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 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 0x04af4d2fae86bb6db6403e065a522853e1391a3097af4c7e237d146aa28e8827. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a83926e5-2d73-4777-aa13-fd67833a6313.json and https://artists.proofprofile.net/proofs/artist/a83926e5-2d73-4777-aa13-fd67833a6313.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Carlton: Lily Of Laguna (Carlton Football Club Song)
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 0x37df3d05a3893642dbb0b92e85898fc9f4549fc32fcc23ae79b1a2a623222664. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB42400025 — a six-check JSON result.
Collingwood: Goodbye Dolly Gordon Gray (Collingwood Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517eb0443ea6bc40fe6f9a41f38d48a33ac9728846aa990646705fbff540eb67. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB42400026 — a six-check JSON result.
Fitzroy: La Marsellaise (Fitzroy Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8ebbbf7d0905b87fe660c9a1e121b06716092bdc8fb8dcc05f8d689134ad0b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB42400028 — a six-check JSON result.
Footscray: Sons Of TheSea (Footscray Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce66c470aa6eff42d9072279f02796923449cc5fc67bf2f3132ef33249d7aa24. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB42400029 — a six-check JSON result.
Geelong: Carmen (Geelong Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9f46a29c9f096d63730862331af844eb8a6c789dd04a70b1d08c807df3f0d6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB42400030 — a six-check JSON result.
Hawthorn: Yankee Doodle Dandy (Hawthorn Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0aaea5023f36764204d8de725bbfebdc5418fbb6950f7286770c98e71162bd6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB42400031 — a six-check JSON result.
Melbourne: It's A Grand Old Flag (Melbourne Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7d2b1fa0aa08c6c7f58d1f83af762323cf141f1a6224164adcab99c382ce54. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB42400032 — a six-check JSON result.
North Melbourne: A Wee Doch And Doris (North Melbourne Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0a8fc38f47aaf7233fa1b6f3020de857bba387b49627686ee56ce4bb8bad27. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB42400033 — a six-check JSON result.
Richmond: Row, Row, Row (Richmond Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50f7dfd43ca4744a4eb45a1acb59e60817534459af97a5d5fc677857a7170a3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB42400034 — a six-check JSON result.
St Kilda: When The Saints Go Marching In (St Kilda Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ba452f3db1a9ec2fd9fa4d7d47d0f42d5277a1faf008361815cec9f845aed6. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB42400035 — a six-check JSON result.
Adelaide Crows: Pride Of South Australia (Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326ee34ef38e8bb86d53d6ceb5c5b097d7d7d2f924e25b40647290f37096cc32. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700216 — a six-check JSON result.
Brisbane Lions: La Marseillaise (Brisbane Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197e2c8a1ce3a93250d816195f88da5e3a4abab250063a86d8961e9a2c74d7c2. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700217 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d70df6216bdb9deb0e293a282256937e3cd514537cc98a488214331d7214a78. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700218 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48face311e87a2238e121e1690750f0d071caa6dbdf72c243a58be9202cf3fc0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700219 — a six-check JSON result.
Fremantle Dockers: Dockers Anthem (Fremantle Dockers Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3902fc5fbc7deb33352d5ffd3ba82f42810196fccedc3a3eed7a2fa91352b24. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700221 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f822ea2c0fe3c4624c9f9660608a5c82c3aba7f1907fbcdf2e674eb4ca7ae59. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700222 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6916f7893af90c23fcff71bec2a3d7d40db37decac2031a2cd0c30013b2f84e4. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700223 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fea6ca47a7ff4de302fb91499820fd97e66b5caccb39f21d794006530863a1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700224 — a six-check JSON result.
Port Adelaide: The Power To Win (Port Adelaide Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d6ef423f56c545d78fe768ab4ffa27d84d1b9c903867591af72ac2e38d95b2. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700226 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940f2ac32db6e802d7fa95f33c5040ca019cbba5d29db683156cfc145d3396bc. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700227 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267f08cf060e643d74a9f7116b6a61925abc17bb542aa19b1f7456f73f4cba86. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700228 — a six-check JSON result.
Sydney Swans: Notre Dame March (Sydney Swans Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd587287d3a11f12805bccd8ccbfd9bd8278727357f7ac0ea10546201655d4ca3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700229 — a six-check JSON result.
West Coast Eagles: We're Flying High (West Coast Eagles Football Club Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7924ea70b6305f00b7748afdd6cde152f819214fdcff37531abaa507c3de205. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AULB41700230 — a six-check JSON result.