcb381c0b0a3cfec94d99f4bcb09834f. 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/CA5KR2144271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d1c45ccbcbcd462bb75879a201b6b6fb57bc2a7df132e965b7b9c978b74b18. 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/CA5KR2130751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f4ed745878f13824578030b36de6e3dcb381c0b0a3cfec94d99f4bcb09834f. 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/CA5KR2144271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f4ed745878f13824578030b36de6e3dcb381c0b0a3cfec94d99f4bcb09834f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2144271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d1c45ccbcbcd462bb75879a201b6b6fb57bc2a7df132e965b7b9c978b74b18. 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/CA5KR2130751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d1c45ccbcbcd462bb75879a201b6b6fb57bc2a7df132e965b7b9c978b74b18. 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/CA5KR2130751.